Modeling method of asymmetric spur gear pair

Abstract

The invention relates to a modeling method of an asymmetric spur gear pair. The modeling method includes firstly calculating coordinates of equant key points on a gear profile by a gear profile of an asymmetric spur gear, creating gear profile key points by ANSYS software, generating a gear profile sample curve of the key points, setting up a single-gear end face, an integral-gear end face, a solid asymmetric spur gear model and an asymmetric spur gear transmission pair model, finally dividing finite element grids and setting dynamic constraints and load to obtain an asymmetric spur gear transmission pair finite element model. The integral modeling process realizes parameterization, and finite element modeling quality of a gear transmission system as well as analysis efficiency is greatly improved.

Description

technical field [0001] The invention relates to a gear finite element modeling method based on explicit dynamic analysis, in particular to a finite element modeling method of a double pressure angle asymmetric cylindrical spur gear pair. Background technique [0002] In one-way transmission, increasing the pressure angle of the pressure side of the tooth surface makes the tooth surface of the pressure side and the tooth surface of the non-pressure side form an asymmetric distribution, which can significantly improve the coincidence degree of the gear transmission, reduce the contact stress of the gear, and the The root bending stress and the gear shaft constrain the reaction force, thereby improving the stability of gear transmission. Asymmetric gears are a new type of gears that can effectively improve the performance and load-carrying capacity of gear teeth. The dynamic numerical simulation analysis of asymmetric gear transmission is one of the effective methods to study ...

AI Technical Summary

Problems solved by technology

Traditional modeling methods are difficult to achieve geometric modeling of asymmetric gears. It is easy to lose part of the geometric information when the geometric model is transferred to finite element software, and each modeling can only establish a model for a single specific type of gear. Increased the workload of gear research and design analysis using finite element technology

Traditional finite element analysis mostly realizes the meshing between single teeth of gears or between single teeth and racks. The analysis is usually based on static analysis of multiple meshing states, which belongs to pseudo-dynamic analysis and cannot realize continuous dynamic simulation analysis of a complete rotation cycle of gears.

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