Composite Mold Process And Precautions

The compound mold structure is welcomed by customers because of its high production efficiency and good dimensional accuracy of the workpiece; but at the same time, the usual processing methods are not satisfactory due to the limitation of the punching and concave molds by the blanking conditions. So a new type of processing method - corrosion process appeared, and the processed chess parts fully meet the technical requirements.
Processing route: blanking--turning (step)--scribing--pre-drilling aluminum wire holes--heat treatment--finishing--electric machining (shape and inner hole)--corrosion (leakage hole)-- cleaning.
After the composite mold parts are corroded, the wall of the leakage hole is smooth, the size is consistent, and the strength of the cutting edge is guaranteed to the maximum extent.
(1) In order to save materials, the method of turning around and punching can be adopted. At this time, the two inner guide columns can only be installed on the same side.
(2) When punching the convex position, the mold needs to be lowered, and the insert can be designed on the upper splint or a limit can be made between the lower backing plate and the outer stripping plate. The inner stripping force and the outer stripping force should be larger, and the outer stripping plate should be higher than the convex plate for pressing the material. The trimming punch and the large convex punch must be fixed on the splint, and the punching head near the convex should be designed to be shorter to ensure that the material is pulled and extended before the punching action is completed.
(3) When designing a compound blanking die for a symmetrical product, a positioning hole for anti-reaction in the subsequent process can be pre-designed at the excess edge material.
(4) In order to prevent the mold assembly from being reversed, causing the mold to burst during stamping, the guide post needs to be designed in a fool-proof way.