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Optimal Method for Modification of Involute Spur Gears

A technology of involute gears and spur gears, applied in the field of gear manufacturing, can solve the problems of no parameterization, low precision, complicated modification methods, etc., and achieve the effect of prolonging the life of the gear, high precision and small transmission error.

Inactive Publication Date: 2017-12-01
梅文杰
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Without using the theoretical involute, the modification method is complicated, and there is no parameterization, and the precision is low

Method used

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  • Optimal Method for Modification of Involute Spur Gears
  • Optimal Method for Modification of Involute Spur Gears
  • Optimal Method for Modification of Involute Spur Gears

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Embodiment Construction

[0036] In order to clearly illustrate the technical features of the present invention, the solution is described below through a specific implementation manner.

[0037] Using the involute equation, combined with the parametric drawing function of AUTOCAD, the two-dimensional diagram of the standard involute spur gear is drawn through basic drawing commands, such as figure 1 shown. Import it into ANSYS, and get the three-dimensional diagram of the standard involute spur gear through the stretch command.

[0038] like figure 2 As shown, modify the shape of the AUTOCAD two-dimensional drawing obtained above. For a single tooth, A is the modification point in the tooth length direction, and B is the modification point in the tooth profile direction. Point A is equidistantly modified according to 2%-10% of the straight line length from the rightmost point on the tooth top to the Y axis, and point B is modified according to 10% of the partial involute length from the tooth root...

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PUM

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Abstract

The invention provides an involute straight tooth gear modification optimization method; and the method comprises the steps of: building engaged three-dimensional gear pair models; primarily selecting modification optimization parameters; respectively performing the primary modification processing for the three-dimensional gear pair models; performing the primary modification optimization analysis to obtain optimal primary analysis optimization parameters; obtaining more precise optimization samples in finite element analysis software according to the optimization parameters; and screening the samples. After screening, the secondary modification processing is performed for a pair of standard three-dimensional involute gears to obtain multiple sets of secondarily processed optimization parameters, optimal modification optimization gear parameters, one set of parabola modification and one set of arc modification; the three-dimensional diagram drawing is performed for gears optimized by the secondarily processed optimization parameters; and optimally modified three-dimensional diagrams are leaded in a numerical control machine tool to machine blanks to finished products. The method is more precise in modification, is more obvious in optimization effect, can preferably reduce the engagement noise and vibration, and reduces such adverse effects as load concentration.

Description

technical field [0001] The invention relates to a gear manufacturing method, in particular to an involute spur gear modification and optimization method. Background technique [0002] The standard involute spur gear is a widely used gear transmission method. However, due to elastic deformation or machining errors during the meshing process, the actual meshing tooth surface deviates from the ideal value, resulting in uneven meshing and noise. Through gear modification, the problems mentioned above can be alleviated. Through shape modification, although theoretically deviate from the ideal meshing surface, in the actual meshing process, due to elastic deformation, the deviation from the theory caused by the actual shape change can be effectively reduced, and the tooth surface has a more reasonable stress distribution. [0003] The processing methods of traditional involute spur gears include planing method, double-cutter milling method and circular drawing method. The above-...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16H55/08
CPCF16H55/0806
Inventor 梅文杰申桂可杨小鸣刘绍玮向山乔陈加伟
Owner 梅文杰
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