Shanghai Automotive Stamping Factory, what causes the warping and deformation of the blanking parts + the stamping surface is as smooth as jade

The technician in charge of the Shanghai Automotive Stamping Factory said that Xiaoshuo compiled some relevant information for you about the causes and solutions for the warpage and deformation of the blanking parts, so that everyone will not be at a loss when encountering this situation. Let's take a look with everyone: 1) Reason: There is a gap between the acting force and the reaction force that do not produce a moment in a line. (When the gap between the convex and concave molds is too large and the cutting edge of the concave mold has a reverse taper, or the contact area between the ejector and the workpiece is too small, warping will occur) 2) Countermeasures: The blanking gap should be selected reasonably; in the mold structure, the pressure plate (or support plate) should be increased in contact with the pressure plate plane and there is a certain pressure; check the die edge if there is a reverse taper The cutting edge of the die must be properly trimmed; if the shape of the blanking part is complex and the inner hole is large, the shear force is uneven to increase the pressing force, and the strip is pressed before blanking or a high-precision press is used for blanking; Leveling should be carried out before punching. If the warping deformation cannot be eliminated, the workpiece can be leveled again through the leveling die after the punching; the dirt in the mold cavity is regularly removed, the surface of the thin sheet material is lubricated, and the mold structure Equipped with oil and gas holes. Hardware, 15 years of focus on Shanghai automobile stamping processing plant, 5000 square meters production workshop, hundreds of precision processing and production equipment, more than 20 Ru0026D and design engineers, monthly processing capacity of 100+ sets of molds and daily production capacity of 3 million punching times, stamping accuracy can be Up to 0.01mm, 16 quality inspection layers are strictly checked. It can quickly solve the urgent problem of time when choosing hardware stamping processing, solve the problem of stamping accuracy, and solve the problem of production quality. For 15 years, I have been conscientious and dedicated to the results of your needs for the results of work!