Gear

Patent metadata

Field	Value
Publication number	US-10655722-B2
Application number	US-201615349231-A
Country	US
Kind code	B2
Filing date	Nov 11, 2016
Priority date	Nov 12, 2015
Publication date	May 19, 2020
Grant date	May 19, 2020

Abstract

Gear mechanism, in particular coaxial gear mechanism or linear gear mechanism, having a toothing system, a tooth carrier with radially oriented guides, teeth which are received in the guides for engagement with the toothing system, the teeth being mounted in the guides such that they can be displaced radially relative to the tooth carrier in the direction of their longitudinal axis, a cam disk for radially driving the teeth, the tooth carrier comprising a first tooth carrier part and a second tooth carrier part.

First claim

The invention claimed is:

1. Gear mechanism comprising a coaxial gear mechanism or a linear gear mechanism, having
a toothing system,
a tooth carrier with radially oriented guides,
teeth which are received in the guides for engagement with the toothing system, the teeth being mounted in the guides such that they can be displaced radially relative to the tooth carrier in the direction of their longitudinal axis,
a cam disk for radially driving the teeth,
the tooth carrier comprising a first tooth carrier part and a second tooth carrier part, and
at least one bearing with rolling bodies being arranged between a housing of the gear mechanism and the tooth carrier, the rolling bodies lying directly on a tooth carrier bearing face of the tooth carrier.

2. Gear mechanism according to claim 1 , the first tooth carrier part and the second tooth carrier part being connected by way of a connecting means.

3. Gear mechanism according to claim 1 , the second tooth carrier part comprising at least two circumferential rows of guides, which rows are arranged in parallel in the axial direction.

4. Gear mechanism according to claim 1 , wherein the rolling bodies lie directly on a housing bearing face of the housing.

5. Gear mechanism according to claim 4 , the toothing system being configured integrally with the housing.

6. Gear mechanism according to claim 4 , at least one part of the group of parts consisting of the tooth carrier bearing face and the housing bearing face, and a rotational axis of the rolling bodies assuming an angle of at least 10° or at most 80° with respect to the longitudinal axis of the gear mechanism.

7. Gear mechanism according to claim 1 , further comprising a bearing with pivoting segments and segment bearing bodies between the cam face and the teeth.

8. Gear mechanism according to claim 7 , the tooth carrier comprising at least one radially inwardly or outwardly extending run-on flange which engages over the pivoting segments at least partially in the radial direction.

9. Gear mechanism according to claim 1 , wherein at least one of the tooth carrier parts comprises a run-on flange having an output bearing face which interacts directly with output bearing rolling bodies.

10. Gear mechanism according to claim 9 , the output bearing rolling bodies being mounted directly on the cam disk.

11. Gear mechanism according to claim 1 , further comprising a plurality of pivoting segments which are arranged circumferentially on segment bearing bodies, wherein each of the plurality of pivoting segments has an anti-friction bearing face lying on the segment bearing bodies, and wherein each of the plurality of pivoting segments has a rim bearing face arranged on both sides of the pivoting segments in the axial direction.

12. A method for producing the gear mechanism of claim 1 , comprising connecting the first tooth carrier part and the second tooth carrier part by means of connecting means; and machining the toothing system and the housing bearing faces in one clamping.

13. The method according to claim 12 , further comprising machining of the first tooth carrier part and the second tooth carrier part in one clamping.

Assignees

• Wittenstein Se

Inventors

• Dorner Wilhelm
• Lesch Michael
• Kümmeth Andreas
• Michel Frank
• Schreiber Heiko
• Wilhelm Thomas

Classifications

• F16H49/001 Primary

  Wave gearings, e.g. harmonic drive transmissions · CPC title

• F16H2055/0893

  for parallel shaft arrangement of toothed members · CPC title

• F16H55/17 Primary

  Toothed wheels (worm wheels F16H55/22; chain wheels F16H55/30) · CPC title

• B23P15/14

  gear parts, e.g. gear wheels · CPC title

• F16H25/06 Primary

  with intermediate members guided along tracks on both rotary members · CPC title