摘要 在生产过程中，使生产对象（原材料，毛坯，零件或总成等）的质和量的状态发生直接变化的过程叫工艺过程，如毛坯制造，机械加工，热处理，装配等都称之为工艺过程。在制定工艺过程中，要确定各工序的安装工位和该工序需要的工步，加工该工序的机车及机床的进给量，切削深度，主轴转速和切削速度，该工序的夹具，刀具及量具，还有走刀次数和走刀长度，最后计算该工序的基本时间，辅助时间和工作地服务时间。 关键词工序工艺定位方案 Abstract E
nable produci
ng the target i
n process of productio
n (raw materials, the bla
nk , state of quality a
nd qua
ntity o
n part become always ) take place direct course of cha
nge ask craft course, if the bla
nk is made, machi
ni
ng, heat treatme
nt , assemble etc. a
nd call it the craft course. I
n the course of maki
ng the craft , is it co
nfirm every erector locatio
n a
nd worker step that process
need this of process to wa
nt, the locomotive of processi
ng , this process , a
nd the e
nteri
ng the givi
ng amou
nt of the lathe, cut depth , the rotatio
nal speed of the mai
n shaft a
nd speed of cutti
ng, the jig of this process, the cutter a
nd measuri
ng tool, a o
ne hu
ndred sheets of
number of times still leaves a
nd a o
ne hu
ndred sheets of le
ngth leaves, calculate basic time of this process , auxiliary time a
nd service time of place of worki
ng fi
nally. Keywords The process worker o
ne orie
nt the scheme 目录 摘要0 Abstract 1 第1章绪论4 1.1选题的意义4 1.2夹具的发展方向4 1.3本章小结5 第2章拨叉的加工工艺规程设计6 2.1零件的分析6 2.1.1零件的作用6 2.1.2零件的工艺分析6 2.2确定生产类型7 2.3确定毛坯7 2.3.1确定毛坯种类7 2.3.2确定铸件加工余量及形状7 2.3.3绘制铸件零件图8 图2.1零件毛坯图8 2.4工艺规程设计8 2.4.1选择定位基准8 2.4.2制定工艺路线9 2.4.3选择加工设备和工艺设备10 2.4.4机械加工余量、工序尺寸及公差的确定10 2.5确定切削用量及基本工时11 工序10粗铣Φ25H7两端面11 工序20钻Φ25H7通孔12 工序30粗镗下端Φ60H12孔15 工序40半精镗下端Φ60H12孔16 工序50粗铣a、b面16 工序60钻Φ20.50孔17 工序70攻M22×1.5螺纹19 工序80粗铣16H11槽20 工序90半精铣16H11的槽20 工序100铣断Φ60H12孔21 工序110粗铣Φ60H12孔两端面22 工序120精铣Φ60H12孔两端面23 2.6本章小结23 第3章镗孔专用夹具设计24 3.1问题的提出24 3.2夹具的设计24 致谢27 参考文献28