Detection device and method for machine cover on body-in-white

Abstract

The invention relates to a detection device with a machine cover on a body in white, and belongs to the technical field of automobile detection. It includes a front retaining frame assembly and a front retaining frame dummy, the front retaining frame assembly includes a first bracket, a second bracket, a third bracket and a fourth bracket connected in sequence to form a rectangular frame structure, the first bracket The two ends are provided with a positioning structure for positioning with the vehicle body in the Z direction, and the second bracket and the fourth bracket are provided with a slider mechanism, and the slider mechanism is provided with a first fixing structure for fixing with the vehicle body in the Z direction. Positioning pins for X-direction and Y-direction positioning, X-direction adjustment and locking mechanism, and Y-direction adjustment and locking mechanism. The third bracket is provided with a second fixing structure for fixing with the front retaining frame dummy. The invention has precise positioning and can effectively shorten the size chain.

Description

technical field [0001] The invention belongs to the technical field of automobile detection, and in particular relates to a detection device and a detection method for a machine cover on a body in white. Background technique [0002] After the welded body-in-white is painted and finally arrives at the final assembly shop, a series of interior and exterior trims need to be assembled, including the front bumper. In order to ensure the geometric dimensions between the front bumper assembled in the assembly shop and the hood and fender assembled in the welding shop, it is necessary to simulate the loading state of the final assembly in the welding shop, and to compare the body-in-white hood and front bumper The geometric dimensions such as the gap and surface difference between them are monitored to ensure the stability of the final assembly. The above detection methods need to be realized by the hood function inspection tool. The inspection tools mainly include the assembly s...

AI Technical Summary

Problems solved by technology

[0003] The existing front frame assembly is completely installed on the body. The body not only provides 4 Z-direction positioning of the false front frame assembly sample rack, but also provides 2 X-direction and 1 Y-direction positioning. This positioning method, The positioning pin must be made into a fixed pin, which will cause the wrong hole between the positioning pin and the positioning hole of the vehicle body in the early stage of the project and cannot be used, and the weight of the inspection tool cannot be well controlled; and the X and Y directions are placed on the vehicle body, and the positioning The assembly tolerance of the body-related positioning parts is added to the system, which undoubtedly lengthens the dimensional chain, increases the assembly tolerance of the inspection tool, and reduces the inspection accuracy of the inspection tool

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