Grinding Tool Device, Grinding Means, and Grinding Tool System

Abstract

An abrasion plate includes at least one backing unit including one of a support pad and a support plate. At least one fastening unit is configured to detachably fasten at least one abrasive selected from the group consisting of an abrasive paper and an abrasive fleece, to the at least one backing unit. The abrasion plate further includes at least one backing element on which the abrasive is arranged via the fastening unit when the abrasive is detachably fastened to the at least one fastening unit. The at least one backing element is made from a material having a melting temperature of more than 160° C.

Claims

1. An abrasion plate, comprising: at least one backing unit including one of a support pad and a support plate, at least one fastening unit configured to detachably fasten at least one abrasive selected from the group consisting of an abrasive paper, and an abrasive fleece, to the at least one backing unit, and at least one backing element on which the abrasive is arranged via the fastening unit when the at least one abrasive is detachably fastened to the at least one fastening unit, wherein the at least one backing element is made from a material having a melting temperature of more than 160° C.

2. The abrasion plate as claimed in claim 1, wherein the at least one fastening unit comprises at least one fastening element configured to fasten the at least one abrasive to the at least one backing element, that is made from a material having a melting temperature of more than 160° C.

3. The abrasion plate as claimed in claim 1, wherein the at least one fastening unit comprises at least one adhesive element that is designed to replaceably fasten the at least one fastening element of the at least one fastening unit that is realized as a hook-and-loop fastening, to the at least one backing element.

4. The abrasion plate as claimed in claim 1, wherein the at least one backing element has a maximum thickness of 5 mm measured perpendicularly to a contact face of the at least one backing unit with the at least one fastening unit.

5. The abrasion plate as claimed in claim 1, further comprising: at least one heat transfer coating arranged at least one of between the at least one backing element, and the fastening unit, and on a side of the at least one fastening unit that faces away from the at least one backing element.

6. The abrasion plate as claimed in claim 1, wherein: the at least one fastening unit comprises at least one fastening element; and the at least one fastening element bears at least substantially with full surface contact against the at least one backing element.

7. The abrasion plate as claimed in claim 7, further comprising: at least one protective unit, which is arranged on the at least one backing element and is designed, during an abrasion operation, to protect a workpiece, the at least one backing element or an external unit, from damage, and/or to damp a direct impact, of the at least one backing element on the workpiece or on the external unit.

8. The abrasion plate as claimed in claim 7, wherein a protective element of the at least one protective unit has a melting temperature of more than 220° C.

9. The abrasion plate as claimed in claim 7, wherein: the at least one protective unit comprises at least one protective element; the at least one protective element, as viewed along a central axis of the at least one backing element has an outer edge that has a greater minimum distance than has an outer edge of the at least one backing element from the central axis of the at least one backing element.

10. The abrasion plate as claimed in claim 7, wherein the at least one protective unit comprises at least one protective element that has at least one outer face which, at least substantially perpendicularly to a central axis of the at least one backing element, has a greater maximum distance than has an outer edge of the at least one backing element from the central axis, and which, as viewed in a sectional plane comprising the central axis of the at least one backing element, is at least substantially inclined relative to the central axis (96a, 96e) of the at least one backing element.

11. The abrasion plate as claimed in claim 7, wherein the at least one protective unit comprises at least one protective element that extends, at least substantially perpendicularly to a central axis of the at least one backing element, at least substantially entirely, over a maximum extent of the at least one backing element.

12. The abrasion plate as claimed in claim 7, wherein the at least one backing element realizes at least one holding means that is designed to hold a protective element of the at least one protective unit on the at least one backing element in a force-fitting and/or form-fitting manner.

13. The abrasion plate as claimed in claim 1, wherein the at least one fastening unit comprises at least one intermediate element that is designed to be arranged between the backing element and the abrasive so as to be at least substantially non-destructively removable and/or replaceable at least substantially without use of any tools, wherein the at least one intermediate element is made from a material having a melting temperature of more than 180° C.

14. The abrasion plate as claimed in claim 1, wherein the at least one backing element is realized as a strut structure.

15. The abrasion plate as claimed in claim 14, wherein: the at least one backing unit comprises at least one support element; the at least one support element at least mainly encloses the at least one backing element; and the at least one support element has a thermal conduction characteristic that is greater than a thermal conduction characteristic of the at least one backing element.

16. An abrasive, comprising: at least one working face that has a multiplicity of abrasive elements; at least one interface or connection face configured to be arranged on or connected to the at least one fastening unit of the abrasion plate of claim 1, wherein the at least one interface or connection face has at least one fastening element realized as a hook-and-loop fastening, which is made from a material having a melting temperature of more than 160° C.

17. The abrasive as claimed in claim 16, further comprising at least one heat transfer coating arranged between the at least one working face and the at least one fastening element.

18. An abrasion tool system, comprising at least one abrasion plate as claimed in claim 1.

Description

DRAWINGS

[0026] Further advantages are given by the following description of the drawings. Four exemplary embodiments of the invention are represented in the drawings. The drawings, the description and the claims contain numerous features in combination. Persons skilled in the art will also expediently consider the features individually and combine them to create appropriate further combinations.

[0027] In the drawings:

[0028] FIG. 1 shows a schematic perspective view of an abrasion tool system according to the invention comprising an abrasion tool device according to the invention and an abrasive according to the invention,

[0029] FIG. 2 shows a schematic exploded representation of the abrasion tool device according to the invention,

[0030] FIG. 3 shows a schematic representation of a cross-section of the abrasion tool system according to the invention comprising the abrasion tool device according to the invention and the abrasive according to the invention,

[0031] FIG. 4 shows a schematic perspective view of a backing element realized as a strut structure and of a support element of a backing unit of an alternative design of an abrasion tool device according to the invention,

[0032] FIG. 5 shows a schematic representation of a backing element, realized as a strut structure, of a backing unit of a further alterative design of an abrasion tool device according to the invention, in a top view,

[0033] FIG. 6 shows a schematic representation of an alternative design of an abrasion tool system according to the invention comprising another alternative design of an abrasion tool device according to the invention and an alternative design of an abrasive according to the invention, in a top view,

[0034] FIG. 7 shows a schematic sectional view of a protective unit and of a backing element of a further alternative design of an abrasion tool device according to the invention, through a central axis of a backing element of the abrasion tool device

[0035] FIG. 8 shows a perspective representation of the protective unit and of the backing element of the further alternative design of the abrasion tool device according to the invention, and

[0036] FIG. 9 shows a schematic detail of a cross-section of another further design of an abrasion tool system according to the invention comprising an abrasion tool device according to the invention that comprises an intermediate element, and comprising an abrasive according to the invention.

