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型腔冷挤压加工是一项先进的加工工艺。在塑料、胶木、锻模等模具的型腔加工中已被广泛地采用。利用冷挤压法制造压模型腔,其生产效率较切削加工提高好几倍乃至十余倍,大大地降低了模具制造成本。对于成批生产的模具,例如扳手、医用剪刀等零件的锻模型腔,采用此工艺后更显示出很大的经济效果。挤压型腔并具有良好的加工质量,其尺寸精度可达二级,表面光洁度可达▽▽▽9～▽▽▽▽10。挤压后压模材料的纤维组织更趋紧密,从而提高了压模强度,对于如旋钮、握把、手柄、罩盖等零件的压模型腔利用冷挤压法加工,解决了用—般切削加工所不能解决的问题,而且可以获得远经切削加工光洁、清晰的型腔。这里仅就目前的挤压工艺作一些介绍,供有关人员的参考。
Cavity cold extrusion is an advanced processing technology. In plastic, bakelite, forging die and other mold cavity processing has been widely used. The use of cold extrusion die cavity manufacturing, the production efficiency compared with cutting improve several times or even more than ten times, greatly reducing the cost of mold manufacturing. For mass production of molds, such as wrenches, medical scissors and other parts of the die cavity, the use of this process even more shows a great economic effect. Extrusion cavity and has good processing quality, its dimensional accuracy of up to two, the surface finish up ▽ ▽ ▽ 9 ~ ▽ ▽ ▽ ▽ 10. After extrusion, the stamper material has a more compact fiber structure, thereby improving the stamper strength. The cold pressing method is applied to the stamper cavity of the parts such as knob, grip, handle, cover and the like, Processing can not solve the problem, but also get far away from the machined smooth, clear cavity. Here only some of the current extrusion process for some introduction, for the reference of the staff.