Support Plate

Abstract

A support plate for a flexible tool that is to be rotated for surface fine machining by grinding or polishing has a plate body with a bottom side that is provided with a circumferentially extending circular contact surface for the flexible tool. A fixation device is arranged at the bottom side and detachably fixes the flexible tool to the contact surface. The plate body has a top side with a drive connector that is axially oriented in a direction of an axis of rotation of the support plate and frictionally connects the support plate to a drive. One or more fatigue markings are provided on or in the top side of the support plate.

Claims

1. A support plate for a flexible tool configured to be rotated for surface fine machining by grinding or polishing, the support plate comprising: a plate body comprising a bottom side comprising a circumferentially extending circular contact surface configured to accommodate the flexible tool; a fixation device arranged at the bottom side and configured to detachably fix the flexible tool at the contact surface; the plate body comprising a top side comprising a drive connector axially oriented in a direction of an axis of rotation of the support plate and configured to frictionally connect the support plate to a drive; one or more fatigue markings provided on or in the top side of the support plate.

2. The support plate according to claim 1, wherein the fatigue markings are recesses in and/or elevations on the top side of the plate body, wherein the recesses and/or elevations are configured to be felt by an operator.

3. The support plate according to claim 2, wherein a totality of the fatigue markings have a center of gravity located on the axis of rotation of the support plate.

4. The support plate according to claim 1, wherein the fatigue markings, in a view from above onto the top side of the support plate, are arranged inside a circular ring, wherein the circular ring comprises an outer radius corresponding to a radius of the support plate and further comprises an inner radius that is smaller by 10% than the outer radius.

5. The support plate according to claim 4, wherein the inner radius is smaller by 8% than the outer radius.

6. The support plate according to claim 1, wherein the support plate is free of tools for grinding or polishing that are non-detachably connected to the support plate.

Description

BRIEF DESCRIPTION OF THE DRAWING

[0012] FIG. 1 shows a support plate according to the invention in a plan view from

[0013] FIG. 2 shows the support plate of FIG. 1 in cross section along the section line II-II in FIG. 1.

[0014] FIG. 3 shows a further support plate according to the invention in a plan view from above.

[0015] FIG. 4 shows the support plate of FIG. 3 in cross section along the section line IV-IV of FIG. 3.

DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0016] In the following, elements of the invention that are acting in the same way are provided with the same reference character, should this be expedient. The features of the invention disclosed in the following, each individually or in any combination with each other, can be subject matter of the invention.

[0017] FIGS. 1 to 4 show support plates 2 according to the invention for rotating flexible tools 4 for surface fine machining such as grinding or polishing. The tools 4 are illustrated in FIGS. 2 and 4. The support plates 2 comprise a plate body 2a with a bottom side, indicated by arrow 6, provided with a circumferentially extending circular contact surface 8, respectively. In the meaning of the invention, circumferentially extending in a circular shape means that the contact surface 8 in a plan view from below has a circumferential outer contour that is circular.

[0018] At the bottom side, the plate body 2a of the support plates 2 comprise a fixation device 10 that is provided for detachable fixation of the tool 4 at the contact surface 8. In the embodiment according to FIG. 2, the fixation device 10 is a clamping plate, wherein the tool 4 is clamped between this clamping plate 10 and the plate body 2a of the support plate 2 for detachable fixation. In the embodiment according to FIG. 4, the fixation device 10 is a hook and loop fastening system that interacts with a matching counter element provided at the tool 4.

[0019] The support plates 2 are provided at their top side 12 with an axially oriented drive connector 14 for frictional connection of the respective support plate 2 with a drive. The drive is not illustrated in the Figures and is not part of the invention. In the embodiments, a plurality of fatigue markings 16 are provided on or in the top side 12 of the support plate 2, respectively. The totality of the fatigue markings 16 has a center of gravity 18 that is located on the axis of rotation 20 of the respective support plate 2.

[0020] The fatigue markings 16 in a view from above onto the respective support plate 2, as in the perspective views according to FIG. 1 and FIG. 3, for example, are located inside a circular ring 22 whose outer radius 24 corresponds to the radius of the support plate 2 and whose inner radius 26 is smaller by 10%, in particular by 8%, than the outer radius 24.

[0021] The specification incorporates by reference the entire disclosure of German priority document 20 2020 103 506.1 having a filing date of Jun. 18, 2020.

[0022] While specific embodiments of the invention have been shown and described in detail to illustrate the inventive principles, it will be understood that the invention may be embodied otherwise without departing from such principles.

LIST OF REFERENCE CHARACTERS

[0023] 2 support plate [0024] 2a plate body [0025] 4 tools [0026] 6 bottom side [0027] 8 contact surface [0028] 10 fixation device [0029] 12 topside [0030] 14 drive connector [0031] 16 fatigue markings [0032] 18 center of gravity [0033] 20 rotation axis of the support plate [0034] 22 circular ring [0035] 24 outer radius [0036] 26 inner radius