Involute harmonic gear shaping method and harmonic reducer

A harmonic gear and involute technology, applied in the direction of belts/chains/gears, mechanical equipment, transmission devices, etc., can solve problems such as poor meshing effect, difficult tooth shape processing, easy interference, etc., to improve meshing quality, Improve the effect of stress situation and avoid interference

Active Publication Date: 2019-04-30
GUANGZHOU HAOZHI ELECTROMECHANICAL
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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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  • Involute harmonic gear shaping method and harmonic reducer
  • Involute harmonic gear shaping method and harmonic reducer
  • Involute harmonic gear shaping method 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 an involute harmonic gear shaping method, and comprises the following shaping steps that A) a flexible gear shaping step: (1) calculating the gear modulus of the flexible gearthrough a formula; (2) obtaining the tooth profile basic elements of the flexible gear according to the calculation, and drawing the original involute tooth profile of the flexible gear; (3) obtaininga left tooth surface involute tooth profile curve before the flexible gear is not modified according to the tooth profile basic element parameters of the flexible gear, and calculating the shape corrected parameters of the tooth profile of the flexible gear, shaping the tooth top part of the original involute tooth profile of the flexible gear so as to form a smooth curve; and (4) determining a tooth direction correcting parameter according to the tooth width of the flexible gear and the constraint condition that the flexible gear is engaged in or out of the meshing moment and does not generate tooth top interference, correcting the tooth shape in the tooth direction, and completing the final design of the tooth shape. The invention further discloses a harmonic reducer. The harmonic reducer comprises a flexible gear, a rigid gear and a wave generator; and the machining and manufacturing parameters are obtained through calculation according to the shaping method. According to the method and the device, the motion performance of the harmonic gear can be improved, and the manufacturing cost is low.

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 Applications(China)
IPC IPC(8): F16H49/00
CPCF16H49/001
Inventor 庄剑毅汤秀清
Owner GUANGZHOU HAOZHI ELECTROMECHANICAL
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