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Parametric modeling method of face gear teeth

A technology of parametric modeling and face gears, which is applied in electrical digital data processing, special data processing applications, instruments, etc. It can solve the problems that it is not easy to realize parametric modeling and the precision of the tooth surface is not very high, so as to reduce the workload , improve work efficiency, high quality effect

Inactive Publication Date: 2013-11-06
NORTHWESTERN POLYTECHNICAL UNIV
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Problems solved by technology

Compared with the point cloud, this method is easier to implement, and the accuracy of the tooth surface has also been improved. However, because the spline curve fitted by PROE does not pass through all the coordinate points, the error accumulation makes the tooth surface accuracy still not very high, and it is imported into PROE or CAE. It is not easy to implement parametric modeling when converting data or file formats when using software

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  • Parametric modeling method of face gear teeth
  • Parametric modeling method of face gear teeth
  • Parametric modeling method of face gear teeth

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Experimental program
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Embodiment Construction

[0054] 1. Numerical calculation of tooth surface of face gear

[0055] Table 1 Design parameters of orthogonal face gears

[0056]

[0057] 1.1) As shown in Table 1, collect basic parameters. According to the undercut limit point theorem in the principle of gear meshing, the minimum inner diameter of the face gear is 128.4458mm by solving the nonlinear equation set; according to the phenomenon that three tooth surfaces intersecting in pairs in space intersect at one point, the face gear is obtained by solving the nonlinear equation set The maximum outer diameter of the tooth surface is 151.6871mm. The maximum outer diameter-minimum inner diameter>18mm, the solution result converges, which meets the requirements of the tooth width.

[0058] 1.2) The tooth width of the gear after rounding must meet: minimum inner diameter ≥ 129mm, maximum outer diameter ≤ 151mm, maximum outer diameter - minimum inner diameter ≥ 18mm. In this case, the minimum inner diameter and maximum out...

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Abstract

The invention discloses a parametric modeling method of face gear teeth, comprising the following steps: first, calculating tooth surface numerical value of a face gear; then processing tooth surface discrete points coordinate data to directly read in the data to ANSYS environment; and parametrically establishing a gear tooth finite element model after parametrically establishing a gear tooth physical model, thereby obtaining a parametric finite element model. By mixed programming of Matlab and APDL (parametric design language), the method combines functions of face gear teeth width design, tooth surface stimulation, physical modeling, finite element modeling and the like, and realizes parameterization and intellectualization of face gear teeth design and modeling, high quality of finite element model, reduction of workload of designers and improvement of work efficiency.

Description

technical field [0001] The invention relates to a method for parametric modeling of gear teeth. Background technique [0002] Face gear transmission is a new type of gear transmission, which has many unique advantages such as compact structure, high single-stage transmission ratio, large coincidence degree, high torque splitting precision, etc. It is suitable for occasions such as reversing transmission at any angle in space, especially for high-speed and heavy-duty situations , so it has a very broad market and development prospects. However, the tooth surface of the face gear is not a common involute or other common tooth surface, and its geometric shape is very complicated, especially for the helical tooth surface gear, the tooth surface equation cannot be expressed by explicit equations, using CAD / CAE, etc. Parametric modeling of face gear teeth is difficult with commercial software. Therefore, there are few reports on the tooth modeling methods of face gears. [0003...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F17/50
Inventor 郭辉侯圣文赵宁
Owner NORTHWESTERN POLYTECHNICAL UNIV