Title:
波動発生器および波動歯車装置
Document Type and Number:
Japanese Patent JP6552745
Kind Code:
B2
Abstract:
A wave bearing (7) of a wave generator (5) of a strain wave gearing (1) is provided with steel or stainless steel cylindrical hollow rollers (12) between an inner-race-side raceway surface (9) and an outer-race-side raceway surface (10), the hollow rollers serving as rolling elements. The ratio Di/Do of the inner diameter Di to the outer diameter Do of the hollow rollers (12) is set to 0.95 or more. The relative radius of curvature of hollow rollers (12) that have been flexed into an ellipsoidal shape increases with respect to the inner-race raceway surface (9) and the outer-race raceway surface (10) with which the hollow rollers (12) are in contact, and the Hertz maximum contact stress is reduced. The hardness of the hollow rollers (12), the inner-race raceway surface (9), and the outer-race raceway surface (10) can be reduced.
Inventors:
Yu Kobayashi
Application Number:
JP2018530992A
Publication Date:
July 31, 2019
Filing Date:
July 30, 2016
Export Citation:
Assignee:
Harmonic Drive Systems Inc.
International Classes:
F16H1/32; F16C19/26; F16C33/34
Domestic Patent References:
| JP2002349645A | ||||
| JP2004308755A |
Foreign References:
| DE102006057874A1 | ||||
| DE10149833A1 |
Attorney, Agent or Firm:
Shiro Yokozawa