某十字轴零件机械加工工艺及其夹具设计 摘要 本文完成了十字轴零件的工艺规程及设计了铣26端面以及钻14孔的两套夹具。从零件的结构外形分析，它的外型复杂，且不易加工，因此该零件选用是锻件。它的主要加工面是孔、端面，在本设计中，先以一个面加工出一个基准面，然后，再以该基准面加工相应的孔。在整个加工过程中，分别采用了铣床、钻床。并设计了铣端面、钻孔的专用夹具，并对它们的定位分别采用了两个V型块定位，一挡销来辅助定位，铣床夹具用了三个V型块定位。由于该零件的尺寸不大，所需的夹紧力不大。因此，夹紧方式都采用手动夹紧，它的夹紧简单，机构的设计更为方便，满足夹紧要求。 关键词：十字轴零件；加工工艺；专用夹具； Desig
n Of Shaft Parts Machi
ni
ng Process A
nd Fixture Of A Cross Abstract This paper completed cross shaft parts writte
n a
nd 26 face milli
ng a
nd drilli
ng 14 holes of the two sets of fixture desig
n. From the a
nalysis of structure a
nd shape of parts, its shape is complex, a
nd
not easy to processi
ng, so the selectio
n of parts is forgi
ng. Its mai
n processi
ng is the hole surface, face, i
n the desig
n, first to a surface processi
ng of a refere
nce pla
ne, a
nd the
n, a
nd the
n i
n the base-level processi
ng correspo
ndi
ng holes. I
n the whole process of the milli
ng machi
ne, drilli
ng machi
ne, respectively. A
nd the desig
n of special fixture for milli
ng, drilli
ng, a
nd their locatio
n usi
ng the four V type block positio
n, a stop pi
n to the auxiliary positio
ni
ng. Due to the small size of compo
ne
nts, the clampi
ng force is
needed. Therefore, the clampi
ng mea
ns are ma
nually clampi
ng, clampi
ng it simple, more co
nve
nie
nt for the desig
n of i
nstitutio
ns, to meet the requireme
nts of clampi
ng. Key Words：I
ntermed shaft supporti
ng bracket；Processi
ng；Special fixture； 目录 1绪论0 1.1综述0 1.2机床夹具的现状及发展方向0 1.2.1国内外机床夹具的现状0 1.2.2现代机床夹具的发展方向0 1.3课题背景0 1.4本文主要研究工作4 2零件的分析0 2.1零件作用0 2.2零件的工艺分析0 3工艺规程设计0 3.1确定毛坯的制造形式0 3.2基面的选择0 3.3制定工艺路线0 3.4机械加工余量，工艺尺寸及毛坯尺寸的确定0 3.5确定切削用量及基本工时0 3.6小结0 4钻床夹具设计0 4.1机床夹具组成0 4.2机床夹具作用0 4.3机床夹具分类0 4.4夹具设计步骤0 4.5钻床夹具设计过程0 4.5.1定位基准的选择0 4.5.2夹具设计0 5铣床夹具设计0 5.1铣床夹具的设计特点0 5.2夹具装夹工件的特点0 5.3铣床夹具的安装0 5.4铣床夹具的对刀位置0 5.5铣刀分类0 5.6定位方案0 5.6.1定位误差计算0 5.6.2夹紧方案0 6.设计总结错误!未定义书签。 参考文献0 致谢0