Title:
REDUCER FOR HIGH PRECISION CONTROL
Document Type and Number:
WIPO Patent Application WO/2020/233193
Kind Code:
A1
Abstract:
Disclosed is a reducer for high precision control, the reducer comprising a pin wheel housing (1) and two stages of speed reduction components arranged in same. The first-stage component comprises an input shaft (9), a sun wheel (14) and a planetary wheel (15); and the second-stage component comprises 2 to 3 uniformly arranged eccentric shafts (6), a cycloidal gear, a pin (4), a left rigid disc (13), a right rigid disc (12) and bearings, wherein the cycloidal gear is supported on two eccentric sections of each eccentric shaft (6) by means of a first bearing (8), shaft extensions on two sides of each eccentric section of each eccentric shaft (6) are supported on the left rigid disc (13) and the right rigid disc (12) by means of a second bearing (7), the rigid discs (13, 12) are supported in inner holes on two sides of the pin wheel housing (1) by means of a third bearing (2), and a side clearance between the pin (4) and a tooth groove of the cycloidal gear satisfies Δc = (0.7-5) λ (mm), wherein λ is the thermal expansion amount of the cycloidal gear when working under a rated torque. By means of the method, the side clearance Δc is closely related to the thermal expansion amount λ of the cycloidal gear, such that the reducer has good dynamic characteristics: overheating is avoided, the conventional manufacturing precision cost is low, and the reducer can be interchanged with an RV reducer.
Inventors:
LIU WEIWEI (CN)
Application Number:
PCT/CN2020/078192
Publication Date:
November 26, 2020
Filing Date:
March 06, 2020
Export Citation:
Assignee:
SUZHOU HUAZHEN IND RV REDUCER CO LTD (CN)
International Classes:
B25J9/10; F16H1/32; F16H57/023; F16H57/08
Foreign References:
| CN108980285A | 2018-12-11 | |||
| CN206130000U | 2017-04-26 | |||
| CN104500660A | 2015-04-08 | |||
| JP2018059556A | 2018-04-12 | |||
| KR101445725B1 | 2014-10-02 |
Attorney, Agent or Firm:
SUZHOU GROUNZE INTELLECTUAL PROPERTY AGENCY CO., LTD. (CN)
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