Factors that cause the punching size of the stainless steel stamping parts of the back cover of the mobile phone to be inconsistent [hardware]

In the production process of the stainless steel stamping parts of the back cover of the mobile phone, there will be situations where the punching size is too large or small and the size of the punch is quite different. In order to solve this problem, we have considered the planned size of the convex and concave molds. In addition to the components such as processing accuracy and blanking gap, the following aspects should be considered. 1. It is caused by the burrs of the punching parts produced during punching, and the punching edge needs to be researched, and pay attention to check whether the punching gap is reasonable. It is caused by the instability of stamping parts during bending, mainly for U-shaped and V-shaped bending, guiding the stamping parts before bending, guiding during the bending process, and pressing the material during the bending process to prevent stainless steel stamping The slippage of the piece during bending is the focus of solving the problem. 2. The tensile stress on the material increases, and the tendency of stamping parts to turn over and twist increases. When turning over, the size of the punching hole will become smaller. The strong pressure on the material deforms the material, which will cause the size of the punched hole to become larger. When the strong pressure is reduced, the punching size will become smaller. 3. If the end is trimmed with a bevel or arc, because the punching force is relieved, the punching parts are prone to turning over and smearing, so the punching size will become larger. When the end of the punch is flat (no bevel or arc), the punching size will be relatively small. The above hardware author's introduction hopes to be helpful to you. The factors that cause the punching size of the stainless steel stamping parts of the back cover of the mobile phone to be inconsistent need to know more.