Abstract
A machining tool, in particular to a rotating cutter machining tool, includes at least one cutting strand and at least one cutting strand-guiding unit. The machining tool also includes at least one cutting edge-guiding unit disposed on the cutting strand-guiding unit. The cutting edge-guiding unit has a maximum transverse extension that is equal to or greater than a maximum cutting width of the cutting strand.
Claims
1. A machining tool, comprising: at least one cutting strand. at least one cutting strand guide unit; and at least one cutting edge guide unit arrangeable on the cutting strand guide unit, the cutting edge guide unit having a maximum transverse extent that is equal to or greater than a maximum cutting width of the cutting strand.
2. The machining tool as claimed in claim 1, wherein the cutting edge guide unit has at least one fastening element configured for one or more of a positive and/or a non-positive fastening to the cutting strand guide unit.
3. The machining tool as claimed in claim 1, wherein the cutting edge guide unit has at least one cutting edge guide element that is movably mounted on the cutting strand guide unit.
4. The machining tool as claimed in claim 1, wherein the cutting edge guide unit (16c; 16d) has at least one stop element that, when viewed along at least one direction running at least substantially parallel to a cutting plane of the cutting strand, extends beyond the cutting strand.
5. The machining tool as claimed in claim 4, wherein the stop element is configured at least partially in one piece with a cutting edge guide element of the cutting edge guide unit.
6. The machining tool as claimed in claim 4, wherein the stop element is of resilient configuration.
7. A portable power tool system, comprising: at least one portable power tool. at least one machining tool including: at least one cutting strand, at least one cutting strand guide unit, and at least one cutting edge guide unit arrangeable on the cutting strand guide unit, the cutting edge guide unit having a maximum transverse extent that is equal to or greater than a maximum cutting width of the cutting strand; and at least one cutting edge guiding device including at least one guide element configured to interact with the cutting edge guide unit of the machining tool.
8. The portable power tool system as claimed in claim 7, wherein the guide element is configured as a guide rail having a guide geometry that varies along at least one direction.
9. The portable power tool system as claimed in claim 7, wherein the guide element comprises at least one maximum guide geometry extent that, when viewed along a direction running at least substantially parallel to a cutting plane of the cutting strand, is equal to or greater than a maximum longitudinal extent of a cutting edge guide element of the cutting edge guide unit.
10. The portable power tool system as claimed in claim 7, wherein the guide element comprises at least one guide groove into which the machining tool extends at least partially during machining of a workpiece.
11. The machining tool as claimed in claim 1, wherein the machining tool is configured as a rotating cutter machining tool.
Description
DRAWING
[0020] Further advantages emerge from the following drawing description. In the drawing, illustrative embodiments of the invention are represented. The drawing, the description and the claims contain numerous features in combination. The person skilled in the art will expediently view the features also individually and put them together them into sensible further combinations.
[0021] FIG. 1 shows a portable power tool system according to the invention, having a machining tool according to the invention in a state arranged on a portable power tool of the portable power tool system according to the invention, and having a cutting edge guiding device according to the invention, in a schematic representation,
[0022] FIG. 2 shows a detailed view of the machining tool according to the invention, in a schematic representation,
[0023] FIG. 3 shows a detailed view of the machining tool according to the invention in a state connected to the cutting edge guiding device, in a schematic representation,
[0024] FIG. 4 shows a sectional view of an alternative embodiment of a guide element of the portable power tool system according to the invention, in a schematic representation,
[0025] FIG. 5 shows a detailed view of an alternative portable power tool system according to the invention, in a schematic representation,
[0026] FIG. 6 shows a detailed view of a further alternative portable power tool system according to the invention, in a schematic representation,
[0027] FIG. 7 shows a detailed view of an alternative machining tool according to the invention of further alternative portable power tool system according to the invention, in a schematic representation,
[0028] FIG. 8 shows a detailed view of the alternative machining tool according to the invention in a state connected to a cutting edge guiding device of the further alternative portable power tool system according to the invention, in a schematic representation, and
[0029] FIG. 9 shows a sectional view of the alternative machining tool according to the invention, in a schematic representation.