DESCRIPTION OF THE EXEMPLARY EMBODIMENTS

[0037] FIG. 1 shows an abrasion tool system 10a in an assembled state. The abrasion tool system 10a has an abrasion tool device 12a, realized an abrasion plate, which comprises a connection region 14a. The connection region 14a is designed to connect the abrasion tool system 10a to an abrasion power tool. The abrasion tool device 12a comprises a backing unit 16a, realized as a support plate, and a fastening unit 18a for detachably fastening an abrasive 20a, realized as an abrasive paper, of the abrasion tool system 10a to the backing unit 16a, the backing unit 16a comprising at least one backing element 22a on which the abrasive 20a is arranged via the fastening unit 18a. In the assembled state, the abrasive 20a is fastened to the backing unit 16a, in particular the backing element 22a, via the fastening unit 18a. The backing unit 16a comprises exactly one backing element 22a, which is made from a material having a melting temperature of more than 180° C., preferably more than 200° C., particularly preferably more than 220° C., very particularly preferably more than 240° C., and particularly advantageously preferably more than 250° C. Preferably, the backing element 22a is at least mainly, in particular at least substantially entirely, made from the material having a melting temperature that in particular is less than 350° C., preferably less than 300° C., particularly preferably less than 280° C., and very particularly preferably less than 260° C. Preferably, the material from which the backing element 22a is made has a melting temperature that is less than 350° C. and greater than 180° C., in particular less than 300° C. and greater than 200° C., preferably less than 280° C. and greater than 220° C., particularly preferably less than 280° C. and greater than 240° C., and very particularly preferably less than 280° C. and greater than 250° C. In particular, the backing element 22a is made from a metal. The backing element 22a is plate-like. The connection region 14a delimits a multiplicity of form-fitting recesses 24a, via which the abrasion tool system 10a, in particular at least the backing unit 16a and the connection region 14a, can be fastened to the abrasion power tool, in particular to a tool receiver of the abrasion power tool. The connection region 14a is made from a material, in particular a metal, that has a melting temperature of more than 180°, preferably more than 200° C., particularly preferably more than 220° C., very particularly preferably more than 240° C., and particularly advantageously preferably more than 250° C. Preferably, the connection region 14a is at least mainly, in particular at least substantially entirely, made from the material having a melting temperature that in particular is less than 350° C., preferably less than 300° C., particularly preferably less than 280° C., and very particularly preferably less than 260° C. Preferably, the connection region 14a is at least mainly, in particular at least substantially entirely, made from the material having a melting temperature that is less than 350° C. and greater than 180° C., in particular less than 300° C. and greater than 200° C., preferably less than 280° C. and greater than 220° C., particularly preferably less than 280° C. and greater than 240° C., and very particularly preferably less than 280° C. and greater than 250° C. The connection region 14a is connected at least in a rotationally fixed manner to the backing element 22a. The abrasion tool system 10a, in particular the abrasion tool device 12a, comprises an axis of motion 26a about which at least the backing unit 16a, in particular the backing element 22a, the fastening unit 18a and the abrasive 20a can be moved, at least partially, and can be driven by means of a drive unit of the abrasion power tool. The backing element 22a is arranged perpendicularly to the axis of motion 26a, a plane of main extent of the backing element 22a being in particular arranged perpendicularly to the axis of motion 26a. However, other designs of the abrasion tool system 10a, in particular of the abrasion tool device 12a and/or of the abrasive 20a, are also conceivable.

[0038] The abrasion tool device 12a has a protective unit 80a, which is arranged on the backing element 22a and is designed to protect a workpiece or an external unit, in particular from damage, and/or to damp an impact, in particular a direct impact, of the backing element 22a on the workpiece or on the external unit, in particular during an abrasion operation, the workpiece and the external unit in particular not being shown in FIG. 1.

[0039] The protective unit 80a comprises a protective element 84a arranged on an outer side 88a of the backing element 22a. The protective element 84a is arranged on an outer edge 82a of the backing element and on two outer faces 90a, 92a of the backing element 22a that face away from the abrasive 20a and the contact face 34a. The protective element 84a is arranged at a distance from the contact face 34a and the abrasive 20a. Preferably, one outer face 90a of the two outer faces 90a, 92a is aligned transversely, in particular perpendicularly, to the contact face 34a and at least partially delimits the contact face 34a. Preferably, a further outer face 92a of the two outer faces 90a, 92a is aligned parallel to the contact face 34a. The outer face 90a extends at least substantially entirely around the axis of motion 26a. In particular, the outer edge 82a is arranged within the plane of main extent of the backing element 22a and extends at least substantially entirely around the axis of motion 26a. Preferably, the outer edge 82a and the outer face 92a that is aligned parallel to the contact face 34a are arranged at a distance from the contact face 34a. The protective element 84a is arranged, along the outer edge 82a of the backing element 22a, at least substantially entirely around the axis of motion 26a. The protective element 84a, in particular as viewed perpendicularly to the plane of main extent of the backing element 22a, at least partially encloses the backing element 22a in a region of the outer edge 82a. In particular, the protective element 84a encompasses the outer edge 82a of the backing element 22a. The protective element 84a, as viewed perpendicularly to the plane of main extent of the backing element 22a, is arranged on the backing element 22a at least mainly, in particular entirely, on a side of a plane of the backing unit 16a that extends along the contact face 34a. The protective element 84a extends at least mainly, in particular at least substantially entirely, over a maximum thickness 50a of the backing element 22a at the outer edge 82a. The protective element 84a, in particular as viewed perpendicularly to the plane of main extent of the backing element 22a, has a maximum thickness 86a of in particular at least 0.3 mm, preferably at least 0.5 mm, preferably at least 0.8 mm, and particularly preferably at least 1 mm. The protective element 84a bears, along the outer edge 82a of the backing element 22a, against the outer face 90a and the further outer face 92a of the backing element 22a. The protective element 84a is connected as a single piece to the backing element 22a, in particular by means of an adhesive bonded joint. It is also conceivable, however, for the protective element 84a to be fastened to the backing element 22a by means of a form-fitting and/or force-fitting connection, in particular the backing element 22a having, in a region of the outer edge 82a, the outer face 90a and/or the further outer face 92a, at least one or more form-fitting and/or force-fitting extensions designed to fasten the protective element 84a. The protective unit 80a, in particular the protective element 84a, is made from a material having a melting temperature of more than 160° C., in particular more than 180° C., preferably more than 200° C., particularly preferably more than 220° C., and very particularly preferably more than 240° C. The protective unit 80s, in particular the protective element 84a, is at least mainly, in particular at least substantially entirely, made from the material having a melting temperature that in particular is less than 350° C., preferably less than 300° C., particularly preferably less than 280° C., and very particularly preferably less than 260° C. The protective unit 80a, in particular the protective element 84a, is at least mainly, in particular at least substantially entirely, made from the material having a melting temperature that is less than 350° C. and greater than 160° C., in particular less than 300° C. and greater than 180° C., preferably less than 280° C. and greater than 200° C., particularly preferably less than 280° C. and greater than 220° C., and very particularly preferably less than 280° C. and greater than 240° C. The protective unit 80a, in particular the protective element 84a, is made from a plastic, in particular a thermoplastic. It is also conceivable, however, for the protective unit 80a, in particular the protective element 84a, to be made from a polyamide and/or from a rubber. Preferably, the protective element 84a is made from a material that has a lesser stiffness than the backing element 22a, in particular the material from which the backing element 22a is made. The protective unit 80a, in particular the protective element 84a, is realized so as to be replaceable, in particular the protective unit 80a, in particular the protective element 84a, being separable from the backing element 22a without leaving any residue and/or non-destructively. However, other designs of the protective unit 80a are also conceivable, for example comprising more than one protective element 84a, arranged along the outer edge 82a, the outer face 90a and/or the further outer face 92a. In particular in a design in which the protective unit 80a has more than one protective element 84a, it is conceivable for the protective elements 84a to only partially cover the outer edge 82a, the outer face 90a and/or the further outer face 92a of the backing element 22a, for example in a region of corners of a basic shape of the backing element 22a. Alternatively, it is conceivable for the protective element 84a to be arranged, in particular exclusively, on the backing element 22a via the further outer face 92a, in particular the protective element 84a, as viewed perpendicularly to the plane of main extent of the backing element 22a, extending out from the axis of motion 26a, beyond the outer edge 82a of the backing element 22a. Alternatively, it is conceivable for the protective element 84a to be arranged, in particular exclusively, on the backing element 22a, on the outer face 90a of the backing element 22a. The protective element 84a, in particular as viewed perpendicularly to the plane of main extent of the backing element 22a, has an outer edge or face that has a greater minimum distance than have/has the outer edge 82a and/or the outer face 90a of the backing element 22a from the axis of motion.

