Abstract: Based on the comprehensive analysis on the plastic parts structure service requirement, mounding quality and mould menu factoring cost. A corresponding injection mould of internal side core pulling was designed. By adopting the multi-direction and multi-combination core-pulling. A corresponding injection mould of internal side core pulling was designed, the working process of the mould was introduced第三十一章 金属切削机床及加工第一节 金属切削机床的分类及型号的编制方法一、金属切削机床的分类金属切削机床种类繁多。我国大致可分为通用机床、专用机床和组
