Method for skiving and according apparatus comprising a skiving tool

Patent metadata

Field	Value
Publication number	US-9527148-B2
Application number	US-201214116082-A
Country	US
Kind code	B2
Filing date	May 3, 2012
Priority date	May 6, 2011
Publication date	Dec 27, 2016
Grant date	Dec 27, 2016

Abstract

A method and an apparatus for skiving a work piece that has a rotationally-symmetric, periodic structure, by applying a skiving tool. The skiving tool has a tapering collision structure. During skiving, a coupled relative movement of the skiving tool in relation to the work piece is performed. The skiving tool is rotated about a first rotation axis and the work piece is rotated about a second rotation axis. A negative tilt angle is set during skiving, and the first rotation axis runs skew with respect to the second rotation axis.

First claim

The invention claimed is:

1. A method for skiving a work piece having a rotationally-symmetric, periodic structure, comprising applying a skiving method to the work piece, the method further comprising:
coupledly performing a relative movement of a skiving tool, which comprises a body and cutting teeth that together define a tapering collision contour, in relation to the work piece;
rotating the skiving tool about a first rotation axis;
rotating the work piece about a second rotation axis that runs, during the application of the skiving method, skew relative to the first rotation axis; and
setting a negative tilt angle of the skiving tool during the skiving.

2. The method according to claim 1 , wherein said relative movement during the application of the skiving method corresponds to a relative movement of a helical gear.

3. The method according to claim 1 , wherein said tilt angle is between −2 degrees and −45 degrees.

4. The method according to claim 1 , further comprising providing an effective intersection of the first and second rotation axes in the range of: −60°≦Σ eff ≦60°.

5. The method according to claim 1 , wherein the skiving tool comprises a plurality of cutting teeth, each having constructional rake angles.

6. The method according to claim 1 , further comprising providing a kinematic-constructionally head rake angle from a sum of a kinematically generated negative rake angle and a constructional rake angle of the skiving tool.

7. The method according to claim 1 , wherein the rotationally-symmetric, periodic structure includes (i) a toothing comprising interior teeth or (ii) a toothing comprising exterior teeth of the work piece.

8. The method according to claim 7 , wherein the work piece is a cylindrical work piece defining a predefined cutting face offset, which is negative for said toothing comprising interior teeth and positive for said toothing comprising exterior teeth.

9. The method according to claim 1 , wherein the work piece allows only a small overrun.

10. An apparatus for skiving a work piece having a rotationally-symmetric, periodic structure by applying a skiving tool, the apparatus comprising:
a skiving tool having a tapering collision contour and comprising a body and cutting teeth that together define the tapering collision contour;
a tool spindle configured to fix the skiving tool;
a work piece spindle configured to fix the work piece; and
numerically controlled drives configured to coupledly perform a relative movement and to coupledly rotate the skiving tool together with the tool spindle about a first rotation axis and the work piece together with the work piece spindle about a second rotation axis,
wherein the apparatus includes a numerical control or is connectable with a numerical control configured to provide a tilt angle during the skiving, and the first rotation axis skew with respect to the second rotation axis.

11. The apparatus according to claim 10 , wherein the skiving tool has a tool section, which has cutting edges defining cutting teeth which project outward.

12. The apparatus according to claim 10 , wherein the skiving tool has a tool section defining one of a disc-type cutting wheel or a deep counterbore-type cutting wheel.

13. The apparatus according to claim 10 , wherein said tilt angle is towards the work piece.

14. The apparatus according to claim 10 , wherein the apparatus comprises a machine having six axes.

15. The apparatus according to claim 10 , wherein the skiving tool is a massive tool or a bar cutter skiving wheel.

16. The apparatus according to claim 10 , wherein the numerical control is configured to set said tilt angle at a negative tilt angle.

17. The apparatus according to claim 11 , wherein the tool section defines a skiving wheel.

18. The apparatus according to claim 12 , wherein the tool section defines a skiving wheel.

19. The apparatus according to claim 13 , wherein the tilt angle is between −2 degrees and −45 degrees.

Assignees

• Vogel Olaf
• Klingelnberg Ag

Inventors

• Vogel Olaf

Classifications

• Y10T409/105724

  Gear shaving · CPC title

• B23F5/163 Primary

  the tool and workpiece being in crossed axis arrangement, e.g. skiving, i.e. "Waelzschaelen" · CPC title

• Y10T407/17

  Gear cutting tool · CPC title

• Y10T409/101749

  Process · CPC title

• B23F21/106

  in exchangeable arrangement · CPC title