【正文】 ding quenching medium type， quenching temperature and tempering temperature and time， must be properly selected， and whether using surface quenching or chemical heat treatment the parameters must be rightly determined． It is difficult to determine the parameters by puter fully． Since puter technology develops quickly in recent decades,the difficulty with large— scale calculation has been overe． By simulating and weighing the property， the cost and the required period after heat treatment． it is not difficult to optimize the heat treatment process． Data base for heat treatment A heat treatment database is described in Fig． 3． The database is the foundation of making out heat treatment process． Generally， heat treatment database is divided into materials database and process database． It is an inexorable trend to predict the property by materials and process． Although it is difficult to establish a property database， it is necessary to establish the database by a series of tests． The materials database includes steel grades,chemical positions， properties and home and abroad grades parallel tables． The process database includes heat treatment criterions， classes， heat preservation time and cooling velocity． Based on the database， heat treatment process can be created by inferring from rules． 北方民族大學(xué)學(xué)士學(xué)位論文 31 Tool and equipment for heat treatment After heat treatment process is determined， tool and equipment CAD／ CAE system transfers the information about design and manufacture to the numerical control device． Through rapid tooling prototype， the reliability of tool and the clamping apparatus can be judged． The whole procedure is transferred by work， in which there is no man— made interference． 3 Key Technique Coupling of temperature， microstructure， stress and property Heat treatment procedure is a procedure of temperaturemicrostructure — stress interaction． The three factors can all influence the property (see Fig． 4)． During heating and cooling， hot stress and transformation will e into being when microstructure temperaturemicrostructure and temperature— microstructure— and stressproperty interact on each other． Research on the interaction of the four factors has been greatly developed,but the universal mathematic model has not been built． Many models fit the test nicely， but they cannot be put into practice． Difficulties with most of models are solved in analytic solution， and numerical method is employed so that the inaccuracy of calculation exists． Even so， paring experience method with qualitative analysis， heat treatment simulation by puter makes great progress． Establishment and integration of models 北方民族大學(xué)學(xué)士學(xué)位論文 32 The development procedure for die and mould involves design,manufacture， heat treatment， assembly， maintenance and so on． They should have own database and mode1． They are in series with each other by the entity— relation model． Through establishing and employing dynamic inference mechanism ， the aim of optimizing design can be achieved． The relation between product model and other models was built． The product model will change in case the cell model changes． In fact， it belongs to the relation of data with die and mould． After heat treatment model is integrated into the system， it is no more an isolated unit but a member which is close to other models in the system． After searching， calculating and reasoning from the heat treatment database,procedure for heat treatment ， which is restricted by geometric model,manufacture model for die and mould and by cost and property， is obtained． If the restriction is disobeyed， the system will send out the interpretative warning． All design cells are connected by munication work． Management and harmony among members Agile management and harmony redound to municating information ， increasing efficiency， and reducing redundancy． Meanwhile it is beneficial for exciting creativity， clearing conflict and making the best of resource． 4 Conclusions (1) Heat treatment CAD／ CAE has been integrated into concurrent design for die and mould and heat treatment is graphed,which can increase efficiency， easily discover problems and clear conflicts． (2) Die and mould development is performed on the same platform． When the heat treatment process is made out， designers can obtain correlative information and transfer selfinformation to other design departments on the platform． (3) Making out correct development schedule and adjusting it in time can enormously shorten the development period and reduce cost． 北方民族大學(xué)學(xué)士學(xué)位論文 33 附錄 (二 ) 翻譯原文 模具熱處理及其導(dǎo)向平行設(shè)計 李雄， 張鴻冰 ， 阮雪榆 ，羅中華， 張艷 摘要 ： 在一系列方式中，傳統(tǒng)模具設(shè)計方法存在許多缺點。 北方民族大學(xué)學(xué)士學(xué)位論文 24 第六章 結(jié)束語 本次 畢業(yè)設(shè)計 是在指導(dǎo)老師 李海玲 的指導(dǎo)下完成的。 墊板 的外形多與凸模固定板一致。一般采用臺階式固定方式，選取 6/7 mH 的過渡配合。模柄的標(biāo)準(zhǔn)結(jié)構(gòu)共有 7 類11 種。 其他零部件結(jié)構(gòu) ， 當(dāng)凹模安裝在上模上時，擋料銷只能設(shè)置在位于 下模的卸料板上。 凸凹模的高度 H 由兩部分組成，分別為工作部分 1h ， 和固定部分 2h 。 取A= L=18+15+17=50mm 。 c —— 凹模壁厚（指最小壁厚） ， mm。 查表，得磨損系數(shù) ?x ， 兩個方向的尺寸都 為 B 類尺寸，取 4??d? ， 有公式得 0 4m i n1 )()( ???? ??????? xBB 0 4m i n2 )()( ???? ??????? xBB 北方民族大學(xué)學(xué)士學(xué)位論文 21 圖六 凸模刃口 北方民族大學(xué)學(xué)士學(xué)位論文 22 第五章 模具主要零件結(jié)構(gòu)設(shè)計 凸 \凹模零件的設(shè)計 。 落料刃口尺寸均為 A 類尺寸，取 4??d? ，有公式得到： a x11 )()( 1 ???? ??????? xAA a x22 )()( 2 ???? ??????? xAA 北方民族大學(xué)學(xué)士學(xué)位論文 20 0 a x33 )()( 3 ???? ??????? xAA 對于原形尺寸簡單化處理，都取與零件外形輪廓線相切，即尺寸相等。 （ 1）查《模具設(shè)計與制造》第三十五頁表 213，確定沖裁間隙為 mmZ ? ， mmZ ? 。 暫選 J2310 壓力機(jī)。 有公式計算推北方民族大學(xué)學(xué)士學(xué)位論文 16 件力得 )()0 1 9 4 (0 5 )( 321 kNFFFnKFnKF ccctctt ?????????? （ 3） 查《模具設(shè)計與制造》第四十一頁表 216，得 ?xK 。 那么：條料的寬度： ? ?? ? ? ?? ? m