Switch hardware stamping parts, why does the size change when stamping + 15 years, the manufacturer tells you

The hardware technicians of the manufacturer responsible for the manufacture of switch hardware stamping parts said that there are several reasons for the size variation during stamping processing. Xiaoshuo sorted out some relevant knowledge based on actual production. Let's take a look at it: 1. Knife edge wear: the hair is too large or the size becomes larger (cut shape); becomes smaller (punching); flatness is not good. Re-grind or replace the die. 2. There is no guide: the guide pin or other positioning device has no effect, the feeder is not relaxed or the guide pin diameter is not correct, and the guide cannot be corrected. The positioning block is worn and the feed distance is too long. 3. The die is too short: the camber becomes larger, the chamfer is not enough, and the forming is incomplete. 4. Insufficient escape holes: squeezed or injured or deformed. Clear the escape hole or increase the escape hole and depth. 5. Insufficient ejection: poor feeding, bent strips, poor stripping, upper die pulling, and extended ejection. 6. Improper ejection: Improper preparation of ejector pins, improper spring force or excessive ejection. Adjust the elastic force or change the position or the number of pins; pin grinding is short to match. Hardware, 15 years of focus on switch metal stamping parts, 2 days for sampling, 3 days for shipment, 4 days for mold production, 20 design team, free sampling, large quantity free mold opening, can save customers new products listed companies, stamping processing accuracy It can reach 0.01mm, and the quality of stamping parts is guaranteed. It is a metal stamping parts processing manufacturer worthy of your trust.