Fixing-point stiffness testing method of front and rear covers of automobile

A test method and fixed point technology, applied in the field of vehicle inspection, can solve the problems of inconvenient operation, high labor intensity, human error, etc., and achieve the effect of ensuring accuracy, high degree of automation, and ensuring safety
CN109238601AInactive Publication Date: 2019-01-18ZHAOQING UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
ZHAOQING UNIV
Publication Date
2019-01-18
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to a fixing-point stiffness testing method of front and rear covers of an automobile, and belongs to the technical field of vehicle detection. A stiffness testing platform of thefront and rear covers is used for testing. The method includes the specific steps of: firstly restraining a vehicle body-in-white; then installing a loading electric cylinder of fixing-point stiffness testing of the front and rear covers of the automobile to use the same as a servo drive loading unit; carrying out loading testing of X, Y and Z directions on the front and rear covers according toa preset loading scheme of a control system, wherein different loading schemes are selected and used according to different automobile models and different models of front and rear covers of automobiles; making force-displacement stiffness performance curves of a loading process and an unloading process according to collected force and displacement data after loading completion, and obtaining a residual deformation amount at the same time; and checking equipment normality after testing completion, and then turning off the equipment according to a reverse order of a starting-up order. In testing of the invention, tension loading and pressure loading of the three directions are carried out on hinging points of the front and rear covers, stiffness testing can be carried in an omnidirectionalmanner on the hinging points of the front and rear covers, and accuracy of testing is improved.
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Description

technical field

[0001] The invention relates to a method for testing the rigidity of a fixed point of a front and rear cover of an automobile, belonging to the technical field of vehicle detection. Background technique

[0002] In order to ensure the driving safety of the car, when a new model is developed or a new car is produced, it is necessary to test the static stiffness of the parts on the body to observe the pressure and tension of these parts under different loads and directions. The deformation that occurs and the maximum pressure and tension it can withstand.

[0003] The front and rear covers of the car, that is, the hood and trunk cover of the car, are hinged with the main body bracket of the car body. The good stiffness of the hinge point between the front and rear covers of the car and the main body bracket of the car body is the prerequisite for ensuring the long-term stable operation of the front and rear covers of the car. . Therefore, it is necessary to c...

Claims

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