Stamping process for deformation process classification

Deformation process can complete a variety of stamping process, its basic process can be divided into two categories, separation process and the deformation process. Part of the separation process is to make the embryo and the approach of another part from each other, there are mainly blanking, punching and trimming, cutting, trimming, etc. Which is the most widely used for punching and blanking. Deformation process is part of the embryo of relative to another part of the produce displacement without rupture process method, mainly include the deep drawing, bending, flanging, bulging and local forming, reducing, school, spinning, etc. In essence, the deformation area in stamping is MAO embryo produces the corresponding plastic deformation under the action of external force, so the stress state and deformation characteristics of the deformation zone of classification, stamping forming of the same nature forming method can be summarized into the same type and carry on systematic research. The vast majority of the stamping MAO embryo deformation area are in a state of plane stress. Used to think that is not affected by the external force on plate surface effect, even with external force, its value is smaller, so you can think in vertical direction on the surface stress is zero, the plate is MAO embryo produces plastic deformation on the board face each other two principal stress direction. Because the thickness is small, usually think these two approximate principal stress in the thickness direction is evenly distributed. Based on the analysis, we can put all kinds of stamping forming with the stress and deformation characteristics of the deformation area, MAO in the coordinate system of plane stress and the corresponding to the strain in the coordinate system to the location of the stress and the strain grid decision.