How to prevent the material from tearing during the precision stamping process

How does precision stamping prevent the material from tearing during the stamping process? Dongguan Hardware will answer in detail for you. 1. Enclose the material with a v-shaped tooth crimp. Avoid bending and uplifting of the sheet material; 2. Use a small punching gap. The double-sided stamping space of fine blanking is about 1%-1.5% of the material thickness, so that the material is always perpendicular to the stamping direction, so as to reduce the bending deformation in the deformation zone, and no tensile stress is generated, which constitutes the condition of compressive stress and plastic deformation; 3. Using the blank holder force and the back pressure of the ejector pin, the material deformation zone is tightly compressed to make it in a two-way compression state, and the hydrostatic pressure of the material in the deformation zone is increased to improve the fin property of the material and inhibit cracks and tearing. produce. The cutting edge of the concave or convex mold is made into a small fillet, the radius of which is generally 0.05mm~0.1mm, in order to reduce the stress concentration at the cutting edge and avoid or delay the generation of cracks.