DESCRIPTION OF THE ILLUSTRATIVE EMBODIMENTS
[0030] FIG. 1 shows a portable power tool system 24a having at least one portable power tool 26a, having at least one machining tool 10a, and having at least one cutting edge guiding device 28a, which latter comprises at least one guide element 30a designed to interact with a cutting edge guide unit 16a of the machining tool 10a. The portable power tool 26a has a coupling device 36a for a positive and/or non-positive coupling with the machining tool 10a. The coupling device 36a can in this case be configured as a bayonet catch and/or as another coupling device which appears sensible to a person skilled in the art.
[0031] Furthermore, the portable power tool 26a comprises at least one bearing unit 60a for supporting the portable power tool 26a on a surface of the workpiece 34a to be machined, wherein the workpiece 34a, for machining by means of the machining tool 10a, is arrangeable between the bearing unit 60a of the portable power tool 26a and a guide element 30a of the cutting edge guiding device 28a. The bearing unit 60a is configured as a sliding block or as a base plate of the portable power tool 26a. The bearing unit 60a can in this case comprise a coated sliding surface, by means of which the portable power tool 26a can slide on the surface of the workpiece 34a during a movement along a motional direction of the machining.
[0032] The portable power tool 26a further has a machine tool housing 38a, which encloses a drive unit 40a and a transmission unit 42a of the portable power tool 26a. The drive unit 40a and the transmission unit 42a are functionally connected to each other, in a manner which is already known to a person skilled in the art, for the generation of a drive torque transmissible to the machining tool 10a. The transmission unit 42a is configured as an angular gear. The drive unit 40a is configured as an electric motor unit. It is also conceivable, however, for the drive unit 40a and/or the transmission unit 42a to have another embodiment which appears sensible to a person skilled in the art. The drive unit 40a is designed to drive a cutting strand 12a of the machining tool 10a in at least one operating state at a cutting speed less than 6 m/s. In this case, the portable power tool 26a has at least one operating mode in which a driving of the cutting strand 12a in a cutting strand guide unit 14a of the machining tool 10a along a cutting direction of the cutting strand 12a at a cutting speed less than 6 m/s is enabled.
[0033] The cutting strand 12a is guided by means of the cutting strand guide unit 14a. To this end, the cutting strand guide unit 14a has at least one cutting strand guide groove, which extends in a cutting plane of the cutting strand 12a along an at least substantially total periphery of the cutting strand guide unit 14a. In this case, the cutting strand 12a is guided by means of marginal regions of the cutting strand guide unit 14a, which marginal regions delimit the cutting strand guide groove. It is also conceivable, however, for the cutting strand guide unit 14a to have another embodiment which appears sensible to a person skilled in the art, for the guidance of the cutting strand 12a, such as, for instance, a rib-like molding on the cutting strand guide unit 14a, which molding engages in a recess on the cutting strand 12a, etc. The cutting strand 12a, viewed in a plane running perpendicular to the cutting plane, is surrounded from three sides by the marginal regions which delimit the cutting strand guide groove. The cutting strand 12a is moved during operation rotatingly along the periphery in the cutting strand guide groove relative to the cutting strand guide unit 14a.
[0034] Furthermore, the machining tool 10a comprises at least the cutting edge guide unit 16a arrangeable on the cutting strand guide unit 14a and having a maximum transverse extent 44a which is equal to or greater than a maximum cutting width 62a of the cutting strand 12a (FIG. 2). The maximum cutting width 62a of the cutting strand 12a extends along a direction running substantially perpendicular to the cutting plane of the cutting strand 12a. In this case, the maximum cutting width 62a of the cutting strand 12a corresponds to a maximum spacing of two cutting edges of the cutting strand 12, viewed along a direction running at least substantially perpendicular to the cutting plane of the cutting strand 12a. The maximum transverse extent 44a of the cutting edge guide unit 16a extends likewise along the direction running at least substantially perpendicular to the cutting plane of the cutting strand 12a. In this case, the cutting edge guide unit 16a comprises at least one cutting edge guide element 20a, which is disposed on the cutting strand guide unit 14a. The cutting edge guide element 20a is disposed on a side wall element 46a of the cutting strand guide unit 14a. The cutting edge guide unit 16a further has a further cutting edge guide element 48a. The further cutting edge guide element 48a is disposed on a further side wall element 50a of the cutting strand guide unit 14a. The side wall element 46a and the further side wall element 50a are disposed on sides of the cutting strand guide unit 14a which are facing away from each other. In this case, between the side wall element 46a and the further side wall element 50a is disposed a middle subcomponent 52a of the cutting strand guide unit 14a. The side wall element 46a and the further side wall element 50a are fixed to the middle subcomponent 52a by means of a positive, a non-positive and/or an integrally bonded connection.
