Design methods, steps and precautions for welding fixtures for Petrol Car

The assembly and welding quality of Honda Car bodies depends to a large extent on the assembly and welding fixtures of Petrol Car. Only by achieving standardization and serialization can fixture parts be universal and the manufacturing accuracy of assembly and welding fixtures unified, thus improving the manufacturing of Honda Car bodies. level.

Therefore, general equipment, including reducers, stepping mechanisms, standard welding tools, pneumatic and electrical equipment, quick clamping mechanisms, etc. and standard parts, positioning pins, positioning plates, etc. should be used as much as possible in the design. The standardization of major parts will bring many benefits to the design and manufacture of assembly and welding jigs for Petrol Car, or to the design and manufacture of car bodies.
1. Before designing the welding fixture for Petrol Car, you must first understand the production procedures, process requirements, product structure characteristics and production line layout, extensively collect domestic and foreign advanced technical data, conduct process research, and have an in-depth understanding of the performance, structural characteristics and existence of similar vehicle equipment. The problem;
2. Determine the complexity and automation of the fixture based on the production procedure and output;
3. Determine the structural form of the fixture according to the size, shape and structural complexity of the weldment;
4. Determine the clamping position and positioning method according to the welding method, that is, the model and specification of the required welding equipment;
5. Select appropriate positioning points and key positioning points according to the process characteristics of the stamping parts and the needs of the subsequent assembly process;
6. According to the flow direction of the workpiece, determine the connection between the fixture auxiliary device and the supporting lifting, conveying and other mechanisms;
7. After the main structure is determined, the auxiliary devices can be determined, such as the design of water (oil), gas, and electrical circuits, the reasonable arrangement of quick connector locations, the protective copper plates required for pneumatic components and external solder joints of the cover, etc.
8. Determine safety measures. Safety devices (safety pins, alarms, etc.) should be installed in appropriate parts of the fixture;
9. Since the overall structure of the Petrol Car welding fixture is huge and the structural dimensions are complex, its design should adopt the coordinate method and modular design method to improve design efficiency;
10. When designing the specific structure of the fixture, standardized components should be used as much as possible, or the degree of generalization and serialization should be improved.