How to cut the cutting process of metal drawing parts

When we need to punch out some deep bumps on the middle part of the drawing part, it is often impossible to get material from the outside of the blank and cause the workpiece to break partially. At this time, we can consider punching out the process incision or process hole in the appropriate position of the local protrusion deformation area, so that the rupture area can be compensated by the material from the inside; and the process incision can have two processing methods: 1. Punching out during blanking This method is used for local forming of workpieces with shallow depth; 2. Hardware drawing parts are cut out during deep drawing This is a more commonly used method. The plasticity of the material can be used to obtain a greater forming depth. When cutting the process hole in the process, it is often the process method of tearing, and the material is not completely separated. The waste of the incision can be used in the trimming process And cutting, because this kind of waste is more difficult to remove from the stamping method at one time, it is necessary to increase the subsequent process to achieve.