High-contact-ratio internal-gearing cycloidal gear mechanism

A cycloidal gear and internal gear technology, which is applied in the direction of gear transmission, belt/chain/gear, mechanical equipment, etc., can solve the problem of large pressure angle, poor force, and unsatisfactory meshing state of cycloidal gear and needle teeth. and other problems, to achieve the effect of improved bearing capacity, easy realization of manufacturing process and simple structure
CN105508521AInactive Publication Date: 2016-04-20贾萌
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
贾萌
Publication Date
2016-04-20
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a high-contact-ratio internal-meshing cycloidal gear mechanism which is composed of a cycloidal internal gear and a cycloidal external gear, wherein the cycloidal external gear is arranged in the cycloidal internal gear and meshes with the cycloidal internal gear; the meshing line of the cycloidal internal gear and cycloidal external gear is a circular arc; assuming that the circular arc radius of the meshing line is r, the pitch radius of the cycloidal internal gear is r1 and the pitch radius of the cycloidal external gear is r2, r1>r>r2; and when the meshing line respectively rolls around the pitch circle of the cycloidal internal gear and the pitch circle of the cycloidal external gear, one point on the meshing line respectively produces two gear tooth apical tooth profiles. A plurality of pairs of teeth simultaneously participate in the meshing in the transmission process, and the pressure angle is small, so that the carrying capacity of the mechanism is greatly enhanced. The tooth root part of the gear basically does not participate in meshing, the tooth profiles can be flexibly designed according to the structural requirements, thereby avoiding the problems of undercut and the like. The high-contact-ratio internal-meshing cycloidal gear mechanism has the advantages of simple structure and fewer parts; and the manufacturing technique is easy to implement.
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Description

technical field

[0001] The invention relates to a gear mechanism, in particular to an inner meshing cycloid gear mechanism. Background technique

[0002] Cycloidal gear transmission appeared very early and was widely used. After the appearance of involute gear transmission, many fields were replaced by the latter, but cycloid gear transmission still plays an important role in clocks, instruments, blowers, compressors and other fields. Location. The tooth profile of a traditional cycloidal gear is generated by a circular meshing line. The tooth top and dedendum are composed of two different curves, the epicycloid and the hypocycloid. The slip rate at any point on the tooth profile is equal during meshing transmission, but for The center distance error is more sensitive.

[0003] The internal meshing gear pair consists of an external gear and an internal gear, which can realize fixed shaft or planetary transmission. No matter what kind of tooth profile the traditional inter...

Claims

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