Title:
WAVE GEAR DEVICE PROVIDED WITH THREE-DIMENSIONAL TOOTH PROFILE
Document Type and Number:
WIPO Patent Application WO/2022/091384
Kind Code:
A1
Abstract:
A three-dimensional tooth profile of an internal gear tooth (20) of a wave gear device (1) is a basic internal gear tooth profile (20(0)) at an internal gear tooth outer end (20a), and is a reduced tooth profile, which is obtained by proportionally reducing the basic internal gear tooth profile (20(0)) only in the transverse direction, at the other positions in the tooth trace direction. A three-dimensional tooth profile of an outer gear tooth (3) is a basic outer gear tooth profile (30(0)) at an outer gear tooth outer end (30a), and is an enlarged tooth profile, which is obtained by proportionally enlarging the basic outer gear tooth profile (30(0)) only in the transverse direction, at the other positions in the tooth trace direction. The addendum of a part of the internal gear tooth (20) on an internal gear tooth inner end (20b) side is larger than that of the other parts, and inhibits interference with the outer gear tooth (30). The present invention can achieve the three-dimensional tooth profiles of the outer gear tooth (30) and the internal gear tooth (20) which three-dimensionally engage the outer gear teeth (30) and the internal gear teeth (20) with each other, which inhibit both teeth from interfering with each other on the internal gear tooth inner end (20b) side, and which facilitate gear cutting processing.
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Inventors:
SHIROKOSHI NORIO (JP)
Application Number:
PCT/JP2020/040965
Publication Date:
May 05, 2022
Filing Date:
October 30, 2020
Export Citation:
Assignee:
HARMONIC DRIVE SYSTEMS (JP)
International Classes:
F16H1/32
Domestic Patent References:
| WO2013105127A1 | 2013-07-18 | |||
| WO2016013383A1 | 2016-01-28 | |||
| WO2016006102A1 | 2016-01-14 | |||
| WO2013046274A1 | 2013-04-04 | |||
| WO2019077719A1 | 2019-04-25 |
Foreign References:
| JP2012051049A | 2012-03-15 | |||
| JPS4541171B1 | ||||
| JP2017044287A | 2017-03-02 | |||
| JPS63115943A | 1988-05-20 | |||
| JPS6479448A | 1989-03-24 |
Other References:
See also references of EP 4012221A4
Attorney, Agent or Firm:
YOKOZAWA Shiro (JP)
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