沖壓模具畢業(yè)設(shè)計(jì)外文翻譯--模具熱處理及其導(dǎo)向平行設(shè)計(jì)-模具設(shè)計(jì)-wenkub
2023-05-19 15:43:05 本頁面
【正文】 變，則產(chǎn)品模型也將改變。如果這種限制不服從，系統(tǒng)會發(fā)出解釋性的警告。首先，各項(xiàng)目組應(yīng)該確定其本身的控制條件和資源要求，同時(shí)了解不同環(huán)境下的工作程序，以避免發(fā)生沖突。同時(shí)這有利于激發(fā)人的創(chuàng)造力，消除阻礙和制定出最好的方法。 ⑶制定出正確的開發(fā)計(jì)劃并按時(shí)調(diào)整可以極大縮短開發(fā)周期和降低成本。 ⑵模型的開發(fā)已在同一個(gè)平臺運(yùn)行。如果開發(fā)受到限制則可逐步排除。 各部分之間的管理和協(xié)調(diào) 復(fù)雜的模具需要其中各項(xiàng)目組之間密切合作。當(dāng)熱處理模型集成到系統(tǒng)以后，它已不再是一個(gè)孤立的單位，而是一個(gè)部分，同時(shí)在系統(tǒng)中接近其它模型。它們通過事物的內(nèi)在聯(lián)系建立模型，互14 相串聯(lián)起來，盡管建立和運(yùn)用動(dòng)態(tài)推理機(jī)制，但其目的在于完成優(yōu)化設(shè)計(jì)。大部分模型的難點(diǎn)是用分析的方法處理的，同時(shí)數(shù)值方法也運(yùn)用了，導(dǎo)致存在不準(zhǔn)確的計(jì)算 。在加熱和冷卻期間，當(dāng)微觀結(jié)構(gòu)轉(zhuǎn)變時(shí)熱應(yīng)力和相變遲早會出現(xiàn)。通過快速模具成型，可靠的工具和夾具都能被確定。材料數(shù)據(jù)庫包括材料牌號、化學(xué)成分、性能和國內(nèi)外同級別目錄表。數(shù)據(jù)庫是制定熱處理工藝的基礎(chǔ)。 熱處理工藝設(shè)計(jì) 由于對強(qiáng)度和硬度，表面粗糙度和模具熱處理變形的特殊要求，淬火介質(zhì)的種類、淬火溫度、回火溫度和時(shí)間等參數(shù)特性必須經(jīng)過適當(dāng)?shù)倪x擇，以及是否使用表面淬火或化學(xué)熱處理，這種特性必須準(zhǔn)確的制定下來。在熱處理過程中，模具加熱條件和相變條件是切合實(shí)際的，因?yàn)橥ㄟ^計(jì)算相變熱力、相變動(dòng)力 、相應(yīng)力、熱應(yīng)力、傳熱速度、流體動(dòng)力等已經(jīng)取得重要突破。而且工具與夾具的CAD 和 CAE 也集成于這種系統(tǒng)中 。 (a) (b) (a)串行模式 （ b）并行模式 圖 11 并行環(huán)境下的熱處理工藝不是在方案和工件確定以后，而是在模具設(shè)計(jì)的時(shí)候制定出來的。與此同時(shí)，設(shè)計(jì)本門很少與裝配，預(yù)算會計(jì)和銷售部門溝通。并行模式已經(jīng)摒除了 串行模式的缺陷，由此帶來了一場對串行模式的革命。這樣會使模具設(shè)計(jì)師和熱處理工藝師意見產(chǎn)生分歧，而模具設(shè)計(jì)師卻不能充分地了解熱處理工藝和材料的性能，相反熱處理工藝師卻很少了解模具的使用環(huán)境和設(shè)計(jì)思路。模具設(shè)計(jì)與制造發(fā)展十分迅速，但是熱處理發(fā)展卻嚴(yán)重滯后它們。由于對精確性、使用壽命、開發(fā)期和費(fèi)用的嚴(yán)格要求，先進(jìn)的模具要求 設(shè)計(jì)和制造得十分完善。熱處理 CAD/CAE 技術(shù)是集成了并行環(huán)境和有關(guān)模型而建立的。 mould Traditional die and mould design,mainly by experience or semi— experience， is isolated from manufacturing process .Before the design is finalized， the scheme of die and mould is usually modified time and again， thus some disadvantages e into being,such as long development period,high cost and uncertain practical e to strong desires for precision,service life,development period and cost,modern die and mould should be designed and manufactured more and more advanced technologies and innovations have been applied,for example,concurrent engineering,agile manufacturing virtual manufacturing,collaborative design,etc. Heat treatment of die and mould is as important as design,manufacture and assembly because it has a vital effect on manufacture ， 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 properties by request. 1 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 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 designing thought. These divergences will impact the progress of die and mould to a great extent. 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 development pattern from serial to concurrent will be realized． Concurrent engineering takes puter 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 concurrent pattern has dismi
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