摘要 汽缸盖是发动机的几大关键之一，零件尺寸较小，但结构形状复杂，有若干精度要求较高的平面和孔系。本文主要分析和设计的是汽缸盖零件的加工工艺和、专用夹具等。通过查阅各种相关书籍，分析缸盖的结构及其功能，编写了发动机缸盖零件的加工工艺；经过计算选择其切削用量、选择机床和工艺设备，设计出了专用夹具。 关键词：加工工艺；发动机缸盖；专用夹具 Abstract The cyli
nder cover is o
ne of several toll-gates to lau
nch the e
ngi
ne keys, the spare parts size is smaller, but the co
nstructio
n shape is complicated, how ma
ny the accuracy request the higher flat surface with the bore departme
nt. A
nalyze primarily here with desig
n of is a cyli
nder cover the spare parts processes the craft, appropriatio
n to
ngs a
nd so o
n .Pass to check every ki
nd of related book, a
nalyze co
nstructio
n a
nd its fu
nctio
ns of a
n ur
n of covers, weave to write a cover spare parts process the craft; Passi
ng by the calculatio
n chooses its slice the dosage of cut, choice machi
ne tools with craft equipme
nts, desig
n appropriatio
n to
ngs. Key words: processi
ng tech
nic， E
ngi
ne cyli
nder cover; special fixture 目录 摘要I Abstract II 前言V 1绪论1 1.1课题研究的意义及现状1 1.2主要研究内容3 2发动机缸盖工艺设计5 2.1发动机缸盖的分析5 2.2发动机缸盖毛坯的设计9 2.3工艺路线设计14 2.4加工设备及工艺装备的选择22 2.5加工工序设计24 3钻床专用夹具设计33 3.1问题的提出33 3.2机床夹具的分类34 3.3夹具的设计内容34 3.4钻床夹具特点…………………………………………………….40 3.5钻套与工件间的距离.40 3.6夹具的对刀41 3.7夹具体的设计41 4铣床专用夹具设计…………………………………………………….43 4.1铣前后面专用夹具…………………………………………….. 43 结论46 参考文献47 致谢48 附录49