1. In the daily die production of hardware fittings, care should be taken to maintain the sharpness of the cutting edge of the punching die and die. When the edge of the punching blade is worn, the tensile stress on the material will increase, and the tendency of the punched part to turn over and twist will increase.
2. Add a strong pressure function: that is to increase the size of the material inserting part of the unloading insert (normal unloading insert thickness H + 0.03mm), in order to increase the pressure on the material of the die side, thereby suppressing the stamping parts from being produced when punching Turn over, twist and deform.
3. Hardware fitting punched edge of the punch edge repaired ramp or arc: This is an effective way to reduce cushioning force. By reducing the cushioning force, the stretching force on the material on the side of the die can be reduced, so that the effect of suppressing the occurrence of turning and twisting of the stamping part can be suppressed.
4. Reasonable mold design: In the progressive mold, the arrangement of cutting order may affect the precision of stamping parts. For the blanking of the small parts of the stamping parts, generally a larger area of punching and cutting is generally arranged, and a smaller area of punching and cutting is arranged to reduce the impact of punching force on the stamping parts.
5. Compression of material: Overview of hardware fittings stamping manufacturers, to overcome the traditional mold design structure, open the material gap in the stripper plate (that is, when the mold is closed, the stripper plate and the concave die fit, and the receiving material at the discharge The gap between the plate and the die is t-0.03-0.05 mm thick. In this way, the movement of the stripper during the stamping is smooth and the material can be compacted. In the key forming part, the stripper plate must be made into an insert-type structure to facilitate the solution to the grinding (pressure) damage caused by the pressurizing part of the stripper plate caused by long-time stamping, and the material cannot be compacted.