During daily production, stamping parts may encounter situations where the hole size is either too large or too small, potentially exceeding the specification requirements, or significantly differing from the die size. In addition to considering the design dimensions, processing accuracy, and blanking clearance of the forming convex and concave dies, the following aspects should also be taken into account to address the issue:
(1). As the cutting edge of the blanking tool wears, the tensile stress on the material increases, leading to a greater tendency for the stamped parts to buckle and distort. When buckling occurs, the hole size tends to decrease.
(2). Excessive pressure on the material can cause plastic deformation, leading to an increase in the hole size. Conversely, reducing the pressure will result in a decrease in the hole size.
(3). The shape of the punch tip. If the tip is contoured with a slope or curve, the trimming force is reduced, making it less likely for the parts to buckle or twist, thus, the punch hole size tends to be larger. Conversely, when the punch tip is flat (without a slope or curve), the punch hole size tends to be smaller.
The company, catering to customer needs, first creates a service project prototype. It truthfully informs customers about which projects may not meet expectations and then seeks their opinions, ensuring that customers do not waste a single cent. The company consistently grows by adhering to the philosophy of "giving roses, leaving a lingering fragrance in one's hands."