[0040] FIG. 2 shows an exploded diagram of the abrasion tool device 12a. The fastening unit 18a comprises a fastening element 28a for fastening the abrasive 20a to the backing unit 16a, in particular to the backing element 22a, which is made from a material having a melting temperature of more than 160° C., in particular more than 180° C., preferably more than 200° C., particularly preferably more than 220° C., very particularly preferably more than 240° C., and particularly advantageously preferably more than 250° C. Preferably, the fastening element 28a is at least mainly, in particular at least substantially entirely, made from the material having a melting temperature that in particular is less than 350° C., preferably less than 300° C., particularly preferably less than 280° C., and very particularly preferably less than 260° C. Preferably, the fastening element 28a is at least mainly, in particular at least substantially entirely, made from the material having a melting temperature that is less than 350° C. and greater than 160° C., in particular less than 300° C. and greater than 180° C., preferably less than 280° C. and greater than 200° C., particularly preferably less than 280° C. and greater than 220° C., and very particularly preferably less than 280° C. and greater than 240° C. The fastening element 28a of the fastening unit 18a is made from a material different from that of the backing element 22a. The axis of motion 26a extends centrally through the backing element 22a and the fastening element 28a of the fastening unit 18a. The fastening element 28a of the fastening unit 18a is realized as part of a hook-and-loop fastening. The fastening element 28a of the fastening unit 18a has a basic shape, as viewed in a plane of main extent of the fastening element 28a of the fastening unit 18a, at least an outer contour of the basic shape of the fastening element 28a of the fastening unit 18a corresponding to an outer contour of a basic shape of the backing element 22a. The fastening element 28a of the fastening unit 18a is realized so as to correspond to a fastening element 78a of the abrasive 20a. The fastening element 28a of the fastening unit 18a is at least mainly made from a fiber-reinforced thermoplastic.

[0041] The fastening unit 18a has an adhesive element 30a realized as a bonding agent, which is designed to replaceably fasten the fastening element 28a of the fastening unit 18a, realized as a hook-and-loop fastening, to the backing element 22a. The adhesive element 30a is designed to connect the fastening element 28a of the fastening unit 18a to the backing element 22a in a materially bonded manner. In FIG. 2, the adhesive element 30a is shown arranged on the fastening element 28a of the fastening unit 18a. The adhesive element 30a extends at least mainly over a face 32a of the fastening element 28a of the fastening unit 18a that faces toward the backing element 22a. In particular, the adhesive element 30a is arranged with an even distribution over the face of the fastening element 28a of the fastening unit 18a that faces toward the backing element 22a. The adhesive element 30a is made from a material having a melting temperature of more than 160° C., in particular more than 180° C., preferably more than 200° C., particularly preferably more than 220° C., very particularly preferably more than 240° C., and particularly advantageously preferably more than 250° C. Preferably, the adhesive element 30a is at least mainly, in particular at least substantially entirely, made from the material having a melting temperature that is in particular less than 350° C., preferably less than 300° C., particularly preferably less than 280° C., and very particularly preferably less than 260° C. Preferably, the adhesive element 30a is at least mainly, in particular at least substantially entirely, made from the material having a melting temperature that is less than 350° C. and greater than 160° C., in particular less than 300° C. and greater than 180° C., preferably less than 280° C. and greater than 200° C., particularly preferably less than 280° C. and greater than 220° C., and very particularly preferably less than 280° C. and greater than 240° C. The backing element 22a has a contact face 34a that is realized as a flat face. The fastening unit 18a is arranged on the backing element 22a via the contact face 34a. The fastening element 28a of the fastening unit 18a and the adhesive element 30a are arranged, on the backing element 22a, on the contact face 34a of the backing element 22a. Other designs of the fastening unit 18a, in particular of the adhesive element 30a, are also conceivable, in particular the adhesive element 30 being realized in such a manner that the fastening element 28a is non-detachably connected to the backing element 22a via the adhesive element 30a. The contact face 34a is arranged on a side of the backing unit 16a, in particular of the backing element 22a, that faces away from the connection region 14a. The backing element 22a, as viewed in the plane of main extent of the backing element 22a, has a triangular basic shape, in particular with corners of the basic shape being rounded.

[0042] The backing element 22a delimits six recesses 36a designed to dissipate heat from the abrasive 20a and/or the backing element 22a to an environment surrounding the backing unit 16a. The backing element 22a is realized in such a manner that the recesses 36a extend from a side on which the contact face 34a is arranged, preferably over a maximum thickness of the backing element 22a, to a side of the backing element 22a that faces toward the connection region 14a. The backing element 22a is realized in such a manner that the recesses 36a are arranged, with an even distribution over the contact face 34a of the backing element 22a, around the axis of motion 26a, in particular the connection region 14a. The faces 38a of the backing element 22a that delimit the recesses 36a, as viewed in the plane of main extent of the backing element 22a, are of an identical basic shape. Preferably, the faces delimiting the recesses 36a are arranged perpendicularly to the contact face 34a. The recesses 36a delimited by the backing element 22a are designed at least to increase a diffusion of heat generated during an abrasion process, in particular in a processing region 40a of the abrasive 20a, from the contact face 34a to a side of the backing unit 16a, in particular of the backing element 22a, that faces away from the fastening unit 18a, preferably as compared with a design of the backing element 22a in which the backing element 22a is realized without recesses. The connection region 14a delimits, via an outer side 33a, six recesses 35a which, when the connection region 14a is fastened to the backing unit 16a, in particular as viewed perpendicularly to the plane of main extent of the backing element 22a, are arranged congruently with the recesses 36a of the backing element 22a. Preferably, the outer side 33a of the connection region 14a, in regions of the recesses 35a, 36a delimiting by the backing element 22a and the connection region 14a, is at least partially parallel, in particular flush, with the faces 32a of the backing element 22a that delimit the recesses 36a delimited by the backing element 22a. In particular, the backing element 22a delimits at least one further recess 37a, which extends around the axis of motion 26a. The further recess 37a, as viewed in a plane of main extent of the backing element 22a, is arranged in a region of the backing element 22a in which the connection region 14a is arranged on the backing element 22a. However, other designs of the backing unit 16a, in particular of the backing element 22a, are also conceivable.

[0043] The abrasion tool device 12a has a heat transfer coating 42a, which is arranged between the backing unit 16a, in particular the backing element 22a, and the fastening unit 18a, preferably on the contact face 34a. It is also conceivable, however, for the heat transfer coating 42a to be arranged on the fastening unit 18a on a side of the fastening unit 18a, in particular of the fastening element 28a of the fastening unit 18a, that faces away from the backing unit 16a, in particular the backing element 22a. The heat transfer coating 42a bears at least substantially with full surface contact against the fastening element 28a of the fastening unit 18a. The heat transfer coating 42a has a greater thermal conduction characteristic than the backing unit 16a, in particular the backing element 22a, and/or the fastening unit 18a, in particular the fastening element 28a of the fastening unit 18a. The heat transfer coating 42a is made of copper. However, other designs of the heat transfer coating 42a are also conceivable, the heat transfer coating 42a being made, for example, from a noble metal and/or an alkaline earth metal, a carbon compound, in particular graphene, diamond, and/or a graphite close to graphene or the like. The heat transfer coating 42a is in particular vapor-deposited onto the fastening element 28a of the fastening unit 18a.

