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Metal stamping parts production will encounter in their daily punching well as bigger or smaller punch size difference between the larger case, in addition to considering forming convex and concave mold design dimensions, precision blanking clearance and other factors, in addition to these should be considered to address the following aspects.
1, punching edge wear, tensile stress suffered material increases, stampings produced stacker, twisted tend to increase. When generating stacker, punching size will tend to be small.
2, extreme pressure material, and the material is plastically deformed, the size will result in increasingly large punching. And when you reduce the extreme pressure, punching size will tend to be small.
3, the end shape of the punch blade. If the ends of the slope repair or curved, due to the punching power to slow, difficult to produce stamping material turned, twisted, so the size will be increasingly big punch. And when the punch ends flat (no slope or arc) is, will tend to be small relative to the size of punching.