本课题是对CH型汽车灯罩的模具设计以及其成型零件的机械加工工艺规程编制

This object is CH cars mold design and shade machining process procedure of the preparation of the molding parts. This paper first introduces the status quo through the development of domestic and foreign plastic injection mold, finding practical significance of this graduation project. After car lampshade process were analyzed to understand the plastic properties of the material, shrinkage, density, dimensional accuracy and tolerances.

本课题是对CH型汽车灯罩的模具设计以及其成型零件的机械加工工艺规程编制。本论文首先通过介绍国内和国外注塑模具的发展现状，寻找本次毕业设计的现实意义。之后对汽车灯罩进行了工艺性分析，了解塑件材料的性能、收缩率、密度、尺寸精度和公差。

This topic is about the mold design of CH type automobile lampshade and the process planning of its forming parts. This paper first introduces the development of injection mold at home and abroad, looking for the practical significance of this graduation project. After that, the technological analysis of automobile lampshade is carried out to understand the performance, shrinkage, density, dimensional accuracy and tolerance of plastic parts.<br>