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What are the processes of sheet blanking in the processing of stamping parts?
Stamping parts processing plant, processing stainless steel stamping parts, metal stamping parts, mechanical parts, etc., in the stamping parts processing, the sheet metal must be punched first, and the sheet material separation process can be divided into several stages according to its characteristics; At this stage, under the action of the punch, the surface of the stamping part is elastically compressed and bent, and it may be squeezed into the cavity of the concave mold. The sheet metal contacts the punch and the concave mold to form a small fillet. At this time, the internal stress of the material The yield limit of the material is not exceeded, so this stage is called the elastic deformation stage; in the second stage, the punch of the stamping die continues to drop, and the internal stress of the material reaches the yield limit, and part of the metal material is squeezed into the concave film hole, causing plastic deformation. Due to the gap between the punch and the female mold, the blank is bent and slightly stretched. The material produces stress concentration at the edge of the punch and the female mold until micro cracks begin to appear. This stage is called the plastic deformation stage; the third stage ;At this time, as the punch continues to descend, the formed upper and lower micro-cracks will expand and extend into the material. When the upper and lower cracks meet and overlap, the material will be sheared and separated. This stage is called the shearing stage; The four parts of the blanking section in the processing of the workpiece; the size ratio of the collapsed angle, the bright band, the shear band and the burr on the entire section is not static. It will vary with the type, state, thickness and thickness of the material. The blanking conditions vary; article recommendation: a brief introduction to the flanging in the processing of stamping parts Previous: How to reduce the punching force of metal stamping parts die