Tool device

Patent metadata

Field	Value
Publication number	US-10065248-B2
Application number	US-201414909204-A
Country	US
Kind code	B2
Filing date	Jul 25, 2014
Priority date	Aug 1, 2013
Publication date	Sep 4, 2018
Grant date	Sep 4, 2018

Abstract

The invention relates to a tool device which is suitable for use with a machine tool, in particular a hand guided machine tool, having a driving device moving, in particular in an oscillating manner, around a driving axis. The tool device has an attachment device which allows it to be fastened on a machine tool such that its driving axis and an axis of rotation of the tool substantially coincide. The attachment device, for absorbing the driving force, has at least two driving area regions, which are spaced apart from said tool axis of rotation and each has a plurality of surface points. The tangent planes to said surface-area points are inclined in regard to an axial plane, which encloses the tool axis of rotation. Furthermore, said tangent planes are inclined regard to a radial plane which extends perpendicularly to the tool axis of rotation. This means that the torque introduced into the tool device by the machine tool, via the driving device, is reliably absorbed.

First claim

What is claimed is:

1. A tool device, which is suitable for use with a machine tool having a driving device moving around a driving axis, the tool device having an attachment device by which the tool device is arranged to be fastened to a machine tool in such a manner that the driving axis and a tool axis of rotation are substantially coincident,
wherein, for receiving a driving force, the attachment device comprises at least two driving area regions each having a plurality of surface points and which are spaced apart to the tool axis of rotation,
wherein tangent planes are inclined on the surface points in regard to an axial plane, which includes the tool axis of rotation,
wherein the tangent planes are inclined in regard to a radial plane, which extends perpendicular to the tool axis of rotation,
wherein the attachment device comprises a side wall,
wherein the side wall extends radially spaced from the tool axis of rotation,
the side wall extends between a first upper boundary plane and a second lower boundary plane, and
the side wall comprises the driving area regions.

2. The tool device according to claim 1 , wherein at least one of the driving area regions is, at least in sections, substantially planar.

3. The tool device according to claim 1 , wherein at least one of the driving area regions is, at least in sections, curved.

4. The tool device according to claim 1 , wherein
the tool device comprises in a region of the attachment device at least one upper boundary plane and at least one lower boundary plane,
wherein the upper and lower boundary planes are disposed substantially perpendicular to said tool axis of rotation,
wherein the upper and lower boundary planes are spaced apart from each other, and
wherein each of the driving area regions is arranged between one of the at least one upper boundary plane and one of the at least one lower boundary plane.

5. The tool device according to claim 4 , wherein a plurality of the driving areas regions extend between a single upper boundary plane and a single lower boundary plane.

6. The tool device according to claim 1 , wherein
the tool device has a wall thickness of substantially t,
wherein the first upper boundary plane and the second lower boundary plane are spaced apart from each other by a distance T, and
wherein the distance T is greater than 1 times t and is smaller than 20 times t.

7. The tool device according to claim 1 , wherein
the tool device has a plurality of driving area regions, which are arranged rotationally symmetrical around the tool axis of rotation.

8. The tool device according to claim 1 , wherein
at least two of the driving area regions are arranged symmetrically to a plane of symmetry,
wherein the tool axis of rotation is located in the plane of symmetry.

9. The tool device according to claim 1 , wherein the side wall has an average wall thickness (t 1 ), which is greater than or equal to 0.2 mm and less than or equal to 4 mm.

10. The tool device according to claim 1 , wherein the side wall extends substantially radially closed around the tool axis of rotation.

11. The tool device according to claim 1 , wherein
the attachment device comprises a cover area section,
wherein the cover area section is directly or indirectly connected to at least one of the driving area regions, and
wherein the cover area section extends in a direction which has at least one component perpendicular to the tool axis of rotation.

12. The tool device according to claim 11 , wherein the cover area section is disposed substantially in a region of the first upper boundary planes.

13. The tool device according to claim 11 , wherein the cover area section extends radially towards the tool axis of rotation, and the cover area section has at least one recess.

14. The tool device according to claim 13 , wherein the recess or several of the recesses are arranged substantially in a region of the tool axis of rotation.

15. The tool device according to claim 13 , wherein one or several of the recesses are arranged rotationally symmetrically around the tool axis of rotation.

16. The tool device according to claim 1 , wherein a normal vector on one of the tangent planes is oriented away from the tool axis of rotation in the radial direction.

17. The tool device according to claim 1 , wherein a normal vector on one of the tangent planes is oriented in the radial direction to the tool axis of rotation.

18. The tool device according to claim 1 , wherein
the tool device comprises at least one operating region, at least one attachment device region, and at least one connection region, and the operating region is arranged to act on a work piece arrangement or on a work piece, and
wherein the at least one connection region is arranged between the attachment device and each of the operating regions.

19. The tool device according to claim 18 , wherein the tool device comprises in the region of the attachment device at least one upper boundary plane and at least one lower boundary plane, wherein the boundary planes are disposed substantially perpendicular to said tool axis of rotation,
wherein the boundary planes are spaced apart from each other, and wherein each of the driving area regions is arranged between one of the at least one upper boundary plane and one of the at least one lower boundary plane, wherein at least one of the connection regions is arranged substantially in a region of one of the lower boundary planes.

20. The tool device according to claim 1 , wherein
an angle α is enclosed between one of the tangent planes and the radial plane, wherein the radial plane is arranged perpendicular to the tool axis of rotation,
wherein the angle α is equal to or smaller than 90 degrees, and
the angle α is larger than 0 degrees.

21. The tool device according to claim 1 , wherein
an angle ß is included between one of the tangent planes and the axial plane, wherein said tool axis of rotation is arranged in the axial plane, wherein the angle ß preferably is equal to or smaller than 90 degrees, and
the angle ß is larger than 0 degrees.

22. The tool device according to claim 1 , wherein
the attachment device has an even number of driving area regions, wherein the attachment device has 4 or more driving area regions and

64 or less driving area regions.

23. The tool device according to claim 22 , wherein the driving area regions are arranged in one of the following ways:
substantially star-shaped, or
substantially in the form of a star-shaped polygon.

24. A connection device which is suitable for connecting a tool device with a machine tool having a driving device moving around a driving axis,
wherein the connection device comprises a first connection region and a second connection region,
wherein the first connection region is arranged for connecting the connection device with the machine tool, wherein the connection device can be connected to the machine tool in such a way that the driving axis and a connection axis of rotation substantially coincide,
wherein the second connection region is arranged for connecting the connection device with the tool device, and
wherein at least one of said connection regions comprises an attachment device as defined in claim 1 .

25. The connection device according to claim 24 , wherein the first connection region is arranged rotationally symmetrically to the connection axis of rotation.

Assignees

• Fein C & E Gmbh
• Bosch Gmbh Robert

Inventors

• Klabunde Olaf
• Blickle Juergen
• Thomaschewski Walter
• Bek Fabian
• Delfini Stefano
• Fellmann Willi
• Luescher Bruno
• Bozic Milan
• Mathys Thomas
• Grolimund Daniel

Classifications

• B23D61/006 Primary

  Oscillating saw blades · CPC title

• B24B45/006

  Quick mount and release means for disc-like wheels, e.g. on power tools · CPC title

• Y10T279/33

  Member applies axial force component · CPC title

• B24B45/00

  Means for securing grinding wheels on rotary arbors (suppression of vibrations in systems F16F15/00; testing static or dynamic balancing of machines G01M1/00) · CPC title

• B24B23/04 Primary

  with oscillating grinding tools; Accessories therefor · CPC title