Optimize the small holes of the product and reduce the types. The diameter of the punch ⑩ D ≥ 2.5T is appropriate (T = material thickness);
Change from the conventional small hole punching needle ⑩ fixed on the splint to fixed on the stripper insert ⑧; increase the stripper small guide post ⑾ to improve the guiding accuracy;
The length of the small hole punching needle ⑩ is reduced from 60mm to 24.5mm;
The lower die punching insert is made into a double-layered block, the insert, the thickness is 10mm, the material is SKH-9, the reverse side is 2mm, and the body is fully discharged after being straight to prevent the needle from breaking due to the blockage. The second layer of the insert, the thickness is 15mm. D2 material;
Screw ②The quick-release device is reversely locked, which is easy to replace on the machine;
Try to make all the small holes in the same process step, centralize the punching, concentrate on the waste, and increase the waste suction equipment.