A brief introduction to the punch and die used in the processing of metal stamping parts

Stamping parts processing plant, processing metal stamping parts, metal stamping parts, stainless steel stamping parts, in the processing of metal stamping parts, what are the structural situation and processing characteristics of the punch and die? Let’s take a look at 1. The punch used in the processing of metal stamping parts 1. The structure of the punch and its fixing method. Because the shape and size of the metal stamping parts are different, the actual conditions such as the processing and assembly process of the punching die are also different. There are many forms of punch structures used in actual production. Its cross-sectional shapes are round and non-circular; the cutting edge shapes include flat blades and oblique blades; the structures include integral, inlaid, stepped, straight-through, and sheathed types. The fixing methods of the punch include shoulder fixing, riveting, fixing with screws and pins, and fixing with adhesive casting method. 2. Check the strength of the punch 　 Under normal circumstances, the strength and rigidity of the punch are sufficient, and there is no need to check the strength. However, when the cross-sectional size of a particularly slender punch or punch is small and the thickness of the blanking sheet is thick, the pressure-bearing capacity and the ability to resist longitudinal bending must be checked. Its purpose is to check whether the dangerous section size and free length of the punch meet the requirements, so as to prevent the punch from longitudinal instability and breaking. Second, the die used in the processing of metal stamping parts 1. There are many types of die, the structure of the die includes integral and inlaid styles; the cutting edge also has flat blades and oblique blades. 2. When the die is fixed by screws and pins, it is necessary to ensure that the distance between the screw (or counterbore), between the screw hole and the pin hole, and the distance between the screw hole, pin hole and the die wall cannot be too close, otherwise it will affect the mold life. 3. Cutting edge form of the die 　The die is divided into integral die and inlaid die according to the structure. Here we introduce the integral die. The cutting edge of the punching die has two types: straight cylindrical shape and tapered shape. When selecting the cutting edge form, it should be determined mainly according to the shape, thickness, dimensional accuracy of the blanking part and the specific structure of the mold. 4. The outline size of the integral die is determined when the die is subjected to the punching force and lateral extrusion. The role of pressure. Due to the different structure and fixing method of the die, the stress is more complicated. In the production of metal stamping parts, it is usually based on the thickness of the blanking sheet and the outline size of the blanking part, or the distance between the edge of the die hole and the edge wall. According to the empirical formula to determine. 5. For porous concave molds, the distance between the cutting edge and the cutting edge should meet the strength requirements, and it can be designed according to the minimum wall thickness of the convex and concave mold of the composite mold. Article recommendation: The stamping parts processing factory will take you to see the influence of the edge value on the stamping parts. Previous: How to detect the hardness of the metal stamping parts