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Modification Method of Involute Harmonic Gear and Harmonic Reducer

A harmonic gear and involute technology, applied in belts/chains/gears, transmissions, mechanical equipment, etc., can solve the problems of poor meshing effect, difficult tooth shape processing, easy interference, etc., to improve meshing quality, Low difficulty and cost, the effect of improving the stress situation

Active Publication Date: 2021-04-30
GUANGZHOU HAOZHI ELECTROMECHANICAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] (1) Although it can improve the meshing condition of the harmonic gear tooth profile, there are problems such as difficult tooth profile processing and high cost
[0008] (2) Good meshing effect cannot be obtained on the entire length of the teeth
[0009] (3) The part of the involute tooth profile close to the tooth top has not been properly modified, and there is a phenomenon that it is easy to interfere

Method used

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  • Modification Method of Involute Harmonic Gear and Harmonic Reducer
  • Modification Method of Involute Harmonic Gear and Harmonic Reducer
  • Modification Method of Involute Harmonic Gear and Harmonic Reducer

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Embodiment Construction

[0057] Below, the present invention will be further described in conjunction with the accompanying drawings and specific implementation methods. It should be noted that, under the premise of not conflicting, the various embodiments described below or the technical features can be combined arbitrarily to form new embodiments. .

[0058] Such as Figure 1-5 As shown, the modification method of the involute harmonic gear, the harmonic gear includes the flexible spline 2 and the rigid spline 1, the modification method includes the following modification steps,

[0059] A) Modification steps of flexspline 2:

[0060] (1) Calculate the gear modulus m of flexspline 2 by the following formula r ,

[0061] m r =(d rn +2δ r ) / [Z r -2(h ra +c r )],

[0062] Among them, Z r is the number of teeth of the flex spline, h ra is the addendum height coefficient of the flexible spline, c r is the flexspline head clearance coefficient, d rn is the inner hole diameter of flexspline g...

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Abstract

The invention discloses a method for modifying the shape of an involute harmonic gear, which includes the following modification steps, A) the step of modifying the flexspline: (1) calculating the gear modulus of the flexspline through a formula; The basic elements of the tooth shape of the flexspline, draw the original involute tooth shape of the flexspline; (3) According to the parameters of the basic elements of the tooth shape of the flexspline, the involute tooth profile curve of the left tooth surface of the flexspline before modification is obtained, according to Calculate the modification parameters of the flexspline tooth shape, and modify the tooth top part of the original involute tooth profile of the flexspline to form a smooth curve; (4) According to the tooth width of the flexspline and the moment of meshing in or out The constraint condition of no addendum interference determines the tooth profile correction parameters, and corrects the tooth profile in the profile direction to complete the final design of the tooth profile. It also discloses a harmonic reducer, including a flexible spline, a rigid spline and a wave generator; its manufacturing parameters are calculated by the above-mentioned modification method. The invention can improve the motion performance of the harmonic gear and has low manufacturing cost.

Description

technical field [0001] The invention relates to the structural design of a harmonic reducer, in particular to a method for modifying an involute harmonic gear and a harmonic reducer. Background technique [0002] Such as figure 1 and figure 2 As shown, the harmonic reducer is mainly composed of a harmonic gear and a wave generator 3, and the harmonic gear includes a rigid spline 1 and a flexible spline 2, and its working principle is to make the flexible spline 2 produce a controllable The elastic deformation wave, through the interaction with the rigid wheel 1, realizes the transmission device of motion and power transmission. [0003] Generally, the flexible spline 2 is designed as an external tooth, and the rigid spline 1 is designed as an internal tooth. The rigid spline 1 has 2n more teeth than the flexible spline 2, where n is a positive integer. The wave generator 3 is composed of a cam 31 and a flexible bearing 32, wherein the profile of the cam 31 is an ellipse ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16H49/00
CPCF16H49/001
Inventor 庄剑毅汤秀清
Owner GUANGZHOU HAOZHI ELECTROMECHANICAL