【正文】 %～15%。如今，世界模具工業(yè)的發(fā)展甚至已超過了新興的電子工業(yè)。作為基礎(chǔ)工業(yè),模具的質(zhì)量、精度、壽命對其它工業(yè)的發(fā)展起著十分重要作用,在國際上被稱為“工業(yè)之母”,對國民經(jīng)濟(jì)的發(fā)展起著無可置疑的關(guān)鍵作用。 學(xué)號(hào) 20220607050514 密級(jí) 公開 蘭州城市學(xué)院本科畢業(yè)論文 計(jì)算機(jī)輔助塑料注射模具設(shè)計(jì)學(xué) 院 名 稱：培黎工程技術(shù)學(xué)院專 業(yè) 名 稱：機(jī)械設(shè)計(jì)制造及其自動(dòng)化學(xué) 生 姓 名：李海童指 導(dǎo) 教 師：王 玲 二○一三年五月II / 34目 錄第 1 章 緒論 模具工業(yè)的發(fā)展現(xiàn)狀 ..........................................................................................1 模具工業(yè)今后的主要發(fā)展方向 ..........................................................................1 計(jì)算機(jī)輔助設(shè)計(jì)系統(tǒng)的發(fā)展?fàn)顩r和趨勢 ..........................................................3 本課題研究的意義 ..............................................................................................4 論文的整體結(jié)構(gòu) ..................................................................................................5第 2 章 注塑模具介紹 塑料概述 ..............................................................................................................6 塑料的組成 ...................................................................................................6 塑料的特性 ..........................................................................................................6 熱塑性塑料成型的工藝特性 ..............................................................................6 注塑成型過程簡介 ..............................................................................................6 注塑模具分類 ......................................................................................................7 注塑模典型結(jié)構(gòu) ..................................................................................................7第 3 章 CPU 風(fēng)扇支架加工工藝分析 塑件概況 ..............................................................................................................9 材料選擇 ............................................................................................................10第 4 章 注射模具設(shè)計(jì)方案 注射機(jī)選擇及注射機(jī)的校核 ...........................................................................11 選擇注射機(jī) .................................................................................................11 注塑機(jī)的校核 .............................................................................................11III / 34 成型零部件設(shè)計(jì) ................................................................................................13 成型零部件分類及結(jié)構(gòu) .............................................................................13 成型尺寸計(jì)算 ............................................................................................14 澆注系統(tǒng)設(shè)計(jì) ...................................................................................................16 澆注系統(tǒng)的作用 .........................................................................................16 對澆注系統(tǒng)設(shè)計(jì)的具體要求 .....................................................................16 澆注系統(tǒng)的設(shè)計(jì) .........................................................................................16 側(cè)向分型與抽心機(jī)構(gòu)設(shè)計(jì) ...............................................................................17 側(cè)向分型與抽芯機(jī)構(gòu)的分類 ....................................................................18 側(cè)向分型與抽芯機(jī)構(gòu)的設(shè)計(jì) ..................................................................18 注塑模導(dǎo)向機(jī)構(gòu)設(shè)計(jì) ......................................................................................20 導(dǎo)向機(jī)構(gòu)的功能及其分類 ......................................................................20 設(shè)計(jì)要點(diǎn)及設(shè)計(jì)方案 .................................................................................20 頂出機(jī)構(gòu) ...........................................................................................................21 頂出機(jī)構(gòu)的分類 .........................................................................................21 頂桿脫模機(jī)構(gòu)的設(shè)計(jì)要點(diǎn) .........................................................................22 設(shè)計(jì)采用方案 .............................................................................................22 復(fù)位裝置 ............................................................................................................23 冷卻系統(tǒng)介紹 ....................................................................................................23 模具總體結(jié)構(gòu)分析 ............................................................................................24 模具用鋼 ..........................................................................................................25 塑料模具用鋼的必要條件 .......................................................................26 選擇鋼材的條件 .......................................................................................26 注塑模具常用材料 ...................................................................................26 模具的裝配與調(diào)試 ........................................