[0044] The fastening element 28a of the fastening unit 18a bears at least substantially with full surface contact against the backing element 22a, in particular the contact face 34a, via the adhesive element 30a. The fastening unit 18a, in particular the fastening element 28a of the fastening unit 18a, delimits six cut-outs 44a that are designed to dissipate heat from the abrasive 20a and/or the backing unit 16a to an environment surrounding the fastening unit 18a, in particular the fastening element 28a of the fastening unit 18a. The fastening unit 18a, in particular the fastening element 28a of the fastening unit 18a, is realized in such a manner that the cut-outs 44a extend from a side on which the fastening element 28a of the fastening unit 18a is arranged on the contact face 34a, over a maximum thickness 46a of the fastening unit 18a, in particular of the fastening element 28a of the fastening unit 18a, to a side of the fastening unit 18a, in particular of the fastening element 28a of the fastening unit 18a, that faces toward the abrasive 20a. The fastening element 28a is realized in such a manner that the cut-outs 44a are arranged uniformly around the axis of motion 26a, as viewed in the plane of main extent of the fastening element 28a of the fastening unit 18a. In particular, the fastening element 28a of the fastening unit 18a delimits, around the axis of motion 26a, a recess 48a arranged so as to correspond to the further recess 37a of the backing element 22a around the axis of motion 26a. However, other designs of the fastening unit 18a, in particular of the fastening element 28a of the fastening unit 18a, are also conceivable, for example as an adhesive bonded joint, in particular a re-releasable adhesive bonded joint, as a hook, as a clip, as a vacuum element or the like.

[0045] FIG. 3 shows the abrasion tool system 10a in a sectional plane aligned parallel to the axis of motion 26a. In particular, for greater clarity the layer thicknesses of the individual elements shown in FIG. 3 represented schematically, and are not to scale. Preferably, FIG. 3 shows a sectional plane at a distance from the outer edge 82a and/or from the outer side 88a, in particular the protective unit 80a not being shown in FIG. 3. The backing unit 16a, in particular the backing element 22a, has a maximum thickness 50a of at least substantially 2 mm perpendicularly to the contact face 34a of the backing unit 16a with the fastening unit 18a. It is also conceivable, however, for the backing unit 16a, in particular the backing element 22a, to have a maximum thickness 50a of less than 2 mm, particularly preferably of at least substantially 1 mm, 0.8 mm or 0.6 mm. The backing element 22a has a flatness on the contact face 34a of maximally 2% of the maximum thickness. The backing element 22a is realized in such a manner that the maximum thickness 50a extends from the contact face 34a to a bearing contact surface of the backing element 22a at which the connection region 14a bears against the backing element 22a, in particular the connection region 14a not being shown in FIG. 3. The fastening unit 18a, in particular the fastening element 28a of the fastening unit 18a, has a maximum thickness 46a of 2 mm perpendicularly to a face of the fastening element 28a of the fastening unit 18a that faces toward the contact face 34a of the backing element 22a. The adhesive element 30a has a maximum thickness 52a of 1 mm perpendicularly to a face of the adhesive element 30a that faces toward the contact face 34a of the backing element 22a.

[0046] The abrasive 20a comprises a working face 54a, which has a multiplicity of abrasive elements, and a connection face 53a for connection to the fastening unit 18a of the abrasion tool device 12a. The connection face 53a comprises a fastening element 78a, realized as part of a hook-and-loop fastening, that is made from a material having a melting temperature of more than 160° C., in particular more than 180° C., preferably more than 200° C., particularly preferably more than 220° C., very preferably more than 240° C., and particularly advantageously preferably more than 250° C. Preferably, the fastening element 78a of the abrasive 20a is at least mainly, in particular at least substantially entirely, made from the material having a melting temperature that in particular is less than 350° C., preferably less than 300° C., particularly preferably less than 280° C., and very particularly preferably less than 260° C. Preferably, the fastening element 78a of the abrasive 20a is at least mainly, in particular at least substantially entirely, made from the material having a melting temperature that is less than 350° C. and greater than 160° C., in particular less than 300° C. and greater than 180° C., preferably less than 280° C. and greater than 200° C., particularly preferably less than 280° C. and greater than 220° C., and very particularly preferably less than 280° C. and greater than 240° C. The fastening element 78a of the abrasive 20a is realized so as to correspond to the fastening element 28a of the fastening unit 18a. The fastening element 78a of the abrasive 20a is made of a fiber-reinforced thermoplastic. The connection face 53a, in particular the fastening element 78a of the abrasive 20a, bears at least substantially with full surface contact against the working face 54a, on a side of the working face 54a that faces away from the abrasive elements. The connection face 53a, in particular the fastening element 78a of the abrasive 20a, extends over an entire side of the working face 54a. The working face 54a and the connection face 53a each have a basic shape, as viewed in a plane of main extent of the abrasive 20a, at least one outer contour of the basic shape of the working face 54a and of the connection face 53a corresponding to an outer contour of the basic shape of the backing element 22a. The working face 54a has a maximum thickness 56a of 2 mm parallel to the axis of motion 26a. The connection face 53a, in particular the fastening element 78a of the abrasive 20a, has a maximum thickness 58a of 2 mm parallel to the axis of motion 26a. The abrasive 20a comprises a heat transfer coating 60a, which is arranged between the working face 54a and the fastening element 78a of the abrasive 20a. Preferably, the heat transfer coating 60a of the abrasive 20a is designed to remove heat generated at the working face 54a during an abrasion process. The heat transfer coating 60a of the abrasion tool device 12a and the heat transfer coating 42a of the abrasive 20a are each realized as a flat, thin layer and have a maximum thickness 62a of 0.3 mm parallel to the axis of motion 26a. The heat transfer coating 60a of the abrasive 20a bears at least substantially with full surface contact against the working face 54a and against the fastening element 78a of the abrasive 20a. The heat transfer coating 60a of the abrasive 20a has in particular a higher thermal conduction characteristic than the working face 54a and the fastening element 78a of the abrasive 20a. However, other designs of the abrasive 20a, in particular of the fastening element 78a of the abrasive 20a, are also conceivable.

[0047] FIGS. 4 to 9 show five further exemplary embodiments of the invention. The following descriptions and the drawings are limited substantially to the differences between the exemplary embodiments and, in principle, reference may also be made to the drawings and/or the description of the other exemplary embodiments, in particular of FIGS. 1 to 3, in respect of components having the same designation, in particular in respect of components denoted by the same references. To distinguish the exemplary embodiments, the letter a has been appended to the references of the exemplary embodiment in FIGS. 1 to 3. In the exemplary embodiments of FIGS. 4 to 9, the letter a is replaced by the letters b to f.

