Why does stacking occur in automotive sheet metal stamping parts?
Time：
2022-07-15
1. The main cylinder of the machine tool and the blank holder force are not enough, the forming pressure is too low, and the CAE reference pressure value has not been reached, and the forming pressure needs to be adjusted to solve the problem. 2. The size of the blank is too short, the material flows too fast during molding, and the drawbead does not work. The solution needs to increase the size of the material. 3. The pressing surface is not pressed in place. The inner ring is too loose and the outer ring is too tight. It is necessary to re-grind the pressing surface to compact the inner ring of the pressing surface, and re-grind the profile to improve the grinding rate. 4. The height of the drawbead is too low, and the drawbead cannot function during the sheet forming process, resulting in the material flowing too fast. It is necessary to repair the welding and increase the height of the drawbead for debugging. 5. The process design is unreasonable. There is a tendency of stacking in the process of CAE theoretical analysis. No measures are taken, resulting in serious stacking in production. The solution is to change the process shape of the mold surface.
1. The main cylinder of the machine tool and the blank holder force are not enough, the forming pressure is too low, and the CAE reference pressure value has not been reached, and the forming pressure needs to be adjusted to solve the problem.
2. The size of the blank is too short, the material flows too fast during molding, and the drawbead does not work. The solution needs to increase the size of the material.
3. The pressing surface is not pressed in place. The inner ring is too loose and the outer ring is too tight. It is necessary to re-grind the pressing surface to compact the inner ring of the pressing surface, and re-grind the profile to improve the grinding rate.
4. The height of the drawbead is too low, and the drawbead cannot function during the sheet forming process, resulting in the material flowing too fast. It is necessary to repair the welding and increase the height of the drawbead for debugging.
5. The process design is unreasonable. There is a tendency of stacking in the process of CAE theoretical analysis. No measures are taken, resulting in serious stacking in production. The solution is to change the process shape of the mold surface.
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