Wave generator and harmonic reducer
By installing a pressure device inside the cam of the harmonic reducer to adjust the radial pressure of the inner raceway, the problem of unstable operation caused by the widening of the backlash under long-term load in the wave generator is solved, resulting in more stable operation and extended service life.
CN115823115BActive Publication Date: 2026-05-29GREE ELECTRIC APPLIANCE INC OF ZHUHAI
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- GREE ELECTRIC APPLIANCE INC OF ZHUHAI
- Filing Date
- 2022-12-07
- Publication Date
- 2026-05-29
AI Technical Summary
Technical Problem
Under prolonged load, existing harmonic reducers experience increased bearing clearance in the wave generator, leading to unstable operation and increased frictional losses between the wave generator and the flexspline.
Method used
A pressure device, including a piston chamber, an annular chamber, and a through hole, is installed inside the cam of the wave generator. The radial inner pressure of the inner raceway is adjusted by hydraulic or pneumatic pressure, causing slight deformation of the inner raceway, reducing the clearance, and thus achieving clearance adjustment.
Benefits of technology
It improves the operational stability of the wave generator, reduces the probability of fatigue failure, and extends its service life.
✦ Generated by Eureka AI based on patent content.
Smart Images
Figure CN115823115B_ABST
Abstract
The application provides a wave generator and harmonic reducer, the wave generator comprises a flexible bearing outer ring, a cam and a rolling body, the flexible bearing outer ring is annular and sleeved on the outer periphery of the cam, and the rolling body is located between the flexible bearing outer ring and the cam and can roll between the flexible bearing outer ring and the cam; the position where the outer periphery of the cam is in contact with the rolling body is provided with an inner raceway, and the inside of the cam is provided with a pressure device; when the clearance between the inner raceway and the rolling body increases, the pressure device can increase the pressure acting on the radial inner side of the inner raceway, so that the inner raceway is deformed to reduce the clearance between the inner raceway and the rolling body. According to the application, the effect of adjusting the radial clearance can be achieved, the wave generator operates stably, the probability of fatigue failure of the wave generator is reduced, and the use of the wave generator is increased.
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