英语翻译1.IntroductionA progressive die is used worldwide for mass production ofsheet metal parts.Design of progressive die is a complex andhighly specialized procedure and typically progressive die designtakes 20% of the lead time from the conce

英语翻译1.IntroductionA progressive die is used worldwide for mass production ofsheet metal parts.Design of progressive die is a complex andhighly specialized procedure and typically progressive die designtakes 20% of the lead time from the conce
英语翻译
1.Introduction
A progressive die is used worldwide for mass production of
sheet metal parts.Design of progressive die is a complex and
highly specialized procedure and typically progressive die design
takes 20% of the lead time from the concept design to the final
stamping manufacture.The diverse nature of products produced
by progressive die demands a high level of knowledge on the part
of the die designer that can only be achieved through years of prac-tical experience.Checking the design features of sheet metal parts,
design of strip-layout,selection of die components,selection of
materials for die components; and modeling of die components
and die assembly are major activities for designing a progressive
die.The traditional methods of carrying out these tasks require
expertise and are largely manual and therefore tedious,time con-suming and error-prone.The quality of die design depends to a
large extent on the designer’s skill,experience and knowledge.A
number of researchers have tried to develop computer aided sys-tems for progressive die.For example,Murikama and Shirai
(1989)developed a CAD/CAM system which is capable of generat-ing assembly and dimensioned part drawings as the final output
but the strip and die layouts have to be done manually by the de-signer.Researchers at National University of Singapore and Insti-tute of High Performance Computing,Singapore also reported to
have developed an integrated modelling and process planning
system (2002) for planning bending operations of progressive dies.
Sima,Lee,and Jang (2004) carried out the study on the develop-ment of center carrier type progressive die for U-bending part pro-cess.Ghatrehnaby and Arezoo (2009) reported to develop an
automated nesting and piloting system for progressive dies.Some
researchers reported to have developed intelligent CAD systems for
progressive die.For example,Duffy and Sun (1991) developed a
knowledge-based system for the design of progressive stamping
dies using a feature-based approach.Lee,Lim,and Nee (1993)
developed IKOOPP,an intelligent knowledge-based process plan-ning system for the manufacture of progressive die plates.Cheok,
Foong,and Nee (1996) reported to have developed an intelligent
planning aid for progressive die design using PC development
tools.Ismail,Chen,and Hon (1996) have also worked on expert
systems for progressive piercing and blanking die design.Zheng,
Wang,and Li (2007) have developed intelligent CAPP system for
automobile panels.

英语翻译1.IntroductionA progressive die is used worldwide for mass production ofsheet metal parts.Design of progressive die is a complex andhighly specialized procedure and typically progressive die designtakes 20% of the lead time from the conce
简介
顺序冲模法在世界上被广泛用于钣金零件的大规模生产.顺序冲模的设计不仅需要复杂和高度专业化流程,而且从概念设计到最终冲压生产,一般的顺序冲模需要耗费20%的生产提前期.顺序冲模能生产出丰富多样的产品,这就要求冲模设计者具有从多年的实际经验中获得的专业知识.设计顺序冲模的主要工作内容包括：检查钣金零件的设计特点,工序排样设计,模具元件的选择,模具元件所用材料的选择,模具元件和模具生产线的建模.传统方法需要设计者具有专业知识,人力工作量大而乏味,耗费世间,容易出错.过去模具设计的质量很大程度赖于设计者的技术,经验和知识.如今许多研究者正在为顺序冲模开发计算机辅助系统.（更多专业译文,找Q ⑨①〇①⑧〇〇⑧③）