Title:
波動歯車装置
Document Type and Number:
Japanese Patent JP7066305
Kind Code:
B2
Abstract:
In a strain wave gearing device (1), fine first and second lubricant-holding grooves (5, 6) for holding lubricant are formed at 5fine pitches in an outer-race external peripheral surface (49) of a wave generator bearing (45) and an outer-race-contacting internal peripheral surface portion (37) of an externally toothed gear (3) in contact therewith. Fine lubricant-guiding grooves (7) for guiding the lubricant to the outer-race-contacting internal peripheral surface 10portion (37) are formed at fine pitches in a second internal peripheral surface portion (38), which adjoins the outer-race-contacting internal peripheral surface portion (37), of an internal peripheral surface (36) of the externally toothed gear (3). This configuration improves the contact state between the outer-race-contacting internal peripheral 15surface portion (37) of the externally toothed gear (3) and the outer-race external peripheral surface (49), thus suppressing fretting wear occurring in these surfaces.
Inventors:
Daisuke Orii
Shuhei Kobayashi
Norio Jojogo
Hiroshi Yamazaki
Shuhei Kobayashi
Norio Jojogo
Hiroshi Yamazaki
Application Number:
JP2020557395A
Publication Date:
May 13, 2022
Filing Date:
November 22, 2018
Export Citation:
Assignee:
Harmonic Drive Systems Inc.
International Classes:
F16H1/32; F16H57/04
Domestic Patent References:
| JP61206154U | ||||
| JP2091238U |
Foreign References:
| WO2017077657A1 |
Attorney, Agent or Firm:
Shiro Yokozawa