Compress the material. Improve the traditional mold design structure, open a material gap on the unloading plate (that is, when the mold is closed, the unloading plate and the concave die fit, and the gap between the unloading plate and the concave die where the material is accommodated is the material thickness t-0.03 ~0.05mm). It can make the movement of the stripper plate in stamping smooth, and the material can be compressed. For key forming parts, the stripper plate must be made into a block-type structure, so as to easily solve the wear (pressure) loss caused by the pressing part of the stripper plate caused by long-term stamping, and the defect that the material cannot be pressed. Use the stripper to hold down the material to prevent the material on the die side from warping upwards.
Reasonable arrangement of unloading sequence. In the progressive die, the arrangement of the blanking sequence may affect the forming accuracy of the stamping parts. For the blanking of small parts of automobile stamping parts, generally a larger area of blanking is arranged first, and then a smaller area of blanking is arranged to reduce the impact of blanking force on the forming of stamping parts.
A bevel or arc is trimmed at the end of the punch edge. This method can effectively reduce the buffering force. After the punching force is reduced, the tensile force on the material on the die side can be reduced, and the phenomenon of turning over and twisting the stamping parts can be avoided.
Pay attention to maintaining the sharpness of punching convex and concave die edges. If the punching edge is worn, the tensile stress on the material will increase, so that the stamping parts tend to be turned over and twisted, so maintenance work should be done to avoid the wear of the punching edge.
Enhanced pressure function. That is to increase the thickness of the pressing part of the unloading insert (the normal thickness of the unloading insert is H+0.03mm) to increase the pressure on the material on the die side, thereby preventing the stamping parts from turning over and distorting during punching.
Pintejin Sheet Metal shop offers a cost-effective solution for a wide range of industries with our custom metal stamping and custom sheet metal fabrication capabilities. Our stampnig operations include a variety of sheet-metal forming manufacturing processes, such as punching, blanking, embossing, bending, flanging, and coining. Our professional, experienced and well-trained engineers can execute the complex metal stamping operations with precision and accuracy.
No matter what your metal fabrication needs are, Pintejin can offer the right solution: from single sheet metal part or sub-assembly of stamped metal parts to turnkey solutions for mechanical and electrical assemblies. We have the technology, equipment and the experience to fabricate customised metal products from aluminium sheet metal fabrication, steel, zinc plated steel, stainless steel sheet metal fabrication, brass and copper. Designs that require CNC machining of surfaces or components can be accommodated. We can supply polished, galvanized, zinc coated or powder coated finishes for any sheet metal work or stamped metal components. Coupled with our accurate and reliable metal fabricating equipment, we guarantee precision and repeatability in custom sheet metal work. You’ll be taking advantage of the best sheet metal fabrication china can produce.