Fine blanking cost reduced by hal but efficiency increased by 2 times

Today I will share some information about fine blanking. In general, we will classify fine blanking as a waste-free process, which is a process method that adds a blanking after ordinary blanking to achieve a high-precision, high-quality cross-section.

The dimensional accuracy of the product obtained by this process is very high, there is no sag, and the punching section is very smooth, and there are almost no burrs. It is a necessary process for high-precision products.

Main features: Compared with the general punching, the structure of precision punching die is mainly an extra ring gear pressure plate (V-shaped tooth) and ejector on the lower die blade or on the upper die stripping plate, and the punching and knife edge punching The cutting gap is very small, the lower die blade has a small arc, which is convenient for feeding.

When the product is punched, the punch presses the material against the material by the force of the spring before contacting the product to prevent the material from being pulled and lateral movement.

Its movement principle is mainly that the lower die has an inner top to prevent the bending deformation of the waste material during the punching process and affect the quality of the blanking section. At the same time, through a very small blanking gap, the punch and the knife edge are similar to squeeze the cross-section material. Because the lower die knife edge has made a small R, it is convenient for the material to flow. The result is a very smooth flat product. To sum up: this fine blanking, there are three kinds of common pressure of forward pressure, minimal punching and concave edge of the die, which can be completed without any link. Everyone can try this structure, and the effect is very ok.


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