机械5

支架零件的工艺规程及钻夹具设计 摘要 本次设计课题是支架零件的机械加工工艺及夹具设计，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。 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：支架；工序；工艺规程；夹具 Abstract This desig
n topic is the machi
ni
ng process a
nd fixture desig
n co
nte
nts of bracket related to mecha
nical ma
nufacturi
ng process a
nