Most welding tools are specially designed for the assembly and welding process of a welding assembly. They are non-standard equipment and often need to be designed and manufactured according to the characteristics of product organization, production conditions and your actual needs. Welding fixture design is one of the important contents of production preparation and one of the main tasks of welding production process design. For automobile, motorcycle, airplane and other manufacturing industries, it is no exaggeration to say that there is no product without welding tools. In the process design, the required fixture type, structure sketch and brief description are put forward, and on this basis, the detailed structure and parts design and all drawings are completed.

The quality of tooling design directly affects production efficiency, processing cost, product quality and production safety. Therefore, practicality, economy, reliability and artistry must be considered when designing welding tooling.

In the process of mechanical design and manufacturing, the problem of dimension chain is common. In the process of assembling parts into machines, that is, the related dimensions on parts are combined and accumulated. Because there are manufacturing errors in the size of parts, there will be error synthesis and accumulation during assembly. The total error formed after accumulation will affect the working performance and quality of the machine. This forms the interactive relationship between the size error and the comprehensive error of the parts. Design fixture is no exception. It is very important to determine the dimensional tolerance and shape tolerance of parts reasonably.

Through the design of this course, it not only strengthens the systematization of welding process equipment professional knowledge, but also organically combines professional knowledge, design ability and practical ability. The deeper harvest should be to consolidate and broaden the idea of designing fixtures and exercise the principle and flexibility of design thinking.