Tooth profile modification design method and system for cycloid gear of RV speed reducer

Abstract

The invention relates to a tooth profile modification design method and system for a cycloid gear of an RV speed reducer, and belongs to the technical field of design of the RV speed reducers. According to the tooth profile modification design method for the cycloid gear of the RV speed reducer, at least two factors of a manufacturing error, a mounting error, a system bearing deformation and a temperature variable are used as boundary conditions, and a modification amount is used as an optimization variable, so as to build a target function with a minimum transmission error and a minimum hysterisis error of the cycloid gear is built; and the target function is solved to obtain a tooth profile modification amount and a modification function curve of the cycloid gear. The tooth profile modification design method disclosed by the invention comprehensively considers at least two factors of the manufacturing error, the mounting error, the system bearing deformation and the temperature variable, and influences caused by the at least two factors on the modification amount is used as the boundary conditions to determine the modification amount, so that the obtained modification amount andthe modification function curve can pre-control the transmission error and the hysterisis error of the RV speed reducer under an actual working condition, and the aim of improving the motion precisionof the RV speed reducer is fulfilled.

Description

technical field [0001] The invention relates to a design method and system for modifying the tooth profile of a cycloidal gear of an RV reducer, and belongs to the technical field of RV reducer design. Background technique [0002] RV reducer is the core component of industrial robot. In the RV reducer, the planetary transmission of the cycloid pin wheel has the greatest influence on the motion accuracy, and the quality of the tooth profile modification of the cycloid gear is the key factor affecting the motion accuracy and precision life. The existing modification methods include traditional modification methods such as equidistance, shift distance, rotation angle and their combination, as well as the parabolic modification method proposed in recent years. For example, the title is "Modification and Optimization of Cycloidal Wheel of RV Reducer" (author Liu Hongjian), which discloses a modification and optimization design method of cycloidal wheel of RV reducer. Approxima...

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Problems solved by technology

[0003] The purpose of the present invention is to provide a cycloidal gear tooth profile modification design method for RV reducer to solve the problem that the current modification design method does not comprehensively consider manufacturing errors, installation errors, system load deformation and temperature effects. The problem of low transmission accuracy of the cycloid gear after the end; the invention also provides a design system for modifying the tooth profile of the cycloid gear of the RV reducer

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