机械5

摘要 此次设计任务是对织机曲轴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。此外还对织机曲轴零件的工序的加工设计了专用夹具. 本文主要对织机曲轴零件主要以V形块和支承板来定位，靠直压板和弹簧来夹紧，铣键槽时2个V形块与铣刀不能干涉，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 graduatio
n desig
n task is to desig
n the fixture machi
ni
ng process of cra
nk shaft parts, i
ncludi
ng the parts of the a
nalysis, the choice of bla
nk, the clampi
ng, the formulatio
n process route, tool selectio
n, cutti
ng dosage, process docume
nts. Choose the correct methods for processi
ng, ma
nufacturi
ng process desig
n. I
n additio
n, processi
ng of loom cra
nk parts desig
n process special fixture. This paper focuses o
n the loom cra
nkshaft parts mai
nly i
n the V block a
nd the support plate to locate,
near the straight plate a
nd spri
ng clamp, keyway milli
ng for 2 V block i
nterfere
nce a
nd the cutter ca
n
not, so to reduce the V block height, fixture desig
n to be co
nve
nie
nt, simple. Keywords: processi
ng tech
nology, processi
ng methods, process, fixture 目录 摘要II ABSTRACT III 1绪论1 1.1机械加工工艺概述1 1.2机械加工工艺流程1 1.3夹具概述2 1.4机床夹具的功能2 1.5机床夹具的发展趋势3 1.5.1机床夹具的现状3 1.5.2现代机床夹具的发展方向3 2零件分析5 2.1零件的作用5 2.2零件的工艺分析5 3工艺规程设计7 3.1确定毛坯的制造形式7 3.2基面的选择7 3.2.1粗基准选择7 3.2.2精基准的选择7 3.3制定工艺路线7 3.4机械加工余量、工序尺寸及毛坯尺寸的确定9 3.5确定切削用量及基本工时10 3.6时间定额计算及生产安排30 4铣曲轴键槽专用夹具设计38 4.1定位基准的选择38 4.2定位元件的设计38 4.3铣削力与夹紧力计算39 4.4对刀块和塞尺设计40 总结43 参考文献44 致谢45