The processing procedures of the main working parts of precision metal stamping dies, namely the convex and concave dies, do not have high technical requirements for operation and can form more complex cavities at one time. In recent years, Switzerland, Japan and other countries have conducted in-depth research and major improvements on electrical processing equipment, and have manufactured fully functional high-precision NC and CNC wire cutting machines with processing accuracy of ±0.005~ 0.001mm, or even smaller. The processing surface roughness Ra value can reach 0.4μm. The precision metal stamping dies produced by Jingzhong Mould have a blanking size accurate to +/-0.002, and the bending size is within +/-0.08mm.
The first step of metal stamping processing dies is to cut the material. At the very least, the blank must be cut or sawed off from the raw material of the die steel, and then it is rough processing. The surface and size of the newly cut blank are relatively poor, so it needs to be put on a grinder for rough grinding. At this time, it belongs to rough processing, so the size requirements are not high, and generally a tolerance of 50 wires is enough. After rough processing, heat treatment is required. Generally, heat treatment is processed by a special heat treatment plant. There is not much to introduce about this.
After heat treatment, fine processing is required. Generally, it is first fine-grinded on a grinder. At this time, the size requirements are more stringent. Generally, the accuracy should be around 0.01. Of course, this accuracy is not absolute. The specific accuracy requirements should also refer to the complexity and precision of the metal stamping parts that the metal stamping mold needs to process.
After the grinding machine is completed, the previous design drawings are installed for processing. Generally, the wire holes are threaded first, and then the required size and shape are cut out according to the drawings, and then the milling machine, CNC, etc. are used as appropriate. This specific also depends on the complexity of the metal stamping parts.
