摘要 这次设计的是十字轴机械加工工艺规程及工艺装备设计，包括零件图、毛坯图、装配图各一张，机械加工工艺过程卡片和与工序卡片各一张。首先我们要熟悉零件和了解其作用，它位于车床变速机构中，主要起换档作用。然后，根据零件的性质和零件图上各端面的粗糙度确定毛坯的尺寸和械加工余量。最后拟定拨差的工艺路线图，制定该工件的夹紧方案， 画出夹具装配图。 就我个人而言，我希望能通过这次课程设计，了解并认识一般机器零件的生产工艺过程，巩固和加深已学过的技术基础课和专业课的知识，理论联系实际，从中锻炼自己分析问题、解决问题的能力，为今后的工作打下一个良好的基础，并且为后续课程的学习打好基础。 Abstract This desig
n is the cross shaft machi
ni
ng process specificatio
n a
nd process equipme
nt desig
n, i
ncludi
ng a part drawi
ng, a bla
nk drawi
ng, a
n assembly drawi
ng, a machi
ni
ng process card a
nd a process card. First of all, we should be familiar with the parts a
nd u
ndersta
nd their fu
nctio
ns. It is located i
n the speed cha
nge mecha
nism of the lathe a
nd mai
nly plays the role of gear shifti
ng. The
n, the size a
nd machi
ni
ng allowa
nce of the bla
nk are determi
ned accordi
ng to the
nature of the part a
nd the rough
ness of each e
nd face o
n the part drawi
ng. Fi
nally, draw up the process roadmap of the differe
nce adjustme
nt, a
nd formulate the clampi
ng scheme of the workpiece, Draw the fixture assembly drawi
ng. Perso
nally, I hope that through this course desig
n, I ca
n u
ndersta
nd a
nd u
ndersta
nd the productio
n process of ge
neral machi
ne parts, co
nsolidate a
nd deepe
n the k
nowledge of basic tech
nical courses a
nd professio
nal courses I have lear
ned, i
ntegrate theory with practice, exercise my ability to a
nalyze a
nd solve problems, lay a good fou
ndatio
n for future work, a
nd lay a good fou
ndatio
n for the study of subseque
nt courses. 目录 一、零件的工艺分析1 二.机械加工工艺设计2 1、确定生产类型2 2、确定毛坯2 2.1、确定毛坯种类： 2 2.2、确定锻件加工余量及形状： 2 三、工艺规程设计4 3.1选择定位基准： 4 3.2制定工艺路线: 4 3.3表面加工方法的确定5 3.4加工阶段的划分5 3.5工序顺序的安排5 3.6确定工艺路线6 四.机械加工余量、工序尺寸及公差的确定7 4.1钻铰φ8丝孔的工序尺寸7 4.1.1.钻Φ5丝孔，以φ25轴线为基准。 7 4.2.2钻孔工步7 4.3时间定额的计算： 7 4.4其它时间计算8 五、夹具设计9 5.1夹具选择9 5.1.1问题的提出9 5.1.2夹具设计10 5.2、定位误差分析10 5.3、夹具设计及操作的简要说明11 六.参考文献12