殼體壓鑄模的設(shè)計(jì)與制造畢業(yè)論文-文庫(kù)吧在線文庫(kù)
【正文】 料時(shí)，有激冷作用，這樣在每一個(gè)壓鑄環(huán)中，由于周期性的忽冷忽熱作用而形成交變熱應(yīng)力造成熱疲勞裂紋；同時(shí)，抽芯和頂出鑄件時(shí)有磨損以及夜流和氣體的腐蝕作用等，因此壓鑄模成型零部件的材料應(yīng)符合下列要求：①在高溫下具有較高的強(qiáng)度硬度抗回火的穩(wěn)定性和良好的沖擊性。Δ′=（L+Lφ）177。177。Δ′=（L+Lφ）177。 A —壓鑄件的公稱尺寸（mm）。壓鑄模的成型零件主要是指鑲塊和型芯，在結(jié)構(gòu)形式上，分為整體式結(jié)構(gòu)和鑲拼式結(jié)構(gòu)兩種。多型腔模具的優(yōu)點(diǎn)有：鑄件成形的生產(chǎn)率高，鑄件的成本低。（3） 為保證鑄件的尺寸精度，應(yīng)使尺寸精度要求高的部分盡可能位于同一半壓鑄模內(nèi)。壓室充滿度計(jì)算公式為 Φ=mj/ms100%=4mj/πd2lρ100% [1]式中 Φ—壓室充滿度（%）； mj—澆入壓室金屬液的質(zhì)量（g）； ms—壓室內(nèi)完全充滿金屬液的質(zhì)量（g）。取壓室直徑Φ60mm,壓室內(nèi)最大鋁合金澆注量為2kg，,故滿足要求。103 [1]式中：Fs—鎖模力；Fz—模具無(wú)側(cè)向抽芯時(shí)的膨脹力（KN）；K—安全系數(shù)，一般取1~，小型壓鑄件取小值，大型壓鑄件取大值；Pb—壓射比壓；A—鑄件、澆注系統(tǒng)及排溢系統(tǒng)在分型面上的投影面積之和（m2）。在組織產(chǎn)品為少品種,大批量生產(chǎn)時(shí),要選用配備各種機(jī)械化和自動(dòng)化的機(jī)構(gòu),控制系統(tǒng)及裝置的壓鑄機(jī)。本文從具體零件工藝分析入手詳略得當(dāng)?shù)慕榻B了壓鑄工藝、壓鑄機(jī)的選用、壓鑄模的設(shè)計(jì)等。工業(yè)產(chǎn)品零件粗加工的75%，精加工的50%及塑料零件的90%是由模具完成的。有權(quán)將學(xué)位論文的內(nèi)容編入有關(guān)數(shù)據(jù)庫(kù)進(jìn)行檢索。2009屆本科生畢業(yè)論文 學(xué)校代碼：12795學(xué) 號(hào)：050212050134殼體壓鑄模的設(shè)計(jì)與制造院 系： 光信息機(jī)電工程系 專 業(yè)：機(jī)械設(shè)計(jì)制造及其自動(dòng)化姓 名： 于鐘林 指導(dǎo)教師： 陳東星 二〇〇九年五月 學(xué)位論文獨(dú)創(chuàng)性聲明本人所呈交的學(xué)位論文是我在導(dǎo)師的指導(dǎo)下進(jìn)行的研究工作及取得的研究成果。有權(quán)將學(xué)位論文的標(biāo)題和摘要匯編出版。模具制造的工藝方法可以分為鍛造、熱處理、切削加工、表面處理和裝配等，其中以切削加工為主要的加工方法?！娟P(guān)鍵詞】壓鑄模 模具 工藝 數(shù)控技術(shù)【論文類型】理論實(shí)踐研究型AbstractThe pression casting process is a less efficient, noncutting metal forming process,and the pression casting is fuses the condition or half fusing condition alloy pours in the diecasting machine the pressure room, under the high pressure function, in presses the mold by the extremely high speed backfill in the die space, and causes under the high pressure to fuse alloy cooling to congeal thus forms high benefit, high efficiency precision casting metal presses the mold formation technology is at present takes shape the nonferrous metal structural element important formation technique, the metal presses the mold is the pression casting formation important craft mold took the important craft equipment, in industry sectors and so on the consumable, electric appliance electron, automobile, airplane manufacture, holds the pivotal industry product ponents rough machining 75%, the precision work 50% and the plastic parts 90% are plete by the mold. The mold makes the technique may divide into forging, the heat treatment, the machining, the surface treatment and the assembly and so on, in which take machining as the main processing machining may divide into the cutting engine bed processing, the pliers processing and the special processing roughly and so on, the usual mold ponents processing craft route should follow the ordinary machinefinishing craft generally the basic the mold ponents the processing to be possible to divide into the template processing, Kong Jikong roughly is the processing, the formation ponents processing and so on, should act according to its own actual situation choice appropriate processing method to the different die body. Along with the world advance in technology and the machine tool industry development, the numerical control engine bed took the machine tool industry the mainstream product, has bee the realization equipment manufacturing industry modernization the essential equipment, is the national defense war industry equips the development the strategic numerical control engine bed capacity and the performance capability height, is weighs
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