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Flexible gear structure designing and optimizing method

A technology of structural design and optimization method, applied in the direction of design optimization/simulation, calculation, special data processing application, etc., can solve problems such as radial warpage of gear teeth, achieve low processing cost, realize design parameters, and simple structure

Inactive Publication Date: 2018-08-28
长沙大衡智能科技有限公司
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AI Technical Summary

Problems solved by technology

[0006] Step 1. Aiming at the problem of radial warping of the teeth after assembly of the existing harmonic flexspline, analyze the similarity and contradiction, and form a variety of initial design schemes;

Method used

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  • Flexible gear structure designing and optimizing method

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Embodiment Construction

[0019] A method for designing and optimizing a flexible wheel structure of a harmonic reducer, specifically comprising the following steps:

[0020] The first step, initial scheme design

[0021] 1.1 For the contradictory analysis of tooth warpage, four different forms of flexspline models are established, such as figure 1 shown;

[0022] The second step, eigenvalue solution and solution screening

[0023] 2.1 Use the interactive interface to import the model assembled with the wave generator into Ansys Workbench (AW), apply fixed constraints on the left end surface of the flexspline and the inner hole of the wave generator, and use a hexahedral mesh as a whole to define the inner wall of the flexspline and the wave generator There is no friction between the contact surfaces of the outer wall of the device, the normal contact stiffness is 0.01, and the limited penetration depth is 0.01mm, such as figure 2 shown;

[0024] 2.2 The path direction of the flexspline tooth defi...

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Abstract

The invention provides a harmonic reducer flexible gear structure designing and optimizing method. The harmonic reducer flexible gear structure designing and optimizing method comprises, firstly, forsolving the problem that existing harmonic flexible gears have radial warping of gear teeth after being assembled, performing similarity and contradiction analysis to acquire a number of initial design schemes; extracting the eigenvalues of every scheme through FEM (finite element method) for analysis; performing universal solution of an optimal scheme through response surface analysis and CCD (cyclic-coordinate descent) algorithm. The flexible gear structure designing and optimizing method designs a novel form of tapered flexible gear structure and is of great significance to reducing tooth warping of flexible gears and improving the contact ratio of teeth of the flexible gears.

Description

technical field [0001] The invention belongs to the field of structure design of precision gears, and in particular relates to a structure design and optimization method of a harmonic reducer flex wheel. Background technique [0002] The harmonic reducer is the core transmission component of the light joint robot. The flexible spline produces controllable elastic deformation through the cam-type wave generator, and meshes with the rigid spline at the long axis to transmit motion and power. Since the flexible spline undergoes thousands of repeated deformations per minute, the quality of its structural design directly determines the bearing capacity and fatigue life of the reducer. [0003] At present, the flexspline structure faces two major problems: 1. The flexspline undergoes fatigue deformation for a long time, and the structure is prone to failure or even damage; 2. The warping of the flexspline teeth affects the meshing accuracy, which may easily cause tooth surface we...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
CPCG06F30/17G06F30/23
Inventor 不公告发明人
Owner 长沙大衡智能科技有限公司
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