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- 1 - 摘 要 汽缸蓋是發(fā)動機(jī)的幾大關(guān)鍵之一，零件尺寸較小，但結(jié)構(gòu)形狀復(fù)雜，有若干精度要 求較高的平面和孔系。本文主要分析和設(shè)計(jì)的是汽缸蓋零件的加工工藝和、專用夾 具等。通過查閱各種相關(guān)書籍，分析缸蓋的結(jié)構(gòu)及其功能，編寫了發(fā)動機(jī)缸蓋零件 的加工工藝；經(jīng)過計(jì)算選擇其切削用量、選擇機(jī)床和工藝設(shè)備，設(shè)計(jì)出了專用夾具。 關(guān)鍵詞：加工工藝；發(fā)動機(jī)缸蓋；專用夾具 - 2 - Abstract The cylinder cover is one of several toll-gates to launch the engine keys, the spare parts size is smaller, but the construction shape is complicated, how many the accuracy request the higher flat surface with the bore department. Analyze primarily here with design of is a cylinder cover the spare parts processes the craft, appropriation tongs and so on .Pass to check every kind of related book, analyze construction and its functions of an urn of covers, weave to write a cover spare parts process the craft; Passing by the calculation chooses its slice the dosage of cut, choice machine tools with craft equipments, design appropriation tongs. Key words: processing technic， Engine cylinder cover; special fixture - 3 - 目錄 摘要 .I ABSTRACT.II 前言 .V 1 緒論 .1 1.1 課題研究的意義及現(xiàn)狀 .1 1.2 論文主要研究內(nèi)容 .3 2 發(fā)動機(jī)缸蓋工藝設(shè)計(jì) .5 2.1 發(fā)動機(jī)缸蓋的分析 .5 2.2 發(fā)動機(jī)缸蓋毛坯的設(shè)計(jì) .9 2.3 工藝路線設(shè)計(jì) . 14 2.4 加工設(shè)備及工藝裝備的選擇 .22 2.5 加工工序設(shè)計(jì) .24 3 鉆床專用夾具設(shè)計(jì) .33 3.1 問題的提出 .33 3.2 機(jī)床夾具的分類 .34 3.3 夾具的設(shè)計(jì)內(nèi)容 .34 3.4 鉆床夾具特 點(diǎn).40 3.5 鉆套與工件間的距離 .40 3.6 夾具的對刀 .41 - 4 - 3.7 夾具體的設(shè)計(jì) .41 4 銑床專用夾具設(shè) 計(jì).43 4.1 銑前后面專用夾具. 43 結(jié)論 .46 參考文獻(xiàn) .47 致謝 .48 附錄 .49