Title:
無潤滑型波動歯車装置
Document Type and Number:
Japanese Patent JP4807689
Kind Code:
B2
Abstract:
A wave gear device does not need to be lubricated. In a cup-shaped wave gear device 1, the inner ring 43 and balls 45 of the wave bearing 42 of the wave generator 4 are made of a ceramic material, while the outer ring 44 of the wave bearing 42 is made of SUJ2 or stainless steel. A DLC coating 302 is formed by a DLC coating process on a rolling surface 48 formed in the inner circumferential surface of the outer ring 44, a DLC coating 303 is formed by a DLC coating process on a rolling surface 47 in the outer circumferential surface of the inner ring 43, and DLC coatings 304 are formed by a DLC coating process on the surfaces of the balls 45. With this, non-lubricated wave gear device can be obtained. Since the agitating resistance of a lubricant can also be eradicated from these parts of the wave bearing, a large decrease can be made in the power loss ratio.
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Inventors:
Yu Kobayashi
Application Number:
JP2001154330A
Publication Date:
November 02, 2011
Filing Date:
May 23, 2001
Export Citation:
Assignee:
Harmonic Drive Systems Inc.
Harmonic Drive Akzien Gezel Shaft
Harmonic Drive Akzien Gezel Shaft
International Classes:
F16H1/32; F16C33/30; F16H49/00; F16H55/17
Domestic Patent References:
| JP2275166A | ||||
| JP2000219427A | ||||
| JP2000002315A | ||||
| JP11193852A | ||||
| JP2000205277A | ||||
| JP10318338A | ||||
| JP9303501A | ||||
| JP10019092A | ||||
| JP58035562B2 |
Attorney, Agent or Firm:
Shiro Yokozawa