[0035] Furthermore, the cutting edge guide unit 16a has at least one fastening element 18a for a positive and/or non-positive fastening of the cutting edge guide unit 16a to the cutting strand guide unit 14a (FIG. 2). In this case, the fastening element 18a is provided as a threaded bolt. The fastening element 18a is designed to fasten the cutting edge guide element 20a and/or the further cutting edge guide element 48a to the cutting strand guide unit 14a. The fastening element 18a has in this case a maximum extent which is equal to or less than the maximum transverse extent 44 of the cutting edge guide unit 16a. The fastening element 18a can be screwed into a threaded recess of the middle subcomponent 52a and/or of the side wall element 46a, or the fastening element 18a can extend through a recess through the cutting strand guide unit 14a and be screwed in place by means of a further fastening element (not represented in detail here), such as, for instance, a threaded nut disposed on the cutting edge guide element 20a or on the further cutting edge guide element 48a. It is also conceivable, however, for the cutting edge guide element 20a and/or the further cutting edge guide element 48a to be configured respectively in one piece with the respective side wall element 46a, 50a of the cutting strand guide unit 14a and to respectively form a thickening of the respective side wall element 46a, 50a. In addition, it is conceivable for the cutting edge guide element 20a and the further cutting edge guide element 48a to be configured in one piece.
[0036] In an alternative embodiment (not represented here), it is also conceivable for the cutting edge guide element 20a and the further cutting edge guide element 48a to be arranged movably on the cutting strand guide unit 14a. In this case, the fastening element 18a could extend through an elongate recess disposed in the cutting strand guide unit 14a. As a result of a release of the fastening element 18a, a translatorily movable arrangement of the cutting edge guide element 20a and of the further cutting edge guide element 48a could hence be enabled. Other embodiments of the cutting edge guide unit 16a which appear sensible to a person skilled in the art, for a movable mounting of the cutting edge guide element 20a and of the further cutting edge guide element 48a, are likewise conceivable.
[0037] For guidance of the machining tool 10a as a cut is made in a workpiece 34a, the portable power tool system 24a has the cutting edge guiding device 28a. The cutting edge guiding device 28a is thus configured as a cutting strand tool guiding device. In this case, the cutting edge guiding device 28a comprises at least one guide element 30a for guidance of the machining tool 10a during a movement along a cutting edge. To this end, the guide element 30a comprises at least one guide groove 32a, into which the machining tool 10a during machining of a workpiece 34a extends at least partially (FIG. 3). The guide element 30a, in particular the guide groove 32a, in this case comprises at least one maximum guide geometry extent 68a, which, viewed along a direction running at least substantially parallel to a cutting plane of the cutting strand 12a, is equal to or greater than a maximum longitudinal extent 70a of the cutting edge guide element 20a of the cutting edge guide unit 16a (FIG. 3). The further cutting edge guide element 20a has a maximum longitudinal extent which, in terms of a linear dimension, is equal to a maximum longitudinal extent of the further cutting edge guide element 48a. The cutting edge guide element 20a and the further cutting edge guide element 48a, during guidance by means of the cutting edge guiding device 28a, is thus disposed within the guide groove 32a.
[0038] The guide element 30a is configured as a guide rail. In this case, the guide element 30a has at least one workpiece support surface 54a, on which the workpiece 34a is arrangeable for machining by means of the machining tool 10a. The guide element 30a can be removably arranged on a work plate 56a of a machining table 58a of the cutting edge guiding device 28a. In this case, the guide element 30a is removably recessed in the work plate 56a, wherein a surface of the work plate 56a is arranged at least substantially flush with the workpiece support surface 54a. It is also conceivable, however, for the surface of the work plate 56a to be arranged relatively distant from the workpiece support surface 54a.
