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A zero-backlash harmonic gear drive

A technology of harmonic gears and transmissions, which is applied in the direction of gear transmissions, transmissions, belts/chains/gears, etc., can solve the problems of large transmission hysteresis, achieve the elimination of transmission hysteresis, strong bearing capacity, and stable transmission Effect

Active Publication Date: 2020-07-31
王家梁
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

By analyzing the research status at home and abroad, it can be known that the transmission hysteresis of existing products at home and abroad is generally large

Method used

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  • A zero-backlash harmonic gear drive
  • A zero-backlash harmonic gear drive
  • A zero-backlash harmonic gear drive

Examples

Experimental program
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Effect test

Embodiment Construction

[0035] like figure 1 and figure 2 As shown, the zero-backlash harmonic gear transmission of the present invention includes a rigid gear 1, a flexible gear 2 and a wave generator, the wave generator is composed of a flexible bearing 3 and an elastic cam 4, and the flexible gear 2 is located on a rigid In the gear 1, the upper and lower ends of the flexible gear 2 mesh with the upper and lower ends of the rigid gear 1, the flexible bearing 3 is located between the elastic cam 4 and the flexible gear 2, and the elastic cam 4 is oval in shape , the central portion of the elastic cam 4 is provided with a shaft hole 5, and the two sides of the shaft hole 5 in the direction of the long axis of the elastic cam 4 are respectively provided with one for forming at both ends in the direction of the long axis of the elastic cam 4 Structural hole 6 of cam thin wall 7 . The use of the elliptical elastic cam 4 can maximize the number of meshing teeth between the flexible gear 2 and the rig...

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Abstract

The invention discloses a zero-return-difference harmonic gear transmission device. The zero-return-difference harmonic gear transmission device comprises a rigid gear, a flexible gear and a wave generator; the wave generator is composed of a flexible bearing and an elastic cam; the flexible gear is located in the rigid gear; the upper end and the lower end of the flexible gear mesh with the upper end and the lower end of the rigid gear; the flexible bearing is located between the elastic cam and the flexible gear; the shape of the elastic cam is oval; a shaft hole is formed in the center of the elastic cam; and two structural holes used for forming thin walls of the cam at the two ends in the long axis direction of the elastic cam are formed in the positions, located on the two sides of the shaft hole, in the long axis direction of the elastic cam respectively. The zero-return-difference harmonic gear transmission device is simple in structure, reasonable in design and convenient to implement, backlash in circular teeth can be effectively eliminated, the transmission return difference can be effectively eliminated, in addition, the torsional rigidity can be guaranteed, the service life can be long, the application range can be wide, the practicability can be high, and the popularization and application values can be high.

Description

technical field [0001] The invention relates to the technical field of transmission devices, in particular to a zero backlash harmonic gear transmission device. Background technique [0002] Harmonic gear transmission is a brand new gear transmission that came out in the late 1950s and early 1960s. Compared with general gear transmission, it has the advantages of large transmission ratio, small size, light weight, high precision and low noise. In addition, it also has the function of transmitting motion and power through the sealed casing, so that the harmonic gear transmission has the incomparable superiority of some other transmission devices. In the past ten years, harmonic gear transmission technology and transmission devices have been widely used in various fields such as instrumentation, automobiles, robots, and precision optical equipment, whether it is used as a precision harmonic drive for a high-sensitivity servo system, or as a transmission large The power harmo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16H49/00F16H1/32
CPCF16H1/32F16H49/001
Inventor 王家梁
Owner 王家梁
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