[0048] FIG. 4 shows a backing element 22b of a backing unit 16b of an alternative design of an abrasion tool device 12b. The abrasion tool device 12b comprises the backing unit 16b and a fastening unit 18b for detachably fastening an abrasive 20b of an abrasion tool system 10b to the backing unit 16b, the backing unit 16b comprising the backing element 22b on which the abrasive 20b is arranged via the fastening unit 18b. The backing element 22b is made from a material having a melting temperature of more than 180° C., preferably more than 200° C., particularly preferably more than 220° C., very particularly preferably more than 240° C., and particularly advantageously preferably more than 250° C. Preferably, the backing element 22b is at least mainly, in particular at least substantially entirely, made from the material having a melting temperature that in particular is less than 350° C., preferably less than 300° C., particularly preferably less than 280° C., and very particularly preferably less than 260° C. Preferably, the backing element 22b is at least mainly, in particular at least substantially entirely, made from the material having a melting temperature that is less than 350° C. and greater than 180° C., in particular less than 300° C. and greater than 200° C., preferably less than 280° C. and greater than 220° C., particularly preferably less than 280° C. and greater than 240° C., and very particularly preferably less than 280° C. and greater than 250° C. The abrasion tool device 12b represented in FIG. 4 is of a design that is at least substantially similar to the abrasion tool device 12a described in the description of FIGS. 1 to 3, such that reference may be made, at least substantially, to the description of FIGS. 1 to 3 with respect to a design of the abrasion tool device 12b represented in FIG. 4. In contrast to the abrasion tool device 12a described in the description of FIGS. 1 to 3, the backing element 22b of the abrasion tool device 12b represented in FIG. 4 is realized as a strut structure 64b. The strut structure 64b is realized in the manner of a skeleton. The strut structure 64b is composed of a multiplicity of identical elementary cells 66b, witch are each composed of twelve struts 68b. The elementary cells 66b of the strut structure 64b are cubic. The elementary cells 66b of the strut structure 64b, as viewed in a plane of main extent of the backing unit 16b, have a rectangular basic shape. The strut structure 64b is realized as a cubic grid, with struts 68b arranged along the grid lines. The backing element 22b is composed of a layer 72b of elementary cells 66b of the strut structure 64b that extend parallel to the plane of main extent of the backing element 22b and perpendicularly to an axis of motion 26b of the abrasion tool device 12b. The backing unit 16b comprises a support element 69b, the support element 69b at least mainly enclosing the backing element 22b, and the support element 69b having a thermal conduction characteristic that is greater than a thermal conduction characteristic of the backing element 22b. The support element 69b is designed to dissipate heat generated at the abrasive 20b. In particular, the support element 69b is designed to protect the backing element 22b against impacts and/or plastic deformations, in particular of the individual struts 68b. The backing element 22b is realized as an endoskeleton and is arranged, at least mainly, within the support element 69b. The support element 69b is made from a material having a melting temperature of more than 160° C., in particular more than 180° C., preferably more than 200° C., particularly preferably more than 220° C., very particularly preferably more than 240° C., and particularly advantageously preferably more than 250° C. Preferably, the support element 69b is at least mainly, in particular at least substantially entirely, made from the material having a melting temperature that in particular is less than 350° C., preferably less than 300° C., particularly preferably less than 280° C., and very particularly preferably less than 260° C. Preferably, the backing element 69b is at least mainly, in particular at least substantially entirely, made from the material having a melting temperature that is less than 350° C. and greater than 160° C., in particular less than 300° C. and greater than 180° C., preferably less than 280° C. and greater than 200° C., particularly preferably less than 280° C. and greater than 220° C., and very particularly preferably less than 280° C. and greater than 240° C. The support element 69b is at least mainly made from a foam material. The backing element 22b has a greater stiffness than the support element 69b. However, other designs of the strut structure 64b and/or the support element 69b are also conceivable.

[0049] FIG. 5 shows a top view of a backing element 22c of a backing unit 16c of a further alternative design of an abrasion tool device 12c. The abrasion tool device 12c comprises the backing unit 16c and a fastening unit 18c for detachably fastening an abrasive 20c of an abrasion tool system 10c to the backing unit 16c, the backing unit 16c comprising the backing element 22c on which the abrasive 20c is arranged via the fastening unit 18c. The backing element 22c is made from a material having a melting temperature of more than 180° C., preferably more than 200° C., particularly preferably more than 220° C., very particularly preferably more than 240° C., and particularly advantageously preferably more than 250° C. Preferably, the backing element 22c is at least mainly, in particular at least substantially entirely, made from the material having a melting temperature that in particular is less than 350° C., preferably less than 300° C., particularly preferably less than 280° C., and very particularly preferably less than 260° C. Preferably, the backing element 22c is at least mainly, in particular at least substantially entirely, made from the material having a melting temperature that is less than 350° C. and greater than 180° C., in particular less than 300° C. and greater than 200° C., preferably less than 280° C. and greater than 220° C., particularly preferably less than 280° C. and greater than 240° C., and very particularly preferably less than 280° C. and greater than 250° C. The abrasion tool device 12c represented in FIG. 5 is of a design that is at least substantially similar to the abrasion tool device 12b described in the description of FIG. 4, such that reference may be made, at least substantially, to the description of FIG. 4 with respect to a design of the abrasion tool device 12c represented in FIG. 5. In contrast to the abrasion tool device 12b described in the description of FIG. 4, the backing element 22c of the abrasion tool device 12c represented in FIG. 5 is realized as a strut structure 64c, the strut structure 64c being composed of a multiplicity of elementary meshes 70c. The elementary meshes 70c of the strut structure 64c are realized in the manner of a honeycomb, and are each composed of six struts 68c. The strut structure 64c, as viewed along an axis of the backing element 22c aligned perpendicularly to a contact face 34c of the backing element 22c and/or along an axis of motion 26c of the abrasion tool device 12c, has a honeycomb structure, in particular the elementary meshes 70c of the strut structure 64c each having the shape of an equilateral hexagon in at least one sectional plane aligned parallel to the contact face 34c. The backing element 22c is composed of more than one layer 72c of elementary meshes 70c of the strut structure 64c, only one layer 72c being shown in FIG. 5. The layers 72c of the elementary meshes 70c are connected via struts 68c, and are at least partially offset from one another along an axis of the backing element 22c that is perpendicular to the contact face 34c. The layers of the elementary meshes 70c extend perpendicularly to the axis of motion 26c and/or parallel to the contact face 34c. The layers of the elementary meshes 70c are arranged along the axis of the backing element 22c that is aligned perpendicularly to the contact face 34c, in particular the axis of motion 26c, alternately from layer to layer in an offset manner along at least one axis aligned parallel to the contact face 34c. In particular, the strut structure 64c is realized as a graphite structure.

