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Patent Searching and Data


Title:
HOLLOW REDUCER FOR HIGH PRECISION CONTROL
Document Type and Number:
WIPO Patent Application WO/2020/233194
Kind Code:
A1
Abstract:
Disclosed is a hollow reducer for high precision control, the hollow reducer comprising a pin wheel housing (1) and two stages of speed reduction components arranged in same. The first-stage speed reduction component comprises a driving wheel (13), a duplicate gear (8) and a planetary wheel (12) on a servo motor; the second-stage speed reduction component comprises 2 to 3 uniformly arranged eccentric shafts (11), a cycloidal gear, a pin (17), a left rigid disc (16), a right rigid disc (5) and bearings, wherein the cycloidal gear is supported on two eccentric sections of each eccentric shaft (11) by means of a third bearing (15), shaft extensions on two sides of each eccentric section are supported on the left and right rigid discs (16, 5) by means of a fourth bearing (14), the rigid discs (16, 5) are supported on two sides of the pin wheel housing (1) by means of a fifth bearing (2), and after the cycloidal gear is modified, side clearances between the pin (17) and two sides of a tooth groove of the cycloidal gear satisfy Δc = (0.7-5) λ (mm), wherein λ is the thermal expansion amount of the cycloidal gear when the reducer does work 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: operational work does not cause overheating, the conventional manufacturing precision cost is low, and the reducer can be interchanged with an RV reducer.

Inventors:
LIU WEIWEI (CN)
Application Number:
CN2020/078193
Publication Date:
November 26, 2020
Filing Date:
March 06, 2020
Export Citation:
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Assignee:
SUZHOU HUAZHEN IND RV REDUCER CO LTD (CN)
International Classes:
F16H1/32; B25J9/10; F16H57/023; F16H57/08
Foreign References:
CN108869644A2018-11-23
CN108036027A2018-05-15
CN108843747A2018-11-20
JP2018059556A2018-04-12
KR20140108420A2014-09-11
Attorney, Agent or Firm:
SUZHOU GROUNZE INTELLECTUAL PROPERTY AGENCY CO., LTD. (CN)
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