Two-stage closed-type undercutting cycloid movable tooth reduction gear

Abstract

The invention provides a two-stage closed-type undercutting cycloid movable tooth reduction gear. The two-stage closed-type undercutting cycloid movable teeth reduction gear comprises an input shaft,an angular contact ball roller, a first cage, a rear side transmission wheel and the like. A transmission mechanism is composed of a two-stage differential undercutting cycloid movable tooth transmission unit, and the input movement and the output movement of a first-stage transmission part are simultaneously used as the input of a second-stage transmission part; and a undercutting cycloid rollerpath is divided into a undercutting inner-cycloid roller path and a undercutting outer-cycloid roller path; according to the axial arrangement, the reduction gear has four major types of configurations, for each major type, the each major type is divided into the four types that the two stages are both the undercutting inner-cycloid roller path, the two stages are both undercutting outer-cycloid roller path, the first-stage is the undercutting inner-cycloid roller path and the second-stage is the undercutting outer-cycloid roller path, and the first-stage is the undercutting outer-cycloid roller path and the second-stage is the undercutting inner-cycloid roller path, and sixteen configurations are included. The two-stage closed-type undercutting cycloid movable teeth reduction gear has theinherent attributes of flexible configuration types and wide transmission ratio range, has a plurality of advantages by relying on the attributes, and is high in applicability.

Description

technical field [0001] The invention relates to the technical field of movable tooth transmission, in particular to a double-stage closed undercut cycloid movable tooth reducer. Background technique [0002] In the traditional involute gear transmission, in some special cases, the designed gear will appear undercut, although it does not affect the transmission accuracy of the gear, but the root of a single tooth becomes thinner due to the thickness of the undercut, and the bending resistance of the gear decreases , the degree of coincidence is reduced, which affects the stability of the transmission. Therefore, in the traditional design idea, the design of the involute gear is to avoid undercutting as much as possible. In another traditional transmission form—cycloidal pinwheel transmission technology, the actual tooth profile of the cycloidal wheel is strictly not allowed to undercut, because undercutting will cause its transmission to be distorted. With the development of...

AI Technical Summary

Problems solved by technology

The problem arising from the above situation is that the power density of the traditional cycloidal steel ball movable gear reducer is not high. Generally speaking, it is large in size, relatively small in transmission ratio, insufficient in space utilization, and lack of market competitiveness.

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