【正文】 以在不進(jìn)行實(shí)際澆注的情況下，模擬鑄造的充型、凝固、傳熱、應(yīng)力場(chǎng)、微觀組織分布、縮孔及縮松的形成等過程，可以大大提高生產(chǎn)效率和經(jīng)濟(jì)效益，對(duì)于鑄造生產(chǎn)具有十分重要的意義。 著 重分析鑄造過程中充型、凝固過程，及其速度場(chǎng)、溫度場(chǎng)的變化情況，并針對(duì) 模擬 結(jié)果進(jìn)行 鑄造 工藝的優(yōu)化，再次模擬，分析整個(gè)充型、凝固過程，并與前方案的處理結(jié)果進(jìn)行 對(duì)比。主要結(jié)論如下： （ 1） 鑄造的過程中澆注方案的優(yōu)劣直接影響鑄件的成品率以及鑄造 成本的大?。? （ 2） 運(yùn) 用 SolidWorks軟件對(duì)鑄件及澆注系統(tǒng)的三維設(shè)計(jì)是 鑄造 模擬的前期準(zhǔn)備，繪制的準(zhǔn)確度直接影響后期的模擬結(jié)果 ； （ 3） AnyCasting 軟件對(duì) 鑄造 模擬能比較準(zhǔn)確的反應(yīng)鑄件 的充型、凝固過程的實(shí)際情況，預(yù)測(cè)可能產(chǎn)生的鑄造缺陷及缺陷部 位 ； （ 4） 根據(jù)鑄造模擬的結(jié)果，優(yōu)化鑄造工藝，然后分析結(jié)果再次優(yōu)化方案，最終確定最優(yōu)方案。 (2) Using SolidWorks software entity design of casting and pouring system is casting simulation preparation, late draw directly influences the accuracy of the simulation results。 (4) According to the result of casting simulation, optimization of casting process, and then the results of the analysis optimization scheme again, ultimately determine the optimal solution. KEY WORDS:SolidWorks modeling； AnyCasting software； casting 寧夏大 學(xué)機(jī)械工程學(xué)院 2020 屆畢業(yè)設(shè)計(jì) III 目 錄 1 緒 論 .......................................................................................................................... 1 鑄造工藝簡(jiǎn)介 .......................................................................................................... 1 鑄造行業(yè)的現(xiàn)狀 ...................................................................................................... 2 國內(nèi)鑄造行業(yè)的現(xiàn)狀及發(fā)展趨勢(shì) .......................................................................... 2 發(fā)達(dá)國家鑄造業(yè)現(xiàn)狀及發(fā)展趨勢(shì) .......................................................................... 2 鑄造模擬的介紹 ...................................................................................................... 3 鑄造工藝計(jì)算機(jī)輔助設(shè)計(jì) ................................................................................... 3 鑄造工藝計(jì)算機(jī)輔助設(shè)計(jì)的特點(diǎn) ....................................................................... 4 圖形處理的軟件系統(tǒng) ........................................................................................... 5 鑄造仿真軟件介紹 ............................................................................................... 7 本課題的研究思路 .................................................................................................. 7 2 鑄造工藝方案的設(shè)計(jì) ................................................................................................ 9 閥蓋的屬性與結(jié)構(gòu) .................................................................................................. 9 鑄件的基本屬性 ................................................................................................... 9 鑄件材料屬性 ..................................................................................................... 10 零件結(jié)構(gòu)的鑄造工藝性 ........................................................................................ 10 造型和造芯方法的選擇 ........................................................................................ 11 澆注位置的確定 .................................................................................................... 11 分型面的選擇 ........................................................................................................ 12 砂箱中鑄件的數(shù)量及排列方式 ............................................................................ 13 3 鑄造工藝參數(shù)及砂芯的設(shè)計(jì) .................................................................................. 14 鑄造工藝參數(shù)的確定 ............................................................................................ 14 鑄件尺寸公差 ..................................................................................................... 14 鑄件重量公差 ..................................................................................................... 14 機(jī)械加工余量 ..................................................................................................... 15 鑄造收縮率 ......................................................................................................... 16 起模斜度 ............................................................................................................. 17 最小鑄出孔及槽 ................................................................................................. 17 工藝補(bǔ)正量 ......................................................................................................... 18 分型負(fù)數(shù) ............................................................................................................. 18 其它工藝參數(shù)的設(shè)計(jì) ......................................................................................... 18 砂芯的設(shè)計(jì) ............................................................................................................ 18 寧夏大 學(xué)機(jī)械工程學(xué)院 2020 屆畢業(yè)設(shè)計(jì) IV 芯頭的設(shè)計(jì) ......................................................................................................... 19 芯頭長(zhǎng)度 ............................................................................................................. 19 芯頭斜度 ............................................................................................................. 20 芯頭間隙 ............................................................................................................. 20 4 澆注系統(tǒng)的設(shè)計(jì) ...................................................................................................... 22 澆注系統(tǒng)類型的選擇 ............................................................................................ 22 直澆道的設(shè)計(jì) ........................................................................................................ 23 橫澆道的設(shè)計(jì) ........................................................................................................ 23 內(nèi)澆道的設(shè)計(jì) ........................................................................................................ 24 澆口杯的設(shè)計(jì) ........................................................................................................ 24 5 鑄件的仿真與模擬 .................................................................................................. 25 軟件模塊介紹 .............................................................