【導讀】指導下進行的研究工作及取得的成果。盡我所知，除文中特別加以標注。和致謝的地方外，不包含其他人或組織已經發(fā)表或公布過的研究成果，對本研究提供過幫助和做出過貢獻的個人或集體，均已在文中作。了明確的說明并表示了謝意。的規(guī)定，即：按照學校要求提交畢業(yè)設計（論文）的印刷本和電子版本；閱覽服務；學?？梢圆捎糜坝　⒖s印、數(shù)字化或其它復制手段保存論文；在不以贏利為目的前提下，學?？梢怨颊撐牡牟糠只蛉績热?。本聲明的法律后果由本人承擔。論文被查閱和借閱。本人授權大學可以將本學位論文的?；蛩苄宰冃?，從而獲得所需零件的加工方法。沖壓通常是在常溫下對材料進行冷變。沖模在實現(xiàn)沖壓加工中是必不可少的工藝裝備，與沖壓。件是“一模一樣”的關系，若沒有符合要求的沖模，就不可能生產出合格的沖壓件;本設計主要包括沖裁件的工藝性分析、另外，還附有畢業(yè)設計任務書、部分模具零件沖壓工藝過程卡以及

　　

【正文】 d mould． Modeling heating condition and phase transformation condition for die and mould during heat treatment are workable， because it has been broken through for the calculation of phase transformation thermodynamics ， phase transformation kiics ， phase 北方民族大學學士學位論文 30 stress,thermal stress， heat transfer， hydrokiics etc． For example， 3D heat— conducting algorithm models for local heating plicated impression and asymmetric die and mould ， and M ARC software models for microstructure transformation was used． Computer can present the informations of temperature， microstructure and stress at arbitrary time and display the entire transformation procedure in the form of 3D by coupling temperature field,microstructure field and stress field． If the property can be coupled,various partial properties can be predicted by puter． Heat treatment process design Due to the special requests for strength， hardness， surface roughness and distortion during heat treatment for die and mould， the parameters including 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． 北方民族大學學士學位論文 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 北方民族大學學士學位論文 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． 北方民族大學學士學位論文 33 附錄 (二 ) 翻譯原文 模具熱處理及其導向平行設計 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)模具設計方法存在許多缺點。眾所周知 ,熱處理對模具起著非常重要的作用。為了克服模具熱處理工藝存在的缺點，一種新的模具熱處理工藝并行設計方法已經被開發(fā)出來了。熱處理 CAD/CAE 技術是集成了并行環(huán)境和有關模型