What are the considerations for punch fixing methods and other types of design?

2025-10-24 14:03:48

Punch fixing method and type 1. Clamping type of splint 2, no splint, directly lock the soft material backing plate 3. Add the screw on the reverse side of the reinforcing position Design considerations: ① According to the customer's requirements, the punch is fixed on the front or the back. ② When the length and width of the punch exceeds 100*100, make screws and pins directly on the punch and fix them on the back soft material backing plate without splint and backing plate. ③When the punch is weak, we need to strengthen the punch. According to customer requirements, we can choose the following methods In the design of punch reinforcement, we should fully consider the feasibility of processing ④ If the customer has no SPECIAL requirements, under normal circumstances, we will try our best to consider quick removal of the punch to facilitate mold removal and mold adjustment. ⑤ Add waste thimble to the punch as much as possible (unless it cannot be done). The thimble shall be as big as possible, at least ￠ 4.0 or more, and the point of the quadrant of the countersunk hole of the thimble shall be at least 3mm from the edge of the knife. ⑥ Sometimes the material thickness is relatively thick. In order to reduce the blanking force, the punch can make high and low impact or wave blade. Generally, the height difference of the blade must be greater than 1.5 times the material thickness. ⑦ The point of the screw countersink hole to the edge of the knife edge shall be at least 5MM or more to prevent machining errors and hole breakage caused by screw countersink chamfer or knife edge line change. ⑧ This structural design method is adopted when the customer requires or the punch is extremely slender. The pressing block presses both sides of the punch, the effective contact area A is designed to be at least 6mm, and the middle area at the bottom of the punch is designed to avoid empty reinforcement, where the B value is designed to be at least 20mm and the C value is designed to be at least 30mm, so as to ensure the strength of the splint clamping punch.