Method and device for fine machining a toothed workpiece, and program for controlling said device

Patent metadata

Field	Value
Publication number	US-9796030-B2
Application number	US-201414904785-A
Country	US
Kind code	B2
Filing date	Jul 11, 2014
Priority date	Jul 17, 2013
Publication date	Oct 24, 2017
Grant date	Oct 24, 2017

Abstract

A method and a device for the fine-machining of a toothed workpiece with a toothed finishing tool ( 10 ) which meshes with the workpiece in mutual tooth engagement are, for the purpose of producing conically modified tooth flanks, designed according to the invention in such a way that in the dressing process the finishing tool ( 10 ) and the dressing tool ( 11 ) are set at a position of reduced center distance (a) that is offset from a position of maximum center distance.

First claim

The invention claimed is:

1. Method of fine-machining of a toothed workpiece ( 12 ), using a toothed finishing tool ( 10 ), said method comprising:
meshing said toothed finishing tool with the workpiece ( 12 ) in mutual tooth engagement,
said finishing tool ( 10 ) being dressed in accordance with a dressing process in which the finishing tool ( 10 ) and a toothed dressing tool ( 11 ), in tooth engagement with each other, rotate about their respective gear axes (C 2 , C 1 ) which are arranged relative to each other at a center distance (a) different from zero and an axis-crossing angle different from zero,
characterized in that the gear axes (C 2 , C 1 ) of the finishing tool ( 10 ) and of the dressing tool ( 11 ) are arranged relative to each other in a position that is offset from the position of maximum center distance (a′) to a position of reduced center distance (a).

2. Method according to claim 1 , characterized in that the toothed contour of the finishing tool ( 10 ) is an internal toothed contour, while the toothed contour of the dressing tool ( 11 ) is an external toothed contour.

3. Method according to claim 1 , characterized in that the toothed contour of the finishing tool ( 10 ) is an external contour, while the toothed contour of the dressing tool ( 11 ) is an internal contour.

4. Method according to claim 1 characterized in that the finishing tool ( 10 ) is a ring-shaped honing tool.

5. Method according to claim 1 characterized in that the tooth thickness of the dressing tool ( 11 ), disregarding tooth trace convexities, is constant over the tooth width.

6. Method according to claim 1 characterized in that a superimposed movement component parallel to the gear axis (C 1 ) of the dressing tool ( 11 ) is added to the relative movement between the latter and the finishing tool ( 10 ).

7. Method according to claim 1 characterized in that a superimposed movement component orthogonal to the gear axis (C 1 ) of the dressing tool ( 11 ) is added to the relative movement between the latter and the finishing tool ( 10 ).

8. Method according to claim 1 characterized in that for the machining of the workpiece ( 12 ) with the dressed finishing tool ( 10 ), their respective gear axes (C 1 , C 2 ) are positioned relative to each other in such a way that their center distance (a′) is different from the center distance (a) at which the gear axis of the dressing tool ( 11 ) and the gear axis of the finishing tool ( 10 ) were positioned in the dressing process.

9. Method according claim 8 , characterized in that the workpiece ( 12 ) is machined with the dressed finishing tool ( 10 ) in a position of maximum center distance (a′) between the gear axis (C 2 ) of the finishing tool ( 10 ) and the gear axis (C 1 ) of the workpiece ( 12 ).

10. Method according to claim 8 characterized in that for the machining of the workpiece ( 12 ) the axis-crossing angle between the gear axes (C 1 , C 2 ) of the workpiece ( 12 ) and finishing tool ( 10 ) is set to a value which corresponds to the axis-crossing angle at which the gear axes (C 1 , C 2 ) of the dressing tool ( 11 ) and the finishing tool ( 10 ) were positioned in the dressing process.

11. Method according to claim 8 characterized in that for the machining of the workpiece ( 12 ), the axis-crossing angle between the gear axes (C 1 , C 2 ) of the workpiece ( 12 ) and the finishing tool ( 10 ) is set to a value which is offset relative to the axis-crossing angle at which the gear axes (C 1 , C 2 ) of the dressing tool ( 11 ) and the finishing tool ( 10 ) were positioned in the dressing process.

12. Method according to claim 8 characterized in that a movement component in the direction of the gear axes (C 1 , C 2 ) is superimposed on the relative movement between the finishing tool ( 10 ) and the workpiece ( 12 ) which are in meshing engagement with each other in the machining process.

13. Device for the fine-machining of a toothed workpiece ( 12 ), comprising a toothed finishing tool ( 10 ) that is rotatable about its gear axis (C 2 ), a toothed dressing tool ( 12 ) that is rotatable about its gear axis (C 1 ), a device to set the relative position between the gear axes (C 1 , C 2 ), and a controller device serving to control the position-setting device, characterized in that the controller device is designed with the capability to perform a setting that enables the method according to claim 1 to be executed.

14. Device according to claim 13 , characterized in that the controller device runs under the commands of a program.

15. Device according to claim 14 wherein said program comprises a software program, comprising program code to run the program-controlled controller device.

Assignees

• The Gleason Works

Inventors

• Reichert Gerhard
• Funke Walter
• Schauer Engelbert

Classifications

• B23F23/1231

  using a gear-shaped dressing tool · CPC title

• B24B53/075

  for workpieces having a grooved profile, e.g. gears, splined shafts, threads, worms (B24B53/07 takes precedence) · CPC title

• B23F19/057 Primary

  by making use of a tool in the shape of an internal gear · CPC title