Detection equipment for welding spot failure of whole set of white vehicle body

Abstract

The invention relates to detection equipment for welding spot failure of a whole set of white vehicle body. The detection equipment comprises a white vehicle body welding assembly, a vibration exciter and an acceleration sensor, wherein the white vehicle body welding assembly is fixedly arranged on a rack through a special clamp system; one side of the vibration exciter is connected with a data control and acquisition system; the other side of the vibration exciter is a free end for vibration excitation; the acceleration sensor is attached to a key part of the white vehicle body to be detected by using a magnet; the data control and acquisition system is connected with the acceleration sensor and is used for simply processing the acquired voltage signal and then transmitting data to a microcomputer; the data control and acquisition system and the microcomputer form a data detection and analysis system, i.e. an MIMO (Multiple Input Multiple Output) system; and the MIMO system integrates a signal acquisition system and can be used for modal analysis and damage identification of residual force vector as well as can be used for sampling, analyzing and processing the signal acquired in a current area to obtain an accurate detection result.

Description

technical field [0001] The invention relates to the technical field of engineering testing, in particular to a complete set of welding spot failure detection equipment for a body in white. Background technique [0002] In the process of automobile manufacturing industry, the level of automobile manufacturing is mainly reflected in two aspects, one is the level of appearance quality, and the other is the mechanical properties of the automobile itself. In the existing technology, the level of appearance quality can be evaluated quickly through subjective judgments and three-dimensional coordinates, but the mechanical properties of the car itself cannot be predicted and evaluated by the naked eye or equipment. Among them, it is mainly predicted through the strengthening test of the road surface. In automobile manufacturing, spot welding has become the main connection process method in the automobile manufacturing industry, and plays an irreplaceable important role in the autom...

AI Technical Summary

Problems solved by technology

But it is not easy to operate and offline detection cannot provide feedback information in time

Mechanical destructive testing is to mechanically destroy the solder joints, and check the defects from its strength and fracture surface. Obviously, this method cannot be used for the failure detection of solder joints in the body-in-white.

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