Spur gear profile modification method based on thermal elastic deformation of gear teeth and deflection deformation of gear

A thermoelastic, spur gear technology, applied to components with teeth, belts/chains/gears, portable lifting devices, etc., to improve the uniform load distribution on the tooth surface, improve the modification accuracy, and extend the uniform stress distribution of the gears Effect

Active Publication Date: 2017-08-08
SHANXI PINGYAO REDUCER
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Problems solved by technology

[0004] The purpose of the present invention is to provide a method for modifying cylindrical spur gears based on thermoelastic deformation of gear teeth and skew deformation of gears, so as to solve the above-mentioned deficiencies in the background technology

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  • Spur gear profile modification method based on thermal elastic deformation of gear teeth and deflection deformation of gear
  • Spur gear profile modification method based on thermal elastic deformation of gear teeth and deflection deformation of gear
  • Spur gear profile modification method based on thermal elastic deformation of gear teeth and deflection deformation of gear

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[0056] In order to make it easy to understand the technical means, innovative features, work flow, and implementation methods of the present invention to achieve the purpose and effect, the present invention will be further described below in conjunction with specific examples.

[0057] A method for modifying the tooth profile of cylindrical spur gears based on thermoelastic deformation of gear teeth and skew deformation of gears. The detailed steps are as follows:

[0058] Step 1: Establish a 3D model of the gear based on UG, the gear parameters are shown in Table 1, and the 3D model is shown as Image 6 Shown:

[0059] Table 1 gear parameters

[0060]

[0061] Step 2: Import the 3D model of the gear into the finite element software Workbench to analyze the thermoelastic deformation of the gear under the loading condition. The basic working condition parameters are 3000N / m and 4500r / min. The results are as follows Figure 7 shown.

[0062] Step 3: Establish the overall 3D...

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Abstract

The invention discloses a spur gear profile modification method based on thermal elastic deformation of gear teeth and deflection deformation of a gear. The spur gear profile modification method comprises the following steps: 1, establishing a three-dimensional model of a gear based on UG; 2, introducing the gear three-dimensional model into finite element software, and analyzing thermal elastic coupling deformation of the gear under a working condition; 3, establishing an overall three-dimensional model of a gearbox based on UG; 4, introducing the three-dimensional model of the gearbox into the finite element software, and analyzing stress deformation of the gearbox under a working condition; 5, analyzing deformation of a tooth surface in different directions because of comprehensive deformation of the gearbox, and analyzing deformation characteristics; 6, taking influence characteristics of the thermal elastic deformation and deflection deformation inside different planes of the gear to tooth surface stress into profile modification; and 7, taking the thermal elastic deformation and the deflection deformation of the tooth surface inside a tangent plane into account, acquiring a profile modification curved surface equation, and performing profile modification. By adopting the method, the modification precision of a spur gear working under a high-speed heavy load working condition is improved, the uniform distribution situation of a tooth surface load is effectively improved, and the service life of the gear is prolonged.

Description

technical field [0001] The invention relates to a gear modification method, in particular to a cylindrical spur gear tooth profile modification method based on the thermoelastic deformation of the gear teeth and the skew deformation of the gear. Background technique [0002] For gears under high-speed and heavy-load conditions, each component of the gearbox will undergo stress deformation, and the gear thermoelastic deformation will be obvious. These deformation factors also have a greater impact on the gear meshing. If the deformation is too large, the transmission quality of the gear cannot be guaranteed. . However, these unfavorable factors are generated during the operation of the gearbox, so it is not easy to control. In order to eliminate or reduce these deformation factors to a certain extent, so as to ensure the gear transmission accuracy and prolong the life of the gear, it is necessary to modify the gear for the thermoelastic deformation and the deformation of the...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50F16H55/08
CPCF16H55/088G06F30/17G06F30/20
Inventor 张瑞亮王道勇王铁武志斐
Owner SHANXI PINGYAO REDUCER
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