Transmission shaft machining performance evaluation and key process-based control method

Abstract

The invention relates to a transmission shaft machining performance evaluation and key process-based control method. The method comprises the steps: 1, extracting key process parameters and machiningperformance key evaluation indexes in a transmission manufacturing process; 2, based on simulation and test analysis, obtaining an influence rule of key process control parameters on performance evaluation indexes; 3, researching an influence rule and an influence weight of a processing performance evaluation index on cracks on the basis of obtaining related parameters of crack initiation and expansion of the typical material of the transmission shaft; 4, constructing a transmission shaft service life calculation model by taking the transmission shaft machining performance evaluation index asan intermediate variable; 5, optimizing the key process parameters of the transmission shaft based on a genetic algorithm. Related rules are extracted from historical simulation and test data, the relation among key technological parameters, machining surface quality and cracks is constructed, the surface machining performance can be rapidly predicted and evaluated, the technological parameters can be optimized according to use requirements, and a theoretical basis is provided for high-reliability design and manufacturing of the transmission shaft.

Description

Technical field[0001]The invention belongs to the field of long life transmission element manufacturing, and more particularly to a transmission shaft process performance evaluation and a key process control method.Background technique[0002]The drive shaft is one of the key components in the transmission system such as heavy-duty vehicles, ships such as ships. It is increasing, and the load is complex, and the future vehicles are increasingly required for their mobility, reliability and lightweight requirements. These high performance indicators The design requirements for the drive shaft are also increasing. How to ensure that the service life of the drive shaft on a lightweight basis is an important issue facing future transmission shaft design. The machining surface performance of the drive shaft directly determines its service life, and the surface roughness can directly affect the conveyance shaft stress concentration. The hard surface can hinder the spread of cracks, and the r...

AI Technical Summary

Problems solved by technology

[0003] At present, the evaluation of processing performance is based on individual typical processes, and the evaluation indicators are limited, which cannot meet the life evaluation requirements of the transmission shaft.

In addition, process optimization is carried out for a single process, ignoring the influence of other process parameters. Such an evaluation is one-sided and inaccurate. It is difficult to accurately optimize process parameters and cannot guarantee the overall working life.

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