Stamping problem and its improvement method

Crush:

The surface of the strip is damaged due to improper installation of mold parts, foreign objects, or interference of parts. The appearance of the finished product is not good. The common ones are a, punch not giving way, b, jumping chips, dirty mold c, wrong length of the punch lower mold d, no corner elimination e, rough mold core surface f, fan shape, poor incoming material g, feeding section interference Causes caused by defective h, interference i in the mold clamping line, and chipping of mold parts.

The operator must, based on the actual bad condition of the material strip, check the above-mentioned hypothetical variables, and thoroughly repair them one by one.

Warpage:

The bending phenomenon of the main body caused by the punching forming of the material belt is caused by the unbalanced stress caused by the punching forming, the elastic fatigue caused by the coil packaging, the presence or absence of trimming, and the feeding Ride comfort, internal stress of the material itself, homogeneity, etc. are all factors that affect it.

In addition to the adjustment station for the mold setting, there is room for improvement in the use of the leveling machine, the strength of the material belt layout, the setting of the empty station, the coordination of the float and the peeling board, the stability of material handling and storage.

Scuffing:

The surface damage of the material or finished product caused by the friction of the mold core during the forming process. In addition, it is necessary to pay attention to the judgment of copper oxidation. Commonly, there are a, the right-angle bending gap is too small, b, the contact R arc is too small, c. Good f, SPM speed, isokinetic of stroke speed g, poor symmetry of die core processing h, adjusting rod slope angle i, slip j during sheet forming, poor accuracy of the bottom dead center of the punch, etc. will all cause it. Therefore, it is necessary to control and optimize the variables according to the requirements of the product and the nature of the post-processing.