引言模具是汽車、電子、電器、航空、儀表、輕工、塑料、日用品等工業(yè)生產(chǎn)的重要工藝裝備，模具工業(yè)是國民經(jīng)濟的基礎(chǔ)工業(yè)。沒有模具，就沒有高質(zhì)量的產(chǎn)品。用模具加工的零件，具有生產(chǎn)率高、質(zhì)量好、節(jié)約材料、成本低等一系列優(yōu)點。因此已經(jīng)成為現(xiàn)代工業(yè)生產(chǎn)的重要手段和工藝發(fā)展方向。因此，模具技術(shù)，特別是制造精密、復(fù)雜、大型模具的技術(shù)，已成為衡量一個國家機械制造水平的重要標志之。模具在現(xiàn)代生產(chǎn)中，是生產(chǎn)各種工業(yè)產(chǎn)品的重要工藝裝備，它以其特定的形狀通過一定的方式使原材料成型。塑料模是指用于成型塑料制品的模具，它是型腔模的一種類型，其地位與重要性正日益被人們所認識。隨著塑料工業(yè)的飛速發(fā)展，以及通用塑料與工程塑料在強度和精度方面的不斷提高，塑料制品的應(yīng)用范圍也在不斷地擴大，如：家用電器、儀器儀表、建筑器材、汽車工業(yè)、日用五金等眾多領(lǐng)域，塑料制品所占的比例正迅猛增加。由于在工業(yè)產(chǎn)品中，一個設(shè)計合理的塑件往往能代替多個傳統(tǒng)金屬結(jié)構(gòu)件，加上利用工程塑料特有的性質(zhì)，可以一次成型非常復(fù)雜的形狀，并且還能設(shè)計成卡裝結(jié)構(gòu)，成倍地減少整個產(chǎn)品中的各種緊固件，大大地降低了金屬材料消耗量和加工及裝配工時，因此，近年來工業(yè)產(chǎn)品塑料化的趨勢不斷上升。注塑成型是塑料加工中最普遍采用的方法。該方法適用于全部熱塑性塑料和部分熱固性塑料，制得的塑料制品數(shù)量之大是其它成型方法望塵莫及的。由于注塑成型加工不僅產(chǎn)量多，而且適用于多種原料，能夠成批、連續(xù)地生產(chǎn)，并且具有固定的尺寸，可以實現(xiàn)生產(chǎn)自動化、高速化，因此具有極高的經(jīng)濟效益。隨著工業(yè)生產(chǎn)的迅速發(fā)展，注塑模具設(shè)計可以根據(jù)人們的具體要求進行產(chǎn)品的尺寸設(shè)計，設(shè)計一副能夠生產(chǎn)所給塑件、結(jié)構(gòu)合理、能保證制品的精度、表面質(zhì)量的模具產(chǎn)品，最大程度的滿足了用戶的需求。塑料模具工業(yè)在國民經(jīng)濟發(fā)展過程中發(fā)揮著越來越重要的作用。近年來，我國自主開發(fā)的塑料模CAD/CAM系統(tǒng)有了很大發(fā)展，主要有北航華正軟件工程研究所開發(fā)的CAXA系統(tǒng)、華中理工大學(xué)開發(fā)的注塑模HSC5.0系統(tǒng)及CAE軟件等，這些軟件具有適應(yīng)國內(nèi)模具的具體情況、能在微機上應(yīng)用且價格低等特點，為進一步普及模具CAD/CAM技術(shù)創(chuàng)造了良好條件。IntroductionMouldareautomobile,electronics,electricalappliances,aviation,instrument,lightindustry,plastic,dailynecessitiesandotherindustrialproductionofimportantprocessequipment,mouldindustryisthefoundationofthenationaleconomyindustry.Nomould,nohighqualityproducts.Withmoldprocessingparts,hasthegoodquality,highproductivity,materialsaving,lowcostaseriesofadvantages.Sohasbecomeanimportantmeansofmodernindustrialproductionandprocessdevelopmentdirection.Therefore,moldtechnology,especiallythemanufacturingprecision,complex,large-scaledietechnology,hasbecomethemeasureofanationalmachinerymanufacturingleveloneoftheimportantmarks.Mouldinmodernproduction,istheproductionofindustrialproductimportantprocessequipment,withitsparticularshapethroughacertainwaythatrawmaterialtoshape.Plasticmodelthatisusedforformingplasticproductsmould,itisatypeofthree-dimensionmodel,thestatusandimportanceisincreasinglyrecognized.Withtherapiddevelopmentofplasticindustry,andgeneralplasticandengineeringplasticsinstrengthandimprovethe

precision,plasticproductsapplicationscopehasbeenexpanded,suchas:householdelectrieappliances,instrumentsandmeters,construetionequipment,automobileindustry,dailyhardware,etc,plasticproductsistheproportionofincreasesrapidly.Becauseintheindustrialproducts,areasonabledesignofplasticpartscanoftenreplacemoretraditionalmetalparts,andbyusingtheengineeringplasticspecialnature,canshapeonceverycomplexshapes,andstilleandesignintocardoutfitstructure,multipliedtoreducetheproductsofvariouskindsoffasteners,greatlyreducingthemetalmaterialconsumptionandprocessingandassemblyhours,therefore,inrecentyearsindustrialproductsplastictrendofrising.Injectionmoldingplasticsprocessingisthemostwidespreaduseofthemethod.Thismethodisapplicabletoallthermoplasticsandthermosettingplasticparts,plasticproductsmadethegreatnumberofothermodelingmethodistocatchupwith.Becauseplasticinjectionproductionnotonly,anditisapplicableforvariousrawmaterials,cantocontinuouslyproduction,andhaveafixedsize,canachieveproductionautomation,fastpace,sohavehigheconomicbenefits.

Withtherapiddevelopmentofindustrialproduction,injectionmoulddesigncanpeopleaccordingtothespecificrequirementsforthesizeoftheproductdesign,thedesignisadeputytotheproductiontoplasticparts,reasonablestructure,canguaranteetheaccuracyoftheproducts,thesurfacequalityofthemold,thegreatestdegreeofsatisfactionoftheneedsoftheusers.Plasticmouldindustryinthenationaleconomydevelopmentprocessisplayingamoreandmoreimportantrole.Inrecentyears,ourcountryindependentdevelopmentofplasticmouldCAD/CAMsystemhadtheverybigdevelopment,basicallyhavebeihangsoftwareengineeringinstitute,wearethedevelopmentofCAXAsystemofhuazhonguniversityofscienceandtechnology,thedevelopmentofinjectionmoldHSC5.0systemandCAEsoftware