Bevel gear cutting machine for chamfering bevel gear tooth edges and method for chamfering the tooth edges of bevel gears

Patent metadata

Field	Value
Publication number	US-10245664-B2
Application number	US-201715708576-A
Country	US
Kind code	B2
Filing date	Sep 19, 2017
Priority date	Sep 23, 2016
Publication date	Apr 2, 2019
Grant date	Apr 2, 2019

Abstract

Bevel gear cutting machines having multiple numerically-controllable axes, a workpiece spindle, which accommodates a bevel gear coaxially in relation to a workpiece spindle axis, and a deburring device having a deburring spindle for accommodating at least one first deburring tool. The bevel gear cutting machines may chamfer tooth edges of the bevel gear in two passes, where, in a first pass, first chamfers are provided on the tooth edges by using the first deburring tool, and, in a second pass, second chamfers are provided in the region of the first chamfers by using the first deburring tool or by using a second deburring tool in a continuous procedure, in which the bevel gear and the first or second deburring tool rotate in a coupled manner while engaged with one another.

First claim

What is claimed is:

1. A bevel gear cutting machine comprising:
a plurality of numerically-controllable axes;
a workpiece spindle;
a workpiece spindle axis, wherein the workpiece spindle is configured to receive a bevel gear coaxially with the workpiece spindle axis; and
a deburring device including a deburring spindle configured to receive at least one first deburring tool defining at least one cutting edge;
wherein the bevel gear cutting machine is configured to chamfer tooth edges in a first pass and a second pass;
wherein, in the first pass, first chamfers are formed on the tooth edges by using the at least one cutting edge of the at least one first deburring tool in a continuous process in which the bevel gear and the at least one first deburring tool coupledly rotate while engaged with one another; and
wherein, in the second pass, second chamfers are formed adjacent or near the first chamfers by using the at least one cutting edge of the at least one first deburring tool or by using at least one cutting edge of a second deburring tool in a continuous process, in which the bevel gear and the at least one first or second deburring tool coupledly rotate while engaged with one another.

2. The bevel gear cutting machine according to claim 1 , wherein, in the first pass, the at least one first deburring tool is set at a first angle relative to the bevel gear and, in the second pass, said at least one first deburring tool or second deburring tool is set more steeply relative to the bevel gear than the at least one first deburring tool in the first pass.

3. The bevel gear cutting machine according to claim 1 , wherein one or more of the at least one first deburring tool or the second deburring tool is a deburring cutterhead.

4. The bevel gear cutting machine according to claim 3 , wherein the deburring cutterhead comprises cutter inserts include one or more of hard metal, tool steel, or cutting ceramic.

5. The bevel gear cutting machine according to claim 1 , wherein the deburring device includes both the at least one first deburring tool and the second deburring tool.

6. The bevel gear cutting machine according to claim 5 , further defining a pivot axis, wherein the at least one first deburring tool is located coaxially with the second deburring tool and the deburring device is pivotable about the pivot axis of the bevel gear cutting machine.

7. The bevel gear cutting machine according to claim 6 , wherein the pivot axis defines a vertical axis.

8. The bevel gear cutting machine according to claim 1 , further defining at least six axes and including a deburring spindle axis defining a rotational axis of the deburring spindle.

9. The bevel gear cutting machine according to claim 8 , further defining a linear axis for linear movement of one or more of the at least one first deburring tool or the second deburring tool.

10. A method for chamfering tooth edges of a bevel gear in a numerically-controllable bevel gear cutting machine comprising:
performing a first pass and using a deburring tool in the first pass to create first chamfers at or near tooth edges of a bevel gear, and
performing a second pass and using a deburring tool in the second pass to create second chamfers at or near the first chamfers,
and further including performing the first pass and the second pass so that the first chamfers together with the second chamfers define double facets that extend substantially in parallel to one another.

11. The method according to claim 10 , including performing both the first pass and the second pass as continuous machining processes including coupledly rotating the bevel gear and the deburring tool while engaged with one another.

12. The method according to claim 10 , further including setting the deburring tool less steeply in relation to the bevel gear for the first pass than for the second pass.

13. The method according to claim 10 , wherein the deburring tool defines a deburring cutterhead including a plurality of rod-type cutter inserts.

14. The method according to claim 10 , further including, while performing the first pass, guiding cutting edges of the deburring tool from a head of the bevel gear to a base of the bevel gear outward through tooth gaps of the bevel gear, thereby creating the first chamfers.

15. The method according to claim 14 , further including, while performing the second pass, guiding cutting edges of the deburring tool from the head of the bevel gear to the base of the bevel gear outward through tooth gaps of the bevel gear, thereby creating the second chamfers.

16. The method according to claim 10 , further including performing the second pass using a different deburring tool than in the first pass.

17. The method according to claim 10 , wherein the bevel gear cutting machine includes a deburring device including a first deburring tool and a second deburring tool and the method includes performing the first pass using the first deburring tool, performing the second pass includes using the second deburring tool, and rotating or pivoting the deburring device before the performing the second pass so as to use the second deburring tool in the second pass.

Assignees

• Klingelnberg Ag

Inventors

• Yoon Ji Kyung
• Weber Jürgen
• Ribbeck Karl-Martin

Classifications

• B23F19/102 Primary

  by milling · CPC title

• B23F19/105

  the tool being an end mill · CPC title

• B23F23/12

  Other devices, e.g. tool holders; Checking devices for controlling workpieces in machines for manufacturing gear teeth · CPC title

• Y10T409/101272

  Using relatively reciprocating or oscillating cutter · CPC title

• B23F19/10 Primary

  Chamfering the end edges of gear teeth · CPC title