What are the advantages and disadvantages of using composite dies for stainless steel stamping

Compound die refers to a die structure in which the punching machine completes multiple processes such as blanking and punching in one stroke. What are the advantages and disadvantages of using composite dies for stainless steel stamping?

The advantages of using a composite die for stainless steel stamping are: the material is under pressure when the stainless steel is stamped, and the surface of the part is very flat. When stainless steel is punched, the material does not need to be moved, and the accuracy of the workpiece will not be affected by the feeding error. The inner and outer coaxiality is relatively high, which can generally reach (0.02mm—0.04mm). Due to the compact structure of the composite mold, the outer profile The size is relatively small. When stamping with a composite die, the restrictions on the shape and size of the strip are not strict. Short materials and leftover materials can be used for stamping, and the material utilization rate is higher than that of the continuous die. The composite die is suitable for stamping thin, soft and brittle materials.

The shortcomings of the composite die for stainless steel stamping are: there are many die parts, complicated structure, difficult assembly and manufacturing, and high cost. However, the difficulty of mold manufacturing for parts with complex shapes is lower than that of continuous molds. Due to the limitation of the minimum wall thickness of the convex and concave molds, composite molds are not suitable for some parts with small distances between the inner hole and the outer edge and between the holes. The productivity is lower than the continuous mold, the work is not as safe as the continuous mold, and the parts are not as convenient as the continuous mold.