本科畢業(yè)論文模具基于Moldflow軟件的MP4殼體注塑分析與.doc

基于Moldflow軟件的MP4殼體注塑分析與優(yōu)化設(shè)計(jì)Injection ProcessAnalysis and Optimized Designof MP4 Product Basedon theMoldflOW Software 專(zhuān) 業(yè) 研究生指導(dǎo)教師 機(jī)械工程學(xué)院201 1年5月中文摘要隨著現(xiàn)代工業(yè)的飛速發(fā)展，模具工業(yè)日益受到人們的重視和關(guān)注。注塑模具是塑料模具的重要組成部分。在注塑成型實(shí)際生產(chǎn)過(guò)程中，由于眾多復(fù)雜因素的影響，設(shè)計(jì)人員很難預(yù)測(cè)出制件上出現(xiàn)的缺陷，因此要經(jīng)過(guò)多次的試模、修模、調(diào)整工藝條件才能投入生產(chǎn)。如今，該種方法已不能滿(mǎn)足快速生產(chǎn)的需要，CAE技術(shù)雪借自身優(yōu)勢(shì)，已經(jīng)成為注塑模具設(shè)計(jì)中不可或缺的一部分。本課題利用最常用的模具CAE軟件Moldflow，對(duì)原始設(shè)計(jì)方案進(jìn)行流動(dòng)、冷卻、翹曲三方面的模擬分析，模擬出型腔中塑料熔體的流動(dòng)、保壓和冷卻過(guò)程，并通過(guò)原始設(shè)計(jì)方案的分析結(jié)果，預(yù)測(cè)出制件在流動(dòng)和翹曲方面上的缺陷。針對(duì)制件在熔接痕和收縮變形上的缺陷，列舉出的缺陷產(chǎn)生的原因和解決辦法。首先利用最佳澆口位置模塊進(jìn)行澆口位置的優(yōu)化設(shè)計(jì)，改善了制件熔接痕的大小和位置，然后利用軟件中的成型工藝窗口模塊分析出最佳的成型工藝條件，優(yōu)化后收縮變形量略微有所減小，最后利用對(duì)保壓曲線的優(yōu)化設(shè)計(jì)，將變形量降低到規(guī)定范圍內(nèi)。本文的研究成果對(duì)于提出合理的注塑成型方案具有十分重要的指導(dǎo)意義。同時(shí)。為針對(duì)復(fù)雜注塑模具設(shè)計(jì)利用Moldflow軟件進(jìn)行有限元分析，探索出一條切實(shí)可行的途徑。關(guān)鍵詞：Moldflow注塑成型熔接痕翹曲優(yōu)化設(shè)計(jì)MP4殼體ABSTRACTWith the rapid evelopment of modem industry,mold industry has been widely used and concernedInjection mold is one of the important components for the plastic moldIn the actual production of the injection molding，defects of the products aredifficult to predict due to the influence of many factorsThe problem was solved by the repeated repairing mold，test mold adjusted thetechnological conditions and then to put it into productionNowadays，this method can not satisfy the requirements of the rapid productionWith advantages of its own,CAE technologyhas become alle ffective method to analyze thecomplex defects in the injection mold design In this paper original scheme in the three fields of flow，cool and warpage was simulated and analyzed using the common mold CAE software-Mold flowThe resuks obtained include the process of the plastics melt how to flow，pack and cool in the cavityAccording to the analytic results of the original scheme defects of the flow and warpage WbTe predictedAt the same time，ther easons and solutions of the defects onthe weld lines and shrinkage deformations were proposedOn the basis of the above analysis work,first the gate location optimal design by thebest gate location module is carried onThe sizes and poskions of the weld lines were improvedSecond，the optimal processing conditions bythe molding window modulew ere proposedTheshrinkage deformations were decreased a littleFinally,this paper using the packing pressure curve optimizing function to make the deformations decreased the reasonable range The research results in this paper are of greats ignificance for the reasonable inject moldschemeSimultaneously,anachievable way is explored for the FEA of the complex inject mold design by using the Mold flow softwareKey words：Moldflow，injection molding，weld lines，wargape，simulation analysis，MP4 product目錄第一章塑料模具中的CAE技術(shù)111注塑成型CAE技術(shù)的研究現(xiàn)狀1111充填保壓模擬模塊2112冷卻模擬模塊2113殘余應(yīng)力與翹曲變形分析模塊一212 CAE技術(shù)在塑料模具中的應(yīng)用。313注塑成型CAE技術(shù)存在的主要問(wèn)題414課題的背景及主要研究?jī)?nèi)容。4141課題的背景4142課題研究的主要內(nèi)容6第二章Moldflow分析基礎(chǔ)721注塑成型過(guò)程及成型工藝條件7211注塑成型過(guò)程。7212注塑成型的工藝條件822注塑成型充填過(guò)程熔接痕形成的數(shù)學(xué)模型923翹曲變形的數(shù)學(xué)模型lO24本章小結(jié)1l第三章原始方案注塑過(guò)程模擬分析1231制件的結(jié)構(gòu)分析與有限元網(wǎng)格模型的建立1232分析類(lèi)型的選擇與成型材料的選擇14321分析類(lèi)型的選擇14322成型材料的選擇1433原始澆注系統(tǒng)和冷卻系統(tǒng)方案設(shè)計(jì)15331原始澆注系統(tǒng)方案設(shè)計(jì)1 5332原始冷卻系統(tǒng)方案設(shè)計(jì)1 634注塑工藝參數(shù)的設(shè)置18341注塑工藝參數(shù)對(duì)注塑成型的影響18342工藝過(guò)程參數(shù)的設(shè)置1935分析計(jì)算與原始方案注塑過(guò)程模擬結(jié)果分析19351流動(dòng)結(jié)果分析20352冷卻結(jié)果分析22羲聲353翹曲分析2336本章小結(jié)26第四章原始方案的優(yōu)化設(shè)計(jì)2741原始方案的缺陷分析27411熔接痕產(chǎn)生的原因及解決辦法27412翹曲變形產(chǎn)生的原因及解決辦法2842澆口位置優(yōu)化設(shè)計(jì)29421澆口位置的選擇原則29422最佳澆口位置的確定30423澆口位置的改進(jìn)方案與改進(jìn)后的熔接痕結(jié)果分析304-3成型工藝的優(yōu)化設(shè)計(jì)3l43。l成型工藝窗口分析3l432成型工藝改進(jìn)后的翹曲變形分析結(jié)果3244保壓曲線的優(yōu)化設(shè)計(jì)33441保壓曲線的調(diào)整33442保壓曲線改