[0050] FIG. 6 shows a top view of an alternative design of an abrasion tool system 10d. The abrasion tool system 10d represented in FIG. 6 is of a design that is at least substantially similar to the abrasion tool system 10a described in the description of FIGS. 1 to 3, such that reference may be made, at least substantially, to the description of FIGS. 1 to 3 with respect to a design of the abrasion tool system 10d represented in FIG. 6. In contrast to the abrasion tool system 10a described in the description of FIGS. 1 to 3, the abrasion tool system 10d represented in FIG. 6 has an abrasive 20d that is arranged only on one side of an axis of motion 26d of an abrasion tool device 12d. The abrasion tool system 10d is designed for use with an abrasion power tool realized as a multifunction power tool that can be driven in an oscillating manner. The abrasion tool device 12d comprises a backing unit 16d and a fastening unit 18d for detachably fastening an abrasive 20d to the backing unit 16d, the backing unit 16d comprising a backing element 22d on which the abrasive 20d is arranged via the fastening unit 18d. The backing element 22d is made from a material having a melting temperature of more than 180° C., preferably more than 200° C., particularly preferably more than 220° C., very particularly preferably more than 240° C., and particularly advantageously preferably more than 250° C. Preferably, the backing element 22d at least mainly, in particular at least substantially entirely, is made from the material having a melting temperature that in particular is less than 350° C., preferably less than 300° C., particularly preferably less than 280° C., and very particularly preferably less than 260° C. Preferably, the backing element 22d is at least mainly, in particular at least substantially entirely, made from the material having a melting temperature that is less than 350° C. and greater than 180° C., in particular less than 300° C. and greater than 200° C., preferably less than 280° C. and greater than 220° C., particularly preferably less than 280° C. and greater than 240° C., any very particularly preferably less than 280° C. and greater than 250° C. It is conceivable for the abrasion tool device 12d, in a manner similar to the abrasion tool device 12a described in FIGS. 1 to 3, to comprise a protective unit 80d, which is not shown in FIG. 6. The abrasion tool device 12d comprises a connection region 14d arranged around the axis of motion 26d. The backing element 22d is arranged around the axis of motion 26d and, in a direction away from the axis of motion 26d, has a backing region 74d on which the abrasive 20d can be fastened to the backing element 22d via the fastening unit 18d. The backing region 74d has, at least partially, a triangular basic shape, in particular with corners of the basic shape being rounded. Also conceivable, however, are designs of the backing element 22d in which the basic shape is, for example, star-shaped, square-shaped and/or circular. The fastening unit 18d has a fastening element 28d, realized as a re-releasable adhesive bonded joint, for fastening the abrasive 20d, arranged in the backing region 74d on the backing element 22d, to the backing unit 16d. The fastening element 28d of the fastening unit 18d is made from a material having a melting temperature of more than 160° C., in particular more than 180° C., preferably more than 200° C., particularly preferably more than 220° C., very particularly preferably more than 240° C., and particularly advantageously preferably more than 250° C. Preferably, the fastening element 28d is at least mainly, in particular at least substantially entirely, made from the material having a melting temperature that in particular is less than 350° C., preferably less than 300° C., particularly preferably less than 280° C., and very particularly preferably less than 260° C. Preferably, the fastening element 28d is at least mainly, in particular at least substantially entirely, made from the material having a melting temperature that is less than 350° C. and greater than 160° C., in particular less than 300° C. and greater than 180° C., preferably less than 280° C. and greater than 200° C., particularly preferably less than 280° C. and greater than 220° C., and very particularly preferably less than 280° C. and greater than 240° C. The backing element 22d has a maximum thickness 50d of 2 mm perpendicularly to a contact face 34d of the backing unit 16d with the fastening unit 18d. The contact face 34d extends over an entire face of the backing element 22d that faces toward the connection region 14d, within the backing region 74d. In particular, the contact face 34d is arranged perpendicularly to the axis of motion 26d on the backing element 22d. The abrasion tool device 12d comprises a heat transfer coating 42d arranged, on a side of the fastening unit 18d that faces away from the backing unit 16d, in particular the backing element 22d, on the fastening element 28d of the fastening unit 18d. The fastening unit 18d has an adhesive element 30d realized a bonding agent, which is designed to fasten the fastening element 28d of the fastening unit 18d, in particular non-detachably, to the backing element 22d. It is also conceivable, however, for the holding element 30d to be realized in such a manner that the fastening element 28d is replaceably fastened to the backing element 22d via the holding element 30d. The fastening element 28d of the fastening unit 18d bears with full-surface contact against the backing element 22d via the adhesive element 30d, in particular within the backing region 74d. The abrasive 20d comprises a working face 54d, which has a multiplicity of abrasive elements, and an interface 76d for arrangement of the abrasive 20d on the fastening unit 18d of the abrasion tool device 12d. The interface 76d has a fastening element 78d that is made from a material having a melting temperature of more than 160° C., in particular more than 180° C., preferably more than 200° C., particularly preferably more than 220° C., very particularly preferably more than 240° C., and particularly advantageously preferably more than 250° C. Preferably, the fastening element 78d of the abrasive 76d is at least mainly, in particular at least substantially entirely, made from the material having a melting temperature that in particular is less than 350° C., preferably less than 300° C., particularly preferably less than 280° C., and very particularly preferably less than 260° C. Preferably, the fastening element 78d of the abrasive 76d is at least mainly, in particular at least substantially entirely, made from the material having a melting temperature that is less than 350° C. and greater than 160° C., in particular less than 300° C. and greater than 180° C., preferably less than 280° C. and greater than 200° C., particularly preferably less than 280° C. and greater than 220° C., and very particularly preferably less than 280° C. and greater than 240° C. The fastening element 78d of the abrasive 20d is realized as an adhesive surface, and is designed to act in combination with the fastening element 28d of the fastening unit 18d.

[0051] FIGS. 7 and 8 show a further alternative design of an abrasion tool device 12e. In particular, the abrasion tool device 12e is realized as part of an abrasion tool system 10e. FIG. 7 shows a sectional view of a backing element 22e of a backing unit 16e of the abrasion tool device 12e, and of a protective element 84e of a protective unit 80e of the abrasion tool device 12e, in particular a sectional plane comprising a common central axis 96e of the backing element 22e and of the protective element 84e. In FIG. 7, the backing element 22e and the protective element 84e are shown arranged on each other. The abrasion tool device 12e comprises the backing unit 16e and a fastening unit 18e (not shown in FIG. 7) for detachably fastening an abrasive, in particular an abrasive paper or an abrasive fleece, to the backing unit 16e. The backing unit 16e comprises the backing element 22e, on which the abrasive can be arranged via the fastening unit 18e. The backing element 22e is made from a material having a melting temperature of more than 180° C., preferably more than 200° C., particularly preferably more than 220° C., very particularly preferably more than 240° C., and particularly advantageously preferably more than 250° C. The abrasion tool device 12e comprises the protective unit 80e, which is arranged on the backing element 22e and is designed, in particular during an abrasion operation, to protect a workpiece, the backing element 22e or an external unit, in particular from damage, and/or to damp an impact, in particular direct impact, of the backing element 22e on the workpiece or on the external unit. The abrasion tool device 12e represented in FIGS. 7 and 8 is of a design that is at least substantially similar to the abrasion tool device 12a described in the description of FIGS. 1 to 3, such that reference may be made, at least substantially, to the description of FIGS. 1 to 3 with respect to a design of the abrasion tool device 12e represented in FIGS. 7 and 8. In contrast to the abrasion tool device 12a described in the description of FIGS. 1 to 3, the protective element 84e of the protective unit 80e of the abrasion tool device 12e represented in FIGS. 7 and 8 has a melting temperature of more than 220° C., preferably more than 240° C., and more preferably more than 260° C. In particular, the protective unit 80e is composed of the protective element 84e. It is also conceivable, however, for the protective unit 80e to comprise more than one protective element 84e, each arranged on the backing element 22e. The protective element 84e, as viewed along a central axis 96e of the backing element 22e and/or of the protective element 84e, has an outer edge 98e, which has a greater minimum distance 100e from an axis of motion 26e and/or from the central axis 96e of the backing element 22e and/or of the protective element 84e than has an outer edge 102e of the backing element 22e. The central axis 96e of the backing element 22e and/or of the protective element 84e, as viewed in a plane of main extent 103e of the backing element 22e, comprises a geometric mid-point of a shape of the backing element 22e and/or of the protective element 84e. Preferably, the central axis 96e of the backing element 22e and/or of the protective element 84e is arranged at least substantially perpendicularly to the plane of main extent 103e of the backing element 22e. Preferably, the outer edge 102e of the backing element 22e, as viewed in the plane of main extent 103e of the backing element 22e, is part of an outer contour of the backing element 22e.