[0039] The guide element 30a comprises, furthermore, at least one constraining force transmission surface, which is designed to exert on the machining tool 10a, for guidance of the machining tool 10a, at least one constraining force along at least one direction running substantially transversely to the motional direction of the machining. To this end, the cutting edge guide unit 16a, in particular the cutting edge guide element 20a and/or the further cutting edge guide element 48a, during a movement along the motional direction of the machining, bears against the constraining force transmission surface. In addition, the guide element 30a has at least one further constraining force transmission surface, which is designed to exert on the machining tool 10a, for guidance of this same, at least one constraining force along at least one further direction running at least substantially transversely to the motional direction of the machining. The constraining force transmission surface and the further constraining force transmission surface extend in this case at least substantially in parallel. The constraining force transmission surface and the further constraining force transmission surface delimit the guide groove 32a. In this case, the guide groove 32a has at least in one section a design corresponding to an external geometry of the machining tool 10a, in particular to the external geometry of the cutting edge guide unit 16a. Further embodiments of the cutting edge guide unit 16a and/or of the cutting edge guiding device 28a, which embodiments appear sensible to a person skilled in the art, are likewise conceivable.
[0040] FIG. 4 shows a sectional view of an alternative embodiment of a guide element 30a′ of the portable power tool system 24a according to the invention. The guide element 30a′ is configured as a guide rail, which has a guide geometry that varies along at least one direction. In this case, the guide element 30a′ has a guide groove 32a′, which, viewed along a direction running at least substantially perpendicular to a workpiece support surface 54a′ of the guide element 30a′, has an incrementally varying distance between a forced guidance surface and a further forced guidance surface of the guide element 30a′. The forced guidance surface and the further forced guidance surface delimit the guide groove 32a′. Thus the guide element 30a′ has an incrementally varying guide groove geometry. In this case, it is also conceivable for the guide element 30a′, in particular the guide groove 32a′, to have another guide geometry that appears sensible to a person skilled in the art and varies along at least one direction, such as, for instance, a lead-in taper, a guiding step, etc.
[0041] Furthermore, the guide element 30a′ alternatively or additionally comprises at least one wear element 64a′, which is disposed in the region of the varying guide geometry or on the forced guidance surface and/or on the further forced guidance surface. Thus the guide element 30a′ alternatively or additionally comprises at least two wear elements 64a′, 66a′. The wear elements 64a′, 66a′ are disposed on two mutually facing sides of the guide groove. It is also conceivable, however, for the guide element 30a′ alternatively or additionally to have a number of wear elements 64a′, 66a′ other than two.
[0042] In FIGS. 5 to 9, alternative illustrative embodiments are represented. Substantially constant components, features and functions are basically numbered with the same reference symbols. In order to differentiate between the illustrative embodiments, letters a to d are added to the reference symbols of the illustrative embodiments. The following description substantially confines itself to the differences from the first illustrative embodiment described in FIGS. 1 to 4, wherein, in respect of constant components, features and functions, reference can be made to the description of the first illustrative embodiment in FIGS. 1 to 4.
[0043] FIG. 5 shows an alternative portable power tool system 24b, which comprises a portable power tool (not represented in detail here), at least one machining tool 10b and at least one cutting edge guiding device 28b, which latter has at least one guide element 30b designed to interact with a cutting edge guide unit 16b of the machining tool 10b. The portable power tool of the alternative portable power tool system 24b has an at least substantially analogous design in comparison to the portable power tool 26a represented in FIG. 1. The machining tool 10b comprises at least one cutting strand 12b and at least one cutting strand guide unit 14b. In addition, the machining tool 10b comprises at least the cutting edge guide unit 16b arrangeable on the cutting strand guide unit 14b and having a maximum transverse extent 44b which is equal to or greater than a maximum cutting width 62b of the cutting strand 12b.
[0044] Unlike the cutting edge guiding device 28a described in the description of FIGS. 1 to 4, the cutting edge guiding device 28b of the alternative portable power tool system 24b has at least one guide element 30b, comprising a workpiece support surface 54b by means of which the guide element 30b can be placed on a workpiece 34b. The guide element 30b is configured as a guide rail, comprising a guide groove 32b into which the machining tool 10b during machining of the workpiece 34b extends at least partially. In this case, the machining tool 10b extends, for machining of the workpiece 34b, at least partially through the guide element 30b. The machining tool 10b of the alternative portable power tool system 24b has an at least substantially analogous design to the machining tool 10a described in the description of FIGS. 1 to 4. Thus, in terms of further functions and features of the machining tool 10b and an interaction of the machining tool 10b and the cutting edge guiding device 28b, reference may be made to the description of FIGS. 1 to 4.
