The 3d modeling and CNC program of motor fuel tank were engaged by UG software. The processing technology of diescavity for motor fuel tank was introduced.
采用UG软件对摩托车油箱进行三维造型和数控加工程序编制，详细介绍了摩托车油箱拉伸模凹模的加工工艺。
2
Duplication and generation technologies with CNCEDM in machining complicated cavity of plastics dies, resulting in integral cavity instead of mosaic one, are stated.
介绍了塑胶模具复杂型腔采用CNCEDM的拷贝法和展成法加工技术，使镶拼式模腔改为整体式模腔；
3
Multiple die with hydraulic compensating device adopts the design of multi-dies gathering in a common grease cavity, using high temperature lubricating grease as the pressure compensating medium.