Method for testing key performance of drive shaft assembly of constant velocity universal joint

A technology of constant velocity joints and testing methods, applied in the direction of machine gear/transmission mechanism testing, etc., can solve problems such as instability, inability to comprehensively reflect the relative changes of displacement, swing angle and sliding force, and difficulty in ensuring the stability of loading torque. , to achieve the effect of high stability
CN101995333AInactive Publication Date: 2011-03-30上海诚测电子科技发展有限公司
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
上海诚测电子科技发展有限公司
Publication Date
2011-03-30
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to a method for testing the key performance of a drive shaft assembly of a constant velocity universal joint in the technical field of automobile part test. The method comprises: (1) automobile steering equivalent testing: using a Hermite interpolation method to locate a critical point, judging the boundary value of neighborhood of the critical point by a cubic interpolation polynomial, thereby realizing the testing on high precision swing moment and swing angle properties; (2) equivalent testing on integrated relationship of mobile terminal universal joint displacement, swing angle and sliding force: using an inflection point subdivision sampling method and an optimal square approximation method to carry out fitting on the boundary value of the neighborhood of an inflection point by a Legendre polynomial operator, thereby realizing the testing on the integrated relationship of the displacement, the swing angle and the sliding force; and (3) power transmission stability equivalent testing: using a LOG operator to carry out precise edge localization of the boundary position,and using an optimal uniform approximation method to carry out fitting on the boundary property value in the domain of the critical point, thereby realizing the testing on assembly clearance property. In the invention, high precision automatic detection technology and algorithm are used to test multiple key performance indexes, thereby effectively reflecting the performance property of tested products.
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Description

technical field

[0001] The invention relates to a test method in the technical field of auto parts test, in particular to a key performance test method of a constant velocity universal joint drive shaft assembly. Background technique

[0002] The constant velocity universal joint drive shaft is an important link in the automobile transmission system. It is installed between the output shaft of the gearbox and the input shaft of the main reducer of the drive axle for power transmission. Its components include: fixed end universal joint, movable end universal joint and shaft body. The quality of the key performance of the constant velocity universal joint drive shaft assembly directly affects the safety, stability and comfort of driving. In recent years, with the continuous development of my country's automobile industry, the requirements for the key performance of the constant velocity universal joint drive shaft assembly have become higher and higher, especially in terms of...

Claims

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