Optimization method of contact track and transmission error of spiral bevel gear based on installation misalignment

Abstract

The invention discloses a method for optimizing the contact track and transmission error of a spiral bevel gear based on installation misalignment. The invention establishes a group of equations by constraining the assembly conditions and the transmission ratio of the initial point to solve the theoretical installation adjustment value; on this basis, the gear pair is introduced Mounting dislocation, establish a TCA algorithm including mounting dislocation. Taking the installation misalignment as the design variable, the characteristic parameters of contact trajectory and transmission error are preset to establish the objective function, which is solved by nonlinear optimization algorithm. The results show that after optimization, the contact track moves to the small end of the tooth surface, and the contact area will expand to the middle of the tooth surface after loading, which improves the bearing contact performance; the sag deviation and fluctuation amplitude of the transmission error curve are reduced, which is beneficial to avoid edge contact and improve dynamic performance.

Description

Optimization method of contact trajectory and transmission error of spiral bevel gear based on dislocation of installation technical field The invention belongs to mechanical field, relate in particular to a kind of spiral bevel gear contact track and transmission based on dislocation of installation Error optimization methods and methods. Background technique Spiral bevel gears have large coincidence, strong bearing capacity and stable transmission, and are widely used in large ships, precision machinery, and Transmission system of aerospace equipment. Through tooth contact analysis (Tooth Contact Analysis, TCA), it can be obtained to reflect its Key indicators of meshing performance: tooth surface contact imprint and transmission error curve. Due to manufacturing and thermal errors of tooth surfaces and bearings Poor, the actual installation position of the spiral bevel gear will deviate from the theoretical installation position, resulting in installation disloc...

AI Technical Summary

Problems solved by technology

[0005] To sum up, most scholars have devoted themselves to the study of TCA models and algorithms with installation misalignment and the influence of installation misalignment on meshing performance, but they have not paid attention to the reverse calculation of the optimal installation misalignment based on the preset tooth surface contact imprint position and transmission error curve. worth the question

The installation position of the gear pair is very important. The theoretical installation adjustment value is determined by the position of the initial contact point on the tooth surface, but the meshing performance of the gear is not optimal when installed under the theoretical installation adjustment value.

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