Centrosymmetric single-stage undercut cycloid oscillating tooth speed reducer

Abstract

The invention provides a centrosymmetric single-stage undercut cycloid oscillating tooth speed reducer. The centrosymmetric single-stage undercut cycloid oscillating tooth speed reducer comprises an input shaft, a tapered roller bearing, a first crossed roller bearing, a constant-speed output shaft and the like. On the basis of a traditional cycloid steel ball oscillating tooth transmission technology, steel ball oscillating teeth with larger sizes are adopted, so that a cycloid raceway is undercut, and then an undercut cycloid steel ball oscillating tooth transmission unit is obtained; in order to ensure the accuracy and continuity of transmission, the steel ball oscillating teeth with proper sizes should be selected, so that only single side of the obtained undercut cycloid oscillating tooth raceway is undercut, the other side is not undercut, the portion, on the side which is not undercut, of the raceway ensures the accuracy and continuity of transmission, the portion, on the side which is undercut, of the raceway ensures that more steel ball oscillating teeth participate in meshing force transmission at the same time, and therefore, the bearing capacity and the impact resistance are improved; and the two identical undercut cycloid oscillating tooth transmission units are distributed and applied to the speed reducer in a centrosymmetric mode, and the centrosymmetric single-stage undercut cycloid oscillating tooth speed reducer with the dynamic balance characteristic is obtained.

Description

technical field [0001] The invention relates to the technical field of movable tooth transmission, in particular to a center-symmetrical single-stage 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 de...

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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