Vehicle body online matching method

Abstract

The invention belongs to the technical field of automobile body geometric quality breeding, and relates to an automobile body online matching method. The method comprises the steps: 1, fixing a matching tool and parts, and fixing measuring equipment; 2, calibrating the precision of measurement equipment and establishing a coordinate system; 3, measuring the position degree of a related pin and surface of the tool; 4, measuring the position degree, the coaxiality, the parallelism error or the distance of the related holes and surfaces of the parts; 5, analyzing the reason of the problem and exporting a measurement report; 6, adjusting the tool, and manually repairing the parts; 7, repeating the steps 1 to 6; 8, obtaining the true cause of the problem. In the prior art, the tool and part data provided by default suppliers are accurate, red lead powder and plasticine need to be used for confirming interference and gap values in matching of parts, the working efficiency is low, and problemrecognition is inaccurate. The measuring equipment is used for measuring tools and parts on line, data deviation is determined through measurement, whether problems exist or not is directly displayed, problem recognition is accurate, the working efficiency is high, and adjustment and manual repair amount are very easy to determine.

Description

technical field [0001] The invention belongs to the technical field of geometric quality cultivation of automobile bodies, and relates to an online matching method for automobile bodies. Background technique [0002] At present, the dimensional breeding work mode in the preparation stage of new model production is based on the data vehicle as the carrier, with single-piece and assembly inspection tools and three-coordinates as the main detection means, through multiple rounds of part rectification, tooling and process optimization, to achieve the body-in-white Quality goal. From finding problems to solving problems, the analysis efficiency is low and the verification cycle is long, which is not conducive to shortening the production preparation cycle. [0003] The existing technology often assumes that the tooling and parts data provided by the supplier are accurate, and red lead powder and plasticine are used to confirm the interference and gap values ​​for matching betwee...

AI Technical Summary

Problems solved by technology

From finding problems to solving problems, the analysis efficiency is low and the verification cycle is long, which is not conducive to shortening the production preparation cycle

[0003] The existing technology often assumes that the tooling and parts data provided by the supplier are accurate, and the matching between parts needs to use red lead powder and plasticine to confirm the interference and clearance value, which leads to low work efficiency and inaccurate problem identification

[0004] The defects and deficiencies of the traditional body matching technology mainly include three aspects: first, to confirm the problem phenomenon on the production line or the inspection tool, it is necessary to combine the data sheet or the data deviation analysis on the parts to analyze the cause, and the work efficiency is low; second, the production line When adjusting the fixture, the accuracy after adjustment cannot be fed back in time, and the thickness of the gasket can only be estimated; third, the manual repair verification of the parts on the production line or the inspection tool cannot quickly confirm the manual repair effect

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