[0052] The protective element 84e is arranged on an outer side of the backing element 22e that faces away from the abrasive and/or a contact face 34e of the backing element 22e. The protective element 84e bears against the outer edge 102e of the backing element 22e. Preferably, the protective element 84e is arranged at a distance from the contact face 34e of the backing element 22e and/or from the abrasive. The backing element 22e has an outer face 114e that, on a side of the outer face 114e of the backing element 22e that faces away from the contact face 34e of the backing element 22e, is at least partially covered by the protective element 84e. The outer face 114e of the backing element 22e is aligned at least substantially perpendicularly to the plane of main extent 103e of the backing element 22e, and is arranged around the axis of motion 26e and/or the central axis 96e of the backing element 22e and/or of the protective element 84e. In particular, the outer face 114e of the backing element 22e realizes the outer edge 102e of the backing element 22e. The outer edge 102e of the backing element 22e is arranged within the plane of main extent 103e of the backing element 22e, and extends at least substantially entirely around the axis of motion 26e and/or the central axis 96e of the backing element 22e and/or of the protective element 84e. The outer face 114e of the backing element 22e delimits the contact face 34e of the backing element 22e via a side edge of the outer face 114e of the backing element 22e. The protective element 84e is arranged on the backing element 22e, along the outer edge 102e and/or the outer face 114e of the backing element 22e, at least substantially entirely around the axis of motion 26e and/or the central axis 96e. The protective element 84e encompasses the outer edge 102e of the backing element 22e at least substantially perpendicularly to the central axis 96e of the backing element 22e. The protective element 84e extends at least mainly over a maximum thickness 50e of the backing element 22e, in particular at the outer edge 102e of the backing element 22e. Preferably, the protective element 84e, in particular as viewed perpendicularly to the plane of main extent 103e of the backing element 22e, has a maximum thickness 86e of in particular at least 0.3 mm, preferably at least 0.5 mm, more preferably at least 0.8 mm, and particularly preferably at least 1 mm. Preferably, a minimum thickness 86e of the protective element 84e is at most 1 cm, preferably at most 0.5 mm and preferably at most 3 mm. Preferably, the maximum thickness 86e of the protective element 84e is less than the maximum thickness 50e of the backing element 22e. Preferably, the protective unit 80e, in particular the protective element 84e, is at least mainly, in particular at least substantially entirely, made from the material having a melting temperature that in particular is less than 350° C., preferably less than 300° C., particularly preferably less than 280° C., and very particularly preferably less than 260° C. The protective unit 80e, in particular the protective element 84e, is made from a glass-fiber-reinforced plastic. However, other designs of the protective unit 80e, in particular of the protective element 84e, are also conceivable, for example made from a thermoplastic or a polyamide, and/or from a rubber, from a partially aromatic polyamide, in particular of the type Grivory GV-5H, or from polyphenylene sulfide Preferably, the protective element 84e is made from a material that has a lesser stiffness than the backing element 22e, in particular the material from which the backing element 22e is made. It is conceivable for the protective unit 80e, in particular the protective element 84e, to be realized so as to be replaceable, in particular the protective unit 80e, in particular the protective element 84e, being separable from the backing element 22e without leaving any residue and/or non-destructively. Alternatively, it is conceivable for the protective unit 80e to comprise more than one protective element 84e, arranged on the backing element 22e, along the outer edge 102e and/or the outer face 114e of the backing element 22e. In particular in a design in which the protective unit 80e has more than one protective element 84e, it is conceivable for the protective elements 84e of the protective unit 80e to only partially cover the outer edge 102e and/or the outer face 114e of the backing element 22e, for example in a region of corners of a basic shape of the backing element 22e.

[0053] The protective element 84e has two outer faces 112e, 113e, which, in particular in at least one state in which the protective element 84e is arranged on the backing element 22e, as viewed in a sectional plane comprising the central axis 96e of the backing element 22e and/or of the protective element 84e, are at least substantially inclined relative to the central axis 96e of the backing element 22e and/or of the protective element 84e. The outer edge 98e of the protective element 84e delimits the outer faces 112e, 113e of the protective element 84e at least partially, in particular at least substantially entirely, as viewed around the central axis 96e of the backing element 22e and/or of the protective element 84e. Preferably, a plane of main extent of the protective element 84e, in at least one state in which the protective element 84e is arranged on the backing element 22e, is arranged at least substantially parallel to the plane of main extent 103e of the backing element 22e. The outer faces 112e, 113e of the protective element 84e have, at least substantially perpendicularly to the central axis 96e of the backing element 22e and/or of the protective element 84e, in each case a greater maximum distance 104e from the central axis 96e of the backing element 22e and/or of the protective element 84e than has the outer edge 102e of the backing element 22e. The protective element 84e has a connection direction 116e, the protective element 84e being designed to be arranged on, in particular fastened to, the backing element 22e by a movement in the connection direction 116e. The connection direction 116e is arranged at least substantially parallel to the central axis 96e of the backing element 22e and/or of the protective element 84e. The connection direction 116e is at least substantially perpendicular to the plane of main extent of the protective element 84e. The two outer faces 112e, 113e of the protective element 84e each have an angle 118e, 120e, relative to the central axis 96e of the backing element 22e and/or of the protective element 84e, from an angular range in particular of from 8° to 92°, preferably from 15° to 85°, and more preferably from 20° to 80°. One outer face 112e of the two outer faces 112e, 113e of the protective element 84e has an angle 118e, relative to the central axis 96e of the backing element 22e and/or of the protective element 84e, that is spanned in the connection direction 116e by a, in particular virtual, point of intersection 122e of a straight line, that extends at least substantially parallel to the central axis 96e and through the outer edge 98e of the protective element 84e, and by the outer face 112e of the protective element 84e. A further outer face 113e of the two outer faces 112e, 113e of the protective element 84e has an angle 120e, relative to the central axis 96e of the backing element 22e and/or of the protective element 84e, that is spanned contrary to the connection direction 116e by a, in particular virtual, point of intersection 124e of the straight line, that extends at least substantially parallel to the central axis 96e and through the outer edge 98e of the protective element 84e, and by the further outer face 113e of the protective element 84e. Preferably, the further outer face 113e of the protective element 84e realizes a chamfer on an outer edge of the protective element 84e that faces away from the contact face 34e. In particular, the outer face 112e of the protective element 84e realizes a chamfer on an outer edge of the protective element 84e that faces toward the contact face 34e. The further outer face 113e of the protective element 84e is arranged on a side of the protective element 84e that faces away from the backing element 22e, in particular the contact face 34e. The outer face 112e of the protective element 84e, as viewed at least substantially perpendicularly to the central axis 96e of the backing element 22e and/or of the protective element 84e, realizes a contour 126e of the protective element 84e, in particular delimiting the protective element 84e in the connection direction 116e. Preferably, the outer face 112e and the further outer face 113e of the protective element 84e are arranged at a distance from each other on the protective element 84e. It is also conceivable, however, for the outer face 112e and the further outer face 113e of the protective element 84e to at least partially delimit each other, in particular on one side in each case. Preferably, the two outer faces 112e, 113e, in particular the outer face 112e and the further outer face 113e, of the protective element 84e are realized with a flat surface. It is also conceivable, however, for the outer face 112e and/or the further outer face 113e of the protective element 84e to be curved.

[0054] The protective element 84e extends, at least substantially perpendicularly to the central axis 96e of the backing element 22e and/or of the protective element 84e, at least substantially entirely over a maximum extent 106e of the backing element 22e (see also FIG. 8). The protective element 84e surrounds the backing element 22e at least substantially entirely, in particular when the protective unit 80e is in as assembled state, as viewed along the central axis 96e of the backing element 22e and/or of the protective element 84e. The protective element 84e, in particular when the protective unit 80e is in an assembled state and/or is arranged on the backing element 22e, extends at least mainly, in particular at least substantially entirely, along an, in particular upper, outer edge 102e of the backing element 22e, the protective element 84e in particular bearing against the outer edge 102e and the outer face 114 of the backing element 22e. In particular in the alternative design in which the protective unit 80e comprises more than one protective element 84e, the protective elements 84e each bear against the outer edge 102e of the backing element 22e and are in particular arranged at a distance from each another. It is also conceivable, however, for the protective elements 84e to be arranged against and/or connected to each other for arrangement on and/or fastening to the backing element 22e.

[0055] FIG. 8 shows a perspective view of the backing element 22e and of the protective element 84e, the protective element 84e being in particular arranged on the backing element 22e. The backing element 22e realizes three holding means 108e, which are designed for holding the protective element 84e of the protective unit 80e on the backing element 22e in a force-fitting and/or form-fitting manner. However, designs of the backing element 22e with a number of holding means 108e other than three are also conceivable. The backing element 22e and the holding means 108e are realized as a single part. The holding means 108e are realized as recesses. In particular, the protective element 84e is realized so as to correspond to the backing element 22e and the holding means 108e, and is designed to be connected to the backing element 22e in a force-fitting and/or form-fitting manner, in particular via the holding means 108e.

