Control of stamping process

Stamping parts are a kind of metal products with a wide range of applications, which can be found in the automotive industry, electronics industry, and machining industry. In the process of stamping processing, stamping processing plants need to control the stamping process to ensure the quality of the stamped parts produced. Precision-Committed to custom processing of stamping parts for more than 10 years, we can customize various complex precision stamping parts. Next, we will introduce the control of the stamping process. 1. Stretching process Stamping processing requires several sets of molds to produce and process molding, and the mold technology requirements are high. Therefore, the main stage of the stamping process is the stretching process. The advantages and disadvantages of the stretching process are the comprehensive combination of each independent variable, and the basic needs of the stretching are considered to lay a good foreshadowing for the trimming and the reverse side. Because the blanking surface belongs to the filling part of the drawing process, the drawing must be effectively controlled. The pressing surface needs to be produced and processed to contain a certain inclination angle, which is to better make the blank and the pressing surface fit to a large extent, and to prevent the mold base from being harmful to the deep drawing of the blank. 2. Wrinkle control The main reasons for the wrinkling of stretched parts during the stretching process are as follows: the sheet fluidity of the stamping part is too fast during the whole process of feeding, resulting in wrinkles; the stamping part cavity R angle is too high Large, it is likely to cause wrinkles due to excessive fluidity of the sheet; unscientific mold positioning design, resulting in the failure to press the material during the entire stretching process of the metal stamping parts or the small parting edge, resulting in wrinkles; the gap between the concave and convex molds is too large. Causes wrinkles. 3. Process management Sometimes the stamping products are damaged due to the defects of the blank surface. Therefore, the blanks that have passed the inspection can be stamped and formed. The inspection of the stamped products also requires surface flaw detection. In the whole process of stretching, the sheet should flow at an effective rate. If the tassel of the sheet is too slow, it will cause the parts to crack. When the stripping equipment is selected, the stripping equipment removes the material for its effect. For this reason, the fluidity of the material can be adjusted very well. For the complicated oblique drawing parts, the axial tensile stress should be raised to control the wrinkling; for the deep drawing parts with large stretching distance, it should be set at a position with less material, so as to avoid wrinkling. Wrinkles are the result of insufficient stripping force. The method is to adjust the blank holder force. When the stretching is just started, in addition to increasing the bead force, the way to increase the stretch ribs should also be used to crease. [Related recommendation] Learn more: About the plan to improve the utilization rate of stamping parts