What failures will occur in the design and production of progressive die

Troubleshooting in the design and production of progressive die: 　　 In the production of progressive die, some faults sometimes occur, which affect the production. The solutions to some common faults are introduced below. 1. Increased product burrs. After the mold is produced for a period of time, the burrs of the production parts will increase. At this time, the convex and concave die edges should be checked. If the edges are worn or chipped, they should be sharpened and sharpened. Then, pad the punch or die with a gasket of corresponding thickness. After the die has been sharpened for many times, it should be checked whether the straight wall of the cutting edge has been ground. If there is no straight wall of the cutting edge, the die insert should be replaced. If the convex and concave die cutting edges are not worn, and the burrs on the parts The unevenness is due to the offset of the blanking gap, and the gap should be adjusted at this time.　　2. Floating of waste materials 　　 In stamping production, the floating of waste materials is a big problem, which not only affects the production, but even damages the mold. Generally speaking, regular-shaped waste materials such as round or square are prone to float up, while irregularly-shaped waste materials with more complex shapes will rarely float up.　　 Here are some reasons and solutions for the floating of waste materials.　　 (1) The blanking gap is large. If the scraps often float up during the trial phase, the blanking gap is too large. The die should be re-made and the blanking gap should be reduced. If the waste material floats occasionally, you can use electric spark discharge in the cavity to increase the roughness.　　(2) The surface of the punch is too smooth, and the waste material adheres to the punch under the action of atmospheric pressure, which can increase pores on the punch.　　 (3) Single-side blanking produces waste materials floating up, and sharp corners are added to squeeze the waste materials on the side that is not blanked.　　(4) The stamping speed is high, so you should consider reducing the speed. If the speed cannot be reduced due to production needs, you can add ejector pins on the punch to push down the waste.　　 In addition, there are also some man-made progressive die failure factors, such as insufficient demagnetization after cutting edge, excessive use of punching oil during production, etc. These should be avoided as much as possible.