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
在薄板金属器件的大规模生产中,全世界都采用拉伸磨具,拉伸模具的设计是一个非常复杂,专业的程序,通常要占用从订货到交货所需时间的20%,拉伸模具产品的多样性要求模具设计人有相当高的专业知识,而这些知识来自于多年的实际经验,
薄板金属器件设计特性的检验,展开图的设计,组合模具的材料选择,模具的组合模式,模具的装配都是拉伸模具设计的主要内容,用传统方法做这些工作需要非常专业的知识和技能,而且大部分但是手工活,即乏味,耗时又容易出错,设计水平在很大程度上取决于设计人员的专业技能,经验和知识,研究人员一直在研发拉伸模具的计算机辅助设计系统,例如,Murikama and Shirai（可能是日本的公司名或是研究人员的名字）1989年开发出了CAD/CAM计算机系统,该系统能够作出组合模具和标定尺寸的零件示图, 但式样草图和模具展开图还需要设计人员手工制作,新加坡国立大学和新加坡高性能计算机研究院的研究人员报告说已开发出一种集模型制作,示意图制作集成系统,用于拉伸模具拉弯操作的设计,
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.