支架零件的工艺规程及钻M6螺纹孔夹具设计 摘要 本次设计内容涉及了机械制造工艺及机床夹具设计、金属切削机床、公差配合与测量等多方面的知识。 支架加工工艺规程及夹具设计是包括零件加工的工艺设计、工序设计以及专用夹具的设计三部分。在工艺设计中要首先对零件进行分析，了解零件的工艺再设计出毛坯的结构，并选择好零件的加工基准，设计出零件的工艺路线；接着对零件各个工步的工序进行尺寸计算，关键是决定出各个工序的工艺装备及切削用量；然后进行专用夹具的设计，选择设计出夹具的各个组成部件，如定位元件、夹紧元件、引导元件、夹具体与机床的连接部件以及其它部件；计算出夹具定位时产生的定位误差，分析夹具结构的合理性与不足之处，并在以后设计中注意改进。 关键词：工艺、工序、切削用量、夹紧、定位、误差。 Abstract This desig
n co
nte
nt i
nvolves the mecha
nical ma
nufacturi
ng process a
nd fixture desig
n, metal cutti
ng machi
ne, tolera
nce a
nd measureme
nt a
nd other aspects of k
nowledge. The process specificatio
n a
nd fixture desig
n of reducer box i
nclude the process desig
n of parts processi
ng, process desig
n a
nd special fixture desig
n. I
n the process desig
n, we should first a
nalyze the parts, u
ndersta
nd the process of the parts, the
n desig
n the structure of the bla
nk, a
nd select the processi
ng be
nchmark of the parts, a
nd desig
n the process route of the parts; the
n calculate the size of each worki
ng step of the part, the key is to determi
ne the process equipme
nt a
nd cutti
ng amou
nt of each process; the
n, desig
n the special fixture, select a
nd desig
n the fixture The positio
ni
ng error is calculated, the ratio
nality a
nd deficie
ncy of the fixture structure are a
nalyzed, a
nd the improveme
nt i
n the future desig
n is paid atte
ntio
n to. Key words: clampi
ng error, cutti
ng process. 目录 序言1 一零件的分析2 1.1零件的作用2 1.2零件的工艺分析2 二.工艺规程设计3 2.1确定毛坯的制造形式3 2.2基面的选择3 2.3制定工艺路线5 2.4机械加工余量、工序尺寸及毛坯尺寸的确定7 2.5确定切削用量及基本工时8 三夹具设计11 3.1问题的提出11 3.2定位基准的选择11 3.3切削力和夹紧力的计算12 3.4定位误差分析13 3.5夹具设计及操作的简要说明13 总结14 致谢16 参考文献17