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Harmonic-reducer flexible-wheel structure design and optimization method

A technology of harmonic reducer and structural design, applied in design optimization/simulation, instrument, calculation, etc., can solve problems such as radial warping of gear teeth, and achieve the effect of low processing cost, realization of design parameters, and improvement of work efficiency

Inactive Publication Date: 2018-10-02
JIANGSU UNIV OF SCI & TECH
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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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  • Harmonic-reducer flexible-wheel structure design and optimization method
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  • Harmonic-reducer flexible-wheel structure design and optimization 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-wheel structure design and an optimization method. The method comprises the following steps: 1) for the problem of radial warping of wheel teeth of existing harmonic flexible wheels after assembly, carrying out similarity and contradiction analysis to form a plurality of initial design schemes; 2) extracting feature values of all the schemes through an FEM method, and carrying out parsing; and 3) using a response surface method and a CCD (Central Composite Design) optimization algorithm for all-domain solving of an optimal scheme. Through theabove steps, the design provides a new form of a flexible-wheel structure with taper, and the taper x / y is better controlled in a range from 1 / 50 to 1 / 30. The design has important significance in aspects of reducing warping of wheel teeth of flexible wheels, and improving a wheel tooth coincidence degree.

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...

Claims

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Application Information

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IPC IPC(8): G06F17/50
CPCG06F30/17G06F30/23
Inventor 陈星王淑妍吕渌渊
Owner JIANGSU UNIV OF SCI & TECH
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