[0045] FIG. 6 shows a further alternative portable power tool system 24c, which comprises a portable power tool 26c, at least one machining tool 10c and at least one cutting edge guiding device 28c, which latter has at least one guide element 30c designed to interact with a cutting edge guide unit 16c of the machining tool 10c. The portable power tool 26c of the further alternative portable power tool system 24c has an at least substantially analogous design in comparison to the portable power tool 26a represented in FIG. 1. The machining tool 10c comprises at least one cutting strand 12c and at least one cutting strand guide unit 14c. In addition, the machining tool 10c comprises at least the cutting edge guide unit 16c arrangeable on the cutting strand guide unit 14c and having a maximum transverse extent 44c which is equal to or greater than a maximum cutting width 62c of the cutting strand 12c.
[0046] Unlike the machining tool 10a described in the description of FIGS. 1 to 4, the machining tool 10c of the alternative portable power tool system 24c comprises the cutting edge guide unit 16c, which has at least one cutting edge guide element 20c, movably mounted on the cutting strand guide unit 14c of the machining tool 10c. In this case, the cutting edge guide element 20c is mounted on the cutting strand guide unit 14c such that it is at least partially translatorily movable along a longitudinal axis of the cutting strand guide unit 14c. In a state disposed on the cutting strand guide unit 14c, the cutting edge guide element 20c has an oval design. In this case, the cutting edge guide element 20c is fastened with an arm to the cutting strand guide unit 14c by means of a fastening element 18c of the cutting edge guide unit 16c. A further arm of the cutting edge guide element 20c is disposed in a translatorily movable manner on the cutting strand guide unit 14c. The arm and the further arm are in this case configured in one piece with each other. As a result of a translatory movement of the further arm relative to the arm fastened to the cutting strand guide unit 14c, a deformation of the cutting edge guide element 20c takes place. In this case, the cutting edge guide element 20c is of resilient configuration. Thus, by means of the cutting edge guide element 20c, a spring force can be generated, which spring force pressurizes the workpiece 34c, starting from the cutting edge guide element 20c, in the direction of a support unit 60c of the portable power tool 26c. The cutting edge guide unit 16c further comprises a further cutting edge guide element (not represented here), which has an at least substantially analogous design to the cutting edge guide element 20c. In addition, the further cutting edge guide element is disposed on a side of the cutting strand guide unit 14c which is facing away from the cutting edge guide element 20c.
[0047] Furthermore, the cutting edge guide unit 16c has at least one stop element 22c, which, viewed along a direction running at least substantially parallel to a cutting plane of a cutting strand 12c of the machining tool 10c, extends beyond the cutting strand 12c. The stop element 22c is in this case configured at least partially in one piece with the cutting edge guide element 20c of the cutting edge guide unit 16c. The stop element 22c is thus of resilient configuration. In terms of further functions and features of the machining tool 10c and an interaction of the machining tool 10c and the cutting edge guiding device 28c, reference may be made to the description of FIGS. 1 to 4.
[0048] FIGS. 7 to 9 show a further alternative portable power tool system 24d, which comprises a portable power tool (not represented in detail here), at least one machining tool 10d and at least one cutting edge guiding device 28d, which latter has at least one guide element 30d designed to interact with a cutting edge guide unit 16d of the machining tool 10d (FIG. 8).
[0049] The portable power tool of the further alternative portable power tool system 24d has an at least substantially analogous design in comparison to the portable power tool 26a represented in FIG. 1. The machining tool 10d comprises at least one cutting strand 12d and at least one cutting strand guide unit 14d. In addition, the machining tool 10d comprises at least the cutting edge guide unit 16d arrangeable on the cutting strand guide unit 14d and having a maximum transverse extent 44d which is equal to or greater than a maximum cutting width 62d of the cutting strand 12d (FIG. 9).
[0050] Furthermore, the cutting edge guide unit 16d has at least one stop element 22d, which, viewed along at least one direction running at least substantially parallel to a cutting plane of the cutting strand 12d, extends beyond the cutting strand 12d. In this case, the stop element 22d extends along at least two directions running at least substantially perpendicular to each other, which directions run at least substantially parallel to a cutting plane of the cutting strand 12d, beyond the cutting strand 12d (FIGS. 8 and 9). The stop element 22d is configured at least partially in one piece with a cutting edge guide element 20d of the cutting edge guide unit 16d. The cutting edge guide element 20d can in this case be movably mounted on the cutting strand guide unit 14d. In terms of further functions and features of the machining tool 10d and an interaction of the machining tool 10d and the cutting edge guiding device 28d, reference may be made to the description of FIGS. 1 to 4.
