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Arc cycloid harmonic tooth profile, generation method and device thereof and storage medium

A technology of tooth shape and arc, applied in hoisting devices, transmission devices, portable lifting devices, etc., to achieve the effects of improving precision and life, increasing space load bearing capacity, and increasing the bending fatigue strength of tooth roots

Active Publication Date: 2021-01-29
WUHAN UNIV OF TECH +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of this, it is necessary to propose a cycloidal harmonic tooth profile to solve the problem of how to propose a tooth profile that can effectively improve precision and reduce wear

Method used

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  • Arc cycloid harmonic tooth profile, generation method and device thereof and storage medium
  • Arc cycloid harmonic tooth profile, generation method and device thereof and storage medium
  • Arc cycloid harmonic tooth profile, generation method and device thereof and storage medium

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Embodiment 1

[0049] The embodiment of the present invention provides an arc cycloidal harmonic tooth profile, which combines figure 1 , figure 2 look, figure 1 A schematic diagram of the shape of the cycloidal harmonic tooth profile provided by the present invention, figure 2 Schematic diagram of the rigid wheel tooth profile of the arc cycloid harmonic tooth profile provided by the present invention, wherein:

[0050] The tooth profile of the flexspline tooth type includes the flexspline tooth top, flexspline common tangent, flexspline tooth bottom, and flexspline dedendum transition arc, where the flexspline tooth top and flexspline tooth root transition arc are circular The arc curve, the bottom of the flexspline is a trochoidal curve, and the common tangent of the flexspline is used for a smooth transition between the top of the flexspline and the bottom of the tooth of the flexspline;

[0051] The tooth profile of the steel wheel tooth type includes the tooth top of the steel whe...

Embodiment 2

[0056] An embodiment of the present invention provides a method for generating a cycloidal harmonic tooth profile, which is used to generate the cycloidal harmonic tooth profile as described above, combined with image 3 look, image 3 It is a schematic flow chart of the generation method of the cycloidal harmonic tooth profile provided by the present invention. The above generation method includes steps S1 to S3, wherein:

[0057] In step S1, the flexspline coordinate system is established with the intersection of the flexspline neutral plane and the flexspline tooth symmetry axis as the coordinate origin, and the flexspline tooth symmetry axis as the Y axis;

[0058] In step S2, according to the shape tooth profile parameters of the flexspline tooth top, flexspline common tangent, flexspline tooth bottom and flexspline dedendum arc, determine the corresponding flexspline tooth profile coordinates respectively;

[0059] In step S3, according to the coordinates of the tooth p...

Embodiment 3

[0113] An embodiment of the present invention provides a cycloidal harmonic tooth profile generating device 800, which is used to generate the cycloidal harmonic tooth profile as described above, including:

[0114] The coordinate establishment unit 801 is used to establish the flexspline coordinate system with the intersection point of the flexspline neutral plane and the flexspline tooth symmetry axis as the coordinate origin, and the flexspline tooth symmetry axis as the Y axis;

[0115] The first processing unit 802 is used to determine the corresponding flexspline tooth profile coordinates according to the shape and profile parameters of the flexspline tooth top, flexspline common tangent, flexspline tooth bottom and flexspline dedendum arc;

[0116] The second processing unit 803 is configured to determine the corresponding point coordinates of the conjugate tooth profile of the rigid wheel through the harmonic drive envelope conjugate theory according to the tooth profil...

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Abstract

The invention relates to an arc cycloid harmonic tooth profile, a generation method and device thereof and a storage medium. The method comprises the steps that a flexible gear coordinate system is established; according to the shape tooth profile parameters of a flexible gear tooth top arc, a flexible gear common tangent, a flexible gear tooth bottom horizontal cycloid and a flexible gear tooth root transition arc, corresponding flexible gear tooth profile coordinates are determined correspondingly; a corresponding flexible gear tooth profile is determined according to the flexible gear toothprofile coordinates and preset harmonic transmission parameters, and rigid gear tooth profile points are determined according to the flexible gear tooth profile; and parameter fitting is performed onthe rigid gear tooth profile points, and a corresponding rigid gear tooth profile curve equation is determined. The flexible gear tooth top adopts arc curves, so that the tooth profile bearing capacity is ensured; the flexible gear tooth bottom adopts a flat cycloid curve, so that the gear tooth meshing conjugate interval and the tooth root bending fatigue strength are increased; sharp point contact and tooth profile interference of the flexible gear in the engaging-in and engaging-out processes are reduced by adopting a tooth root transition arc; and the actual meshing condition is considered, a conjugate rigid gear curve is solved by utilizing a harmonic drive envelope conjugate theory, and complete conjugation is ensured.

Description

technical field [0001] The invention relates to the technical field of harmonic gear transmission, in particular to an arc cycloidal harmonic tooth profile and a generating method, device and storage medium thereof. Background technique [0002] Involute tooth profile and double arc tooth profile are the most widely used harmonic drive tooth profiles. Among them, the manufacturability of the involute tooth shape is better. This tooth shape is the most perfect tooth shape in theory and technology. Due to the bending and deformation of the flexspline during the meshing process of the harmonic drive, the The meshing of the gear teeth is approximately conjugate, which will produce sharp point meshing and edge contact, which will reduce the transmission accuracy and aggravate the wear of the gear teeth. The double-arc tooth shape is composed of two different arcs and their common tangents. The tooth groove is wider than the involute tooth shape, which reduces the stress concentr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16H55/08F16H55/17F16H49/00
CPCF16H55/0826F16H55/17F16H49/001F16H2049/003
Inventor 陈满意罗阳张杰
Owner WUHAN UNIV OF TECH
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