众所周知,模具是成型金属、塑料、橡胶、玻璃、陶瓷等制件的基础工艺设备。汽车、摩托车、飞机、航天、电子、纺机、印机、家用电器、仪表、通讯设备等产品中约60%～90%的制件必需用模具才能成型。由于模具常利用材料的流动来获得所需形状和尺寸的零部件,因此可实现少切屑、无切屑加工,从而节省了原材料。1999年,我国已有模具生产厂 As we all know, mold forming metal, plastic, rubber, glass, ceramics and other parts of the basic process equipment. About 60% ~ 90% of the parts in automobiles, motorcycles, aircraft, aerospace, electronics, textile machinery, printing machines, household appliances, instruments, communications equipment and other products must be molded with molds. Because molds often use the flow of material to get the parts of the desired shape and size, less chips and no chip removal are achieved, saving raw materials. In 1999, China has mold manufacturing plant