What are the requirements of automobile welding fixture design?
What are the requirements of automobile welding fixture design? For the pre-design scheme of automobile welding fixture, if there is any significant impact in obtaining the original concept change of automobile welding fixture, it should be audited by the engineer.
Requirements of automobile welding fixture design: All drawings should be 1:1 with the size of the entity, and the size can be accurately marked. Besides:
1. All sizes should be expressed in metric form, but the raw material sizes in the checking tool raw material list may be in British form.
2. If possible, the standard parts available for procurement should be selected as far as possible for the raw materials of the inspection tools (such as corner brackets, stacking blocks, hinges, guide plates, screws and keys, etc.).
3. The design of automobile inspection tools can be done by computer-aided design or hand-drawn on translucent paper No. 1.5.
4. All parts of the checking fixture must be drawn from three views, and the finished surface/body and/or working reference line must be marked.
5. Fixture design drawings must include contour drawings (dashed lines) of parts to be measured on the Fixture. The lines should be thick enough to facilitate the duplication of drawings.
6. The checking list of raw materials should include the size of raw materials, the name of the manufacturer and the catalogue type of all standard parts.
7. Unless to clarify manufacturing requirements, the parts drawing of the fixture shall be separated from the assembly drawing of the fixture.
When selecting material, chuck, guide plate and pin for automobile welding fixture, the environment used for automobile welding fixture should be considered to ensure that the testing fixture maintains its original function during the period of production validity. The positioning datum scheme must be applied in the design drawings of automobile welding fixture and on the checking fixture. The general concept is that the tested parts are positioned by the first positioning surface and the second positioning surface. In the three-dimensional space composed of the third positioning plane.
