US 10,307,844 B2Granted

Skiving method and corresponding device

AssigneeProfilator GmbH & Co. KG

InventorsErich Prock, Marcel Sobczyk

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Abstract

A method, and device, for producing gears in gearwheels with a skiving wheel that features cutting teeth, a workpiece spindle for receiving the gearwheel and a tool spindle, wherein the tool and workpiece spindles are positioned at an axial cross-angle relative to one another, wherein the gearing is produced in successive processing steps. Spacewidths between the teeth are incrementally cut deeper. The axial spacing between the tool and workpiece spindles and a turning angle is changed between the processing steps in such a way that a first cutting edge section of the cutting tooth engages on a tooth flank section of a first tooth flank produced during a preceding processing step with an at least reduced material removal referred to other cutting edge sections of this cutting tooth.

Claims13

Dependent claims

A method for producing gear teeth in a gearwheel with a skiving wheel that features cutting teeth, the method comprising:

rotationally driving a workpiece spindle about a rotational workpiece axis;
receiving the gearwheel with the workpiece spindle;
rotationally driving a tool spindle about a rotational tool axis, the tool spindle carrying the skiving wheel;
positioning the tool spindle and the workpiece spindle relative to one another such that an axial cross-angle is defined between the rotational tool axis and the rotational workpiece axis;
rotationally driving the tool spindle and the workpiece spindle in a predefined speed ratio relative to one another;
producing the gear teeth in successive processing steps, the successive processing steps comprising:
incrementally cutting deeper spacewidths into the gearwheel between the gear teeth;
changing an axial spacing between the rotational tool axis of the tool spindle and the rotational workpiece axis of the workpiece spindle;
and
changing a turning angle defined between (A) a center axis of the corresponding spacewidth and (B) a line segment defined between (i) a first fixed point between a first tooth flank and a second tooth flank and (ii) a second fixed point on a cutting tooth of the skiving wheel, such that a first cutting edge section of the cutting tooth engages on a tooth flank section of a first tooth flank produced during a preceding processing step with an at least reduced material removal relative to other cutting edge sections of the cutting tooth, and further changing the turning angle such that a second cutting edge section of the cutting tooth, which differs from the first cutting edge section, engages on a tooth flank section of the second tooth flank with an at least reduced material removal relative to other cutting edge sections of the cutting tooth;
and
wherein the further changing the turning angle comprises:
incrementally reducing an absolute value of the turning angle, and changing a preceding sign of the turning angle.

10 more elements

A method for producing gear teeth in a gearwheel with a skiving wheel that features cutting teeth, comprising:

positioning the skiving wheel and a workpiece spindle to which the gearwheel is provided relative to one another such that an axial cross-angle is defined between a rotational axis of the skiving wheel and a rotational workpiece axis of the workpiece spindle;
rotationally driving the gearwheel and the skiving wheel in a predefined speed ratio relative to one another;
incrementally increasing a penetration depth of the cutting teeth into spacewidths of the gearwheel lying between two opposite tooth flanks of the gearwheel;
and
processing the tooth flanks in succession;
wherein one of the two tooth flanks is processed with a first cutting edge section and the other tooth flank is respectively processed with a second cutting edge section in association with the step of incrementally increasing the penetration depth, the first cutting edge being longer than the second cutting edge.

3 more elements

Dependencies are inferred from the claim text.

Facts

Application: 15/044,511Filed 16 Feb 2016 · continuation
Priority: DE 10 2013 109 98111 Sep 2013
Published: US 2016/0158860 A19 Jun 2016
Granted: 4 Jun 2019
Term ends: Not estimatedThe source records don’t support an estimate.

Classification7 codes

B23F 5/163
The tool having a shape similar to that of a spur wheel or part thereof: the tool and workpiece being in crossed axis arrangement, e.g. skiving,…
G05B 19/186
Characterised by the machine tool function, e.g. thread cutting, cam making, tool direction control: generation of screw- or gearlike surfaces
Y10T 409/101749
Hobbing: process
Y10T 409/105565
Using gear shaper-cutter: cutting rotating work, the axis of which lies in a plane intersecting the cutter axis