1, stripper and punch with tight, stripper tilt, such as height not unified device is undeserved, or other materials should be finishing materials, stripping screw combination with casing and inner hexagon screws.
2, small stamping die clearance, punch when out of the material need lots of ejection force, punch was caused by material on, need to increase the lower die clearance.
3, die a back taper, trimming die.
4, die blanking hole and the mold base hole not for leakage, finishing hole leakage.
5, punch and die edge passivation to grinding in a timely manner.
Sharp edge of the stamping die can work out beautiful cut surface, the blade is blunt, requires additional pressure, and artifacts of rough, produce very big resistance, grabbed the punch was stuff.
6, appropriate USES the oblique edge punch.
7, try to reduce wear and tear, improve lubrication condition and lubrication plate and punch.
8, spring or rubber elastic enough or fatigue wear and tear, timely replacement of spring.
9, guide pillar and guide bush clearance is too large, repair or replace the guide pin guide bush.
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