1、PDF外文：http:/ (一 ) 外文原文 Heat Treatment of Die and MouldOriented Concurrent Design LI Xiong,ZHANG Hong-bing,RUANXue yu,LUOZhong hua,ZHANG Yan Abstract: Many disadvantages exist in the traditional die designmethodwhich belongs to serial pattern. It is well known that heat treatment is highly imp
2、ortant to the dies. A new idea ofconcurrent design for heat treatment processof die and mould was developed in order to overcome the existent shortcomings of heat treatment process. Heat treatment CAD/CAE was integrated with concurrent circumstance and the relevant model was built. These investigati
3、ons canremarkably improve efficiency, reduce cost and ensurequality of R and D for products. Key words:die design, heat treatment；,mould Traditional die and moulddesign,mainly by experience or semi experience， is isolated from manufacturing process.Before the design is finalized， the scheme of die a
4、nd mould is usually modified time and again， thus some disadvantages come into being,such as long development period,high cost and uncertain practical effect.Due to strong desires for precision,servicelife,development period and cost,modern die and mould should be designed and manufactured perfectly
5、.Therefore more and more advanced technologies and innovations have been applied,forexample,concurrentengineering,agile manufacturing virtual manufacturing,collaborativedesign,etc. Heat treatment of die and mould is as important as design,manufacture and assembly because it has a vital effect on man
6、ufacture， assembly and service life Design and manufacture of die and mould have progressed rapidly， but heat treatment lagged seriously behind them As die and mould industry develops， heat treatment must ensure die and mould there are good state of manufacture， assembly and wear resistant propertie
7、s by request. Impertinent heat treatment can influence die and mould manufacturing such as over hard and soft and assembly Traditionally the heat treatment process was made out according to the methods and properties brought forward by designer This could make the designers of die and mould and heat
8、 treatment diverge from each other， for the designers of die and mould could not fully realize heat treatment process and materials properties， and contrarily the designers rarely understood the service environment and designingthought. These divergences will impact the progress of die and mould to
9、a greatextent. Accordingly， if the process design of heat treatment is considered in the early designing stage， the aims of shortening development period， reducing cost and stabilizing quality will be achieved and the sublimation of developmentpattern from serial to concurrent will be realized
10、;Concurrent engineering takes computer integration system as a carrier,at the very start subsequent each stage and factors have been considered such as manufacturing，heat treating， properties and so forth in order to avoid the error The concurrentpattern has dismissed the defect of serial pattern,wh
11、ich bring about a revolution against serial pattern In the present work the heat treatment was integrated into the concurrent circumstance of the die and mould development， and the systemic andprofound research was performed 1 Heat Treatment Under Concurrent Circumstance The concurrent p
12、attern differs ultimately from the serial pattern(see Fig 1).With regard to serial pattern， the designers mostly consider the structure and function of die and mould， yet hardly consider the consequent process， so that the former mistakes are easily spread backwards Meanwhile， the design department
13、rarely communicates with the assembling， cost accounting and salesdepartments These problems certainly will influence the development progress of die and mould and the market foreground Whereas in the concurrent pattern， the relations among departments are close， the related departments all take par
14、t in the development progress of die and mould and have close intercommunion with purchasers This is propitious to elimination of the conflicts between departments， increase the efficiency and reduce the cost Heat treatment process
15、 in the concurrent circumstance is made out not after blueprint and workpiece taken but during die and mould designing In this way， it is favorable to optimizing the heat treatment process and making full use of the potential of the materials 2Integration of Heat Treatment CAD CAEfor Die and Mould It can be seen from Fig 2 that the process design and simulation of heat treatment are the core ofintegration frame After information input via product design module and heat treatment process generated via heat treatment CAD and heat
