Things will be damaged if they are used for a long time, and the frequency of such work as automobile die is very high in actual operation. Therefore, many problems will arise in automobile die processing, such as rebound cracking and wrinkles of sheet metal, which are inevitable. So how to eliminate them when encountering such situations?
Generally, the springback of sheet metal is large, because the sheet metal can not fully carry out plastic deformation, there is part of the elastic deformation caused springback, mainly by design to compensate and control, the remedial method is usually to re-shape, re-process the surface, fitters do is to grind the surface, to ensure the conformity rate of the surface. Cracking is usually due to the imperfection of the actual processing and assembly state of the die, and the imperfection of the supplementary stamping process, resulting in the plastic deformation process of drawing parts can not flow smoothly, rapid changes, cracks appear. What the fitter of automobile die processing needs to do is to improve the state of the die, ensure the stability of the working state, analyze the broken parts and adjust the profile of the supplementary parts. Wrinkles are caused by the instability of sheet metal during plastic deformation. At the same time, the unreasonable supplementary stamping process is also one aspect. Sometimes the shape of the product determines that wrinkles cannot be eliminated.