A Method of Recovering the Precision of Old Welding Fixtures

Abstract

The invention is used for restoring the precision of old welding fixtures, especially relates to the precision restoration of old welding fixtures in the automobile industry, belongs to the technical field of tooling maintenance, and provides a method for restoring the precision of old welding fixtures. Auxiliary reference pins, newly added detection reference blocks, construction process files, construction of space coordinate system and measurement and final adjustment can be based on existing conditions such as old fixtures, missing 3D digital models, substrate deformation, and failure of the original detection system. Build a fixture detection benchmark system to realize measurable, adjustable, and ability-based control of old fixtures, ensure the quality of the vehicle and prolong the service life of the fixtures, which has the same guiding significance for other types of tooling.

Description

technical field [0001] The invention relates to a method for restoring the precision of old welding fixtures, in particular to a method for restoring the precision of old welding fixtures in the automobile industry, and belongs to the technical field of tooling maintenance. Background technique [0002] Welding fixtures in the automotive industry are affected by gravity, stress, temperature difference between cold and hot, welding spatter, welding torch collision, etc. during use, which will have an impact on the structure and accuracy of the fixture. During long-term use, the deformation of the fixture substrate, the failure of the measurement reference, and the loss of reference accuracy are unavoidable, which will lead to the failure of the precision measurement and daily monitoring of the fixture, resulting in low welding accuracy of the body, affecting the assembly of the vehicle and the perceived quality of appearance , and even affect vehicle performance. [0003] In...

AI Technical Summary

Problems solved by technology

During long-term use, the deformation of the fixture substrate, the failure of the measurement reference, and the loss of reference accuracy are unavoidable, which will lead to the failure of the precision measurement and daily monitoring of the fixture, resulting in low welding accuracy of the body, affecting the assembly of the vehicle and the perceived quality of appearance , and even affect vehicle performance

[0003] In view of the above problems, there are mainly the following two processing methods in the prior art: 1. Adaptive use of the fixture according to the problem of the whole vehicle, and adjust and monitor according to inaccurate measurement values. There are many uncontrollable variable factors in this method , it is difficult to effectively and stably guarantee product quality

2. Copy and remanufacture the fixture, which requires a lot of additional investment

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