文档介绍：毕业设计翻译资料
(外文)
专业:机自(模具) 指导教师: 李姝
学生姓名: 张洪浩班级-学号:模具072-27
2011年 6月
A GENERIC FRAMEWORK FOR RAPID DEVELOPMENT OF INJECTION MOLDS AND PRESSURE DIE CASTING DIES
Abstract: Rapid product development (RPD), a strategic solution to survive in petition is characterized as the process chain that ensures development of flexible products in shorter lead-time petitive cost. Even though die and mold development is recognized as a major step, tooling development procedure is not yet very well documented and is experience based, resulting in higher cost and longer lead-time. A research attempt has been made to develop a generic framework for rapid development of dies and molds, prises the methodologies for entire tooling development process starting from tooling requirements modeling, process modeling to rapid hard tooling development. This paper presents the methodology developed for each stage particularly for injection molding and pressure die- casting. The methodology can be easily customized for any tool room, enabling reduction in lead-time and cost through minimization of tooling iterations and backflows, demonstrated by industrial examples. Implementation of this framework is proposed for future tool rooms.
Key words: Die-casting molds;Plastic molds; Machinery industry
1 Introduction
shape (NNS) manufacturing is gaining wide acceptance for discrete parts manufacturing to meet the changes in market demand. This includes injection molding and pressure diecasting. Currently, most injection-molded parts are directly assembled, without any secondary machining. However, pressure diecast parts have an accuracy up to ±20µm and surface finish Ra - 1µm. One main concern of these developments is tooling, which currently consumes significant amount of time, and cost, and requires expertise.
The worldwide tooling industry is currently dominated by USA, Japan, Germany, Korea, Taiwan,China, Malaysia,Singapore and increasing globalization, the tooling users (prod