应用RE与RP技术进行汽车排气管铸造模具快速制造

RAPID MANUFACTURING OF AUTO VENT PIPE CASTING DIE WITH RE&RP TECHNOLOGY

汽车排气管是汽车重要的零部件之一,其结构复杂,难以用传统的方法进行产品和模具的再设计及二次开发。本文论述应用反求工程(RE)及快速成形(RP)技术对汽车排气管铸造模具进行快速制造的技术。通过三坐标测量机获取排气管表面的空间点数据,进一步获得产品的CAD数字模型,通过CAD分模功能获得排气管铸造模具模型;基于分层制造、逐层叠加成形的原理,采用快速成型技术直接、精确、快速地进行汽车排气管铸造模具的制造。从模具的概念设计到制造完毕仅为传统加工方法所需时间的1/3和成本的1/4左右,应用RE与RP技术进行模具的快速制造方法已为业界高度重视。

Auto vent pipe is an important part of a car. The redesign and secondary development of the product and the die is very difficult through traditional way because of the complex structure of auto vent pipes. This paper deals with the rapid manufacturing technology of auto vent pipes casting die by using RE&RP technology. The data of space points of vent pipe is obtained by three coordinate measurement machine COMERO, the digital CAD model is gotten subsequently and the digital casting die of auto vent pipe i...