Gradually cycloidal small-tooth-difference planetary gear pair

Abstract

The invention provides a gradually cycloidal small-tooth-difference planetary gear pair. The gradually cycloidal small-tooth-difference planetary gear pair comprises an internal gear and a planetary gear conjugated with the internal gear, wherein the tooth profile curve of the internal gear adopts a convex involute tooth profile curve; and the tooth profile curve and a meshing line of the planetary gear are obtained according to the tooth profile curve of the internal gear by adopting a tooth profile curve conjugate meshing principle. Therefore, the transmission ratio is large, the bearing capacity is high, the transmission efficiency is high, the geometric tooth profile of gradually cycloidal inner teeth is simple and easy to machine, the design of an integrated gear ring is facilitated, the optimizability of gear pair design is improved through tooth profile control parameters, undercutting is not prone to being generated in the meshing process, the gear pair coincidence degree is large, the multi-tooth elastic meshing characteristic and the error homogenization effect are high, and the precision transmission requirements of high precision and high bearing capacity can be met.

Description

technical field [0001] The invention relates to the technical field of gear transmission, in particular to an involute planetary gear pair with few tooth differences. Background technique [0002] The planetary gear pair with small tooth difference is the core component of the planetary gear transmission mechanism. Its internal and external gears form a conjugate meshing gear pair with a difference of one to four teeth. According to the different geometric tooth shapes, there are mainly cycloid and involute few teeth. There are two transmission forms of differential planetary gear pair. [0003] Cycloidal pinwheel gear pair with small tooth difference is widely used in cycloid small tooth difference transmission. It has large transmission ratio, high transmission precision, high load capacity, high transmission efficiency, simple transmission mechanism, small mechanism size, advantages such as compactness. The RV reducer developed based on the cycloidal pinwheel gear pair ...

AI Technical Summary

Problems solved by technology

[0006] In order to solve the above technical problems, the present invention provides an involute planetary gear pair with less tooth difference, which not only has a large transmission ratio, high load capacity, and high transmission efficiency, but also has a simple and easy-to-process involute internal tooth geometry, and is convenient for integration. The gear ring design effectively solves the problems of high difficulty in indexing machining of the cycloidal pinwheel assembled pin gear housing and low performance of small-sized tooth extraction design. The tooth shape control parameters increase the optimization of the gear pair design, and the meshing process is not easy. Undercutting occurs, and the gear pair has a large degree of overlap, with strong multi-tooth elastic meshing characteristics and error homogenization effect, which can meet the precision transmission requirements of high precision and high load capacity

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