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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

Inactive Publication Date: 2016-04-20
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, from the perspective of the transmission principle, the meshing state of the cycloidal wheel and the pin teeth is not very ideal, basically contacting a small area at the top of the pin teeth, the pressure angle is large, and the force is not good.

Method used

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  • High-contact-ratio internal-gearing cycloidal gear mechanism
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  • High-contact-ratio internal-gearing cycloidal gear mechanism

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] like figure 1 shown.

[0022] 1—cycloid internal gear, number of teeth z 1 =45, 2—cycloidal external gear, number of teeth z 2 =37, modulus m=5, take the arc radius of meshing line r=101.7683. It can be seen from the figure that no matter which direction the transmission is in, the number of meshing teeth reaches 7 pairs at the same time.

Embodiment 2

[0024] 1-tooth difference planetary gear mechanism, such as figure 2 , 3 shown.

[0025] 1—cycloid internal gear, number of teeth z 1 =40, 2—cycloid external gear, number of teeth z 2 =39, modulus m=3, take the arc radius of meshing line r=59.25. A pair of identical cycloidal external gears 2 are installed symmetrically, axially staggered, and meshed with the cycloidal internal gear 1 at the same time. image 3 Middle 3—two-way eccentric shaft, used to support two external gears 2 to mesh with internal gear 1 respectively. Assuming that the cycloidal internal gear 1 is fixed and the eccentric shaft 3 is used as the input shaft, that is, the motion is input from it, then the cycloidal external gear 2 will move in a plane, that is, it will perform a circular translation motion around the axis of the cycloidal internal gear 1, and because it is connected with the pendulum The internal gear 1 meshes to make a rotary motion around its own axis. 4—the output mechanism, which ...

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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.

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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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16H1/32F16H55/17F16H55/08
CPCF16H55/17F16H1/32F16H55/0826F16H2001/327F16H2055/176
Inventor 贾萌
Owner 贾萌
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