Good processability and reasonable process plan of automobile stamping parts

2021-04-30 15:40:43

In the long-term use of stamping dies for automobile stamping parts, wear or loose parts will also lead to product scrap. There are many stamping plants, after the installation of the mold for production, do not carry out the daily inspection and maintenance of the mold, only when the burr is relatively large, just remove the mold and simply grind the knife edge. As everyone knows, the wear of the mold is not only the knife edge wear, but also some mold accessories will wear with the use. After the wear of these accessories, it will have an impact on the accuracy of the whole mold.

The manufacturability of blanking parts refers to the adaptability of blanking parts to hiding process. Generally speaking, the structural shape, accuracy requirements, form and position tolerance and technical requirements of the parts have great influence on the precision sheet metal processing. Whether the manufacturability of blanking parts is reasonable or not affects the quality of blanking parts, die life, material consumption, precision sheet metal productivity and so on. The manufacturability should be improved as much as possible in the design.

The shape of the blanking parts should be as simple as possible, symmetrical and avoid the curve of complex shape. If permitted, the blanking parts should be designed into the shape of less and no waste layout, so as to reduce the waste. The two ends of the rectangular hole should be connected by circular arc to facilitate the die processing. At the joint of each straight line or curve of blanking parts, acute angle shall be avoided as far as possible, and sharp angle is strictly prohibited. In addition to less or no waste layout or the use of mosaic die structure, there should be appropriate fillet connection to facilitate die manufacturing and improve die life.

The process design of precision sheet metal mainly includes the process analysis of blanking parts and the determination of blanking process scheme. Good processability and reasonable process plan can steadily obtain high quality crystal production meeting the requirements with small material consumption, less number of processes and working hours, and make the die structure simple and die life long, thus reducing labor and blanking cost.