机械5

套管加工工艺及车外圆夹具设计 摘要 此次设计任务是对套管零件的机械加工工艺夹具的设计，主要包括对零件图的分析、毛坯的选择、零件的装夹、工艺路线的制订、刀具的选择、切削用量的确定、加工工艺文件的填写。选择正确的加工方法，设计合理的加工工艺过程。此外还对套管零件的工序的加工设计了专用夹具. 本文主要对套管零件主要以V形块和支承板来定位，靠直压板和弹簧来夹紧，因此要降低V形块高度，夹具设计要方便、简单。 关键词：加工工艺，加工方法，工艺文件，夹具 ABSTRACT The desig
n task is the desig
n of the machi
ni
ng process fixture for the casi
ng parts. It mai
nly i
ncludes the a
nalysis of the parts diagram, the selectio
n of bla
nk, the clampi
ng of parts, the formulatio
n of the process route, the selectio
n of cutti
ng tools, the determi
natio
n of cutti
ng parameters a
nd the filli
ng of the processi
ng docume
nts. Choose the right processi
ng method, desig
n a reaso
nable processi
ng process. I
n additio
n, a special fixture is desig
ned for the processi
ng of the casi
ng parts I
n this paper, the mai
n part of the sleeve is V block a
nd supporti
ng plate to locate, straight clamp a
nd spri
ng clampi
ng, therefore, to reduce the height of V block, fixture desig
n is co
nve
nie
nt a
nd simple. Keywords: processi
ng tech
nology, processi
ng methods, process docume
nts, fixtures 目录 摘要II ABSTRACT I 1绪论3 1.1机械加工工艺概述3 1.2机械加工工艺流程3 1.3夹具概述4 1.4机床夹具的功能4 1.5机床夹具的发展趋势5 1.5.1机床夹具的现状5 1.5.2现代机床夹具的发展方向5 2零件分析7 2.1零件的作用7 2.2零件的工艺分析7 3工艺规程设计9 3.1确定毛坯的制造形式9 3.2基面的选择9 3.2.1粗基准选择9 3.2.2精基准的选择9 3.3制定工艺路线9 3.4机械加工余量、工序尺寸及毛坯尺寸的确定12 3.5确定切削用量12 4车外圆夹具设计19 4.1问题的提出19 4.2定位基准的选择19 4.3定位元件的设计19 4.4切削力及夹紧力计算19 4.5定位误差分析21 4.6夹具设计及操作简要说明21 总结22 参考文献23 致谢24