[0056] The protective element 84e realizes three counter-holding means 128e, which are designed to act in combination with the holding means 108e for the purpose of connecting the protective element 84e and the backing element 22e in a force-fitting and/or form-fitting manner, in particular when the protective element 84e is arranged on the backing element 22e. Particularly preferably, the protective element 84e and the counter-holding means 128e are realized as a single part. The counter-holding means 128e are each realized and arranged so as to correspond to one of the holding means 108e. The counter-holding means 128e are realized as extensions, which are intended in particular to engage in the holding means 108e when the protective element 84e is arranged on the backing element 22e. However, other designs of the backing element 22e, in particular of the holding means 108e, and/or of the protective element 84e, in particular of the counter-holding means 128e, are also conceivable. For example, it is conceivable for the counter-holding means 128e to be realized as recesses that are designed to act in combination with holding means 108e realized as pins or other types of extensions. The holding means 108e, in particular as viewed from the central axis 96e of the backing element 22e, are each arranged in an outer peripheral region of the backing element 22e, which in particular adjoins the outer edge 102e of the backing element 22e. The counter-holding means 128e, in particular as viewed from the central axis 96e of the protective element 84e, are each arranged in an outer peripheral region of the protective element 84e. The holding means 108e are arranged on a side of the backing element 22e that faces away from the contact face 34e, in particular the contact face 34e in FIG. 8 being arranged on a side of the backing element 22e that faces away from the image plane. The holding means 108e realized as recesses extend, from the side of the backing element 22e that faces away from the contact face 34e, in the connection direction 116e and/or toward the contact face 34e, the contact face 34e being in particular realized at a distance from the holding means 108e. It is also conceivable, however, for the holding means 108e, realized as recesses, to extend over the entire thickness 50e of the backing element 22e. The counter-holding means 128e are arranged on a side of the protective element 84e that is arranged in the connection direction 116e. The holding means 108e are arranged with an evenly distribution around the central axis 96e of the backing element 22e. The counter-holding means 128e are arranged with an even distribution around the central axis 96e of the protective element 84e.

[0057] FIG. 9 shows a detail of another, further design of an abrasion tool device 12f as part of an abrasion tool system 10f, in cross-section. The abrasion tool device 12f comprises a backing unit 16f and a fastening unit 18f for detachably fastening an abrasive 20f of the abrasion tool system 10f, in particular realized as an abrasive paper or abrasive fleece, to the backing unit 16f. The backing unit 16f comprises a backing element 22f, as a support plate, on which the abrasive 20f can be arranged via the fastening unit 18f. The backing element 22f is made from a material having a melting temperature of more than 180° C., preferably more than 200° C., particularly preferably more than 220° C., very particularly preferably more than 240° C., and particularly advantageously preferably more than 250° C. The abrasion tool device 12f represented in FIG. 9 is of a design that is at least substantially similar to the abrasion tool device 12a described in the description of FIGS. 1 to 3, such that reference may be made, at least substantially, to the description of FIGS. 1 to 3 with respect to a design of the abrasion tool device 12a represented in FIG. 9. In contrast to the abrasion tool device 12a described in the description of FIGS. 1 to 3, the fastening unit 18f of the abrasion tool device 12f represented in FIG. 9 comprises an intermediate element 110f, which is designed to be arranged between the backing element 22f and the abrasive 20f so as to be removable and/or replaceable, in particular at least substantially non-destructively, at least substantially without use of tools, the intermediate element 110f being made from a material having a melting temperature of more than 180° C., preferably more than 200° C., particularly preferably more than 220° C., very particularly preferably more than 240° C., and particularly advantageously preferably more than 250° C. The fastening unit 18f comprises bonding agent 130f and two fastening element 132 that are realized as hook-and-loop fastenings, the two fastening elements 132f each being fastened to the intermediate element 110 in a materially bonded manner via the bonding agent 130f. The intermediate element 110f can be fastened to the backing element 22f and/or the abrasive 20f via the two fastening elements 132f. The abrasion tool device 12f has a heat transfer coating 42f arranged on an underside of the intermediate element 110f that faces toward the abrasive 20f. However, other designs of the abrasion tool device 12f are also conceivable, in particular in respect of an arrangement of the heat transfer coating 42f or without a heat transfer coating 42f. The intermediate element 110f is made from a metal, and is at least substantially plate-like. It is also conceivable, however, for the intermediate element 110f to be made from a plastic, in particular polyurethane. Particularly preferably, the intermediate element 110f is made from materials/a material other than a foam. Also conceivable, however, are designs of the intermediate element 110f in which the intermediate element 110f is made entirely, or at least partially, from a foam. The intermediate element 110f has a maximum thickness 134f that is preferably less than 3 mm, preferably less than 2 mm, and more preferably less than 1.5 mm. In particular, the maximum thickness 134f of the intermediate element 110f is at least 0.5 mm, preferably at least 0.8 mm, and more preferably at least mm. It is conceivable for the intermediate element 110f to comprise cut-outs or protuberances for optimized heat distribution away from the abrasive 20f (not shown in FIG. 9), which are arranged in particular at least partially on an underside of the intermediate element 110f that faces toward the abrasive 20f.

[0058] The intermediate element 110f has a seating face 136f designed for arrangement of the intermediate element 110f on the backing element 22f. In particular, the seating face 136f is arranged on a side of the intermediate element 110f that faces toward the backing element 22f, in particular when the abrasion tool device 12f is in an assembled state. Preferably, the seating face 136f, in particular as viewed along the central axis 96f of the backing element 22f, is at least substantially identical in shape to the contact face 34f of the backing element 22f. The intermediate element 110f comprises a contact face 138f designed for arrangement of the abrasive 20f on the intermediate element 110f. Preferably, the seating face 136f of the intermediate element 110f, in particular as viewed along a central axis of the intermediate element 110f that, in particular when the intermediate element 110f is arranged on the backing element 22f, comprises the central axis 96f of the backing element 22f, is at least substantially identical in shape to the abrasive 20f, in particular to a base surface of the abrasive 20f in a plane of main extent of the abrasive 20f It is conceivable for the contact face 138f and the seating face 136f of the intermediate element 110f to be at least substantially identical, or to differ, in design.

[0059] Preferably, it is conceivable for the contact face 138f and the seating face 136f of the intermediate element 110f to differ from each other in their basic geometric shape.

[0060] The abrasion tool device 12f, in particular the intermediate element 110f and the backing element 22f, is/are of a modular design, it being conceivable in particular for the abrasion tool device 12f and/or the abrasion tool system 10f to be operated with and without an intermediate element 110f. The intermediate element 110f is designed to adapt a contact face 34f of the backing element 22f to a shape of the abrasive 20f that may differ from a shape of the contact face 34f, in order to support the abrasive 20f. Preferably, the intermediate element 110f can be used to process a workpiece with differently shaped abrasives 20f, in particular without removing the backing element 22f. For example, without changing and/or removing the backing element 22f, a round abrasive 20f can be used for working a flat face of a workpiece by means of a round intermediate element 110f and/or, for working in a corner, an intermediate element 110f realized with at least one corner can be used with an angular abrasive 20f supported by the intermediate element 110f. The intermediate element 110f is designed to adapt a counterforce of the abrasion tool device 12f that counteracts a force transmitted from the workpiece, via the abrasive 20f, to the abrasion tool device 12f as work is being performed on a workpiece, in particular for the purpose of protecting the workpiece, the abrasive 20f and/or the abrasion tool device 12f, and/or for the purpose of protecting a user. For example, in the case of working on a softer surface such as, for example, wood, a lower counterforce is advantageous than, for example, in the case of working on metal, with the intermediate element 110f, which in particular has a lesser stiffness than the backing element 22f, being arranged between the backing element 22f and the abrasive 20f in the case of working on wood. In particular, it is conceivable for the abrasion tool device 12f, in the case of working on metal, to be used without the intermediate element 110f or with a further intermediate element, in particular made of a stiffer material than the intermediate element 110f.