News Release

In daily production, stamping parts may encounter situations where the punching size is too large or too small (possibly exceeding the specification requirements), as well as significant differences from the punch size. In addition to considering factors such as the design size, machining accuracy, and punching clearance of the forming convex and concave molds, the following aspects should also be considered to solve the problem:

(1) When the cutting edge is worn, the tensile stress on the material increases, and the tendency of the stamped part to flip and twist increases. When flipping occurs, the punching size will decrease.

(2) The strong pressure on the material causes plastic deformation, which can lead to a larger punching size. When reducing strong pressure, the punching size will decrease.

(3) The shape of the end of the convex die blade. If the end is trimmed with an inclined or curved surface, the punching force slows down, making it difficult for the punched part to flip or twist, resulting in a larger punching size. When the end of the punch is flat (without inclined or curved surfaces), the punching size tends to decrease relatively.