Dynamic reliability-based gear system tolerance optimization calculation method

Abstract

The present invention provides a dynamic reliability-based gear system tolerance optimization calculation method. The method comprises a first step of modeling for gear system tolerance degradation, analyzing a design requirement of the gear system and processing routing, and determining a processing characteristic, a distribution characteristic and a cost characteristic of each sensitive tolerance parameter and a time-based degradation rule; a second step of determining a general stress model of the gear system; a third step of determining a strength degradation model of the gear system; a fourth step of calculating dynamic reliability; a fifth step of building a tolerance optimization model; and a sixth step of determining an optimal tolerance. Dynamic reliability is introduced to the field of gear system tolerance optimization, so that the traditional optimization model with total mass loss as the target is changed, and the working capability of the gear system can be evaluated more scientifically and objectively.

Description

technical field [0001] The invention belongs to the field of gear system tolerance optimization design, in particular to a gear system tolerance optimization method based on dynamic reliability. Background technique [0002] Tolerance optimization generally refers to modifying product tolerances on an existing basis through historical information and engineering experience to meet various user needs. Accurate tolerance optimization plays a very important role in the improvement of design schemes, feasibility analysis, life cycle cost estimation, and maintenance support planning arrangements. [0003] The traditional gear tolerance optimization method is the mass loss function method, and the optimization design is carried out with the goal of minimizing the total mass loss. According to the impact of the fluctuation of each tolerance parameter of the gear on the quality characteristics of the product, this method considers whether it is necessary to give a smaller tolerance...

AI Technical Summary

Problems solved by technology

However, the traditional mass loss function method does not consider the degradation of tolerance parameters in the whole life cycle, the degradation effect of gear system performance reliability, and the synergistic effect of various production and assembly tolerances on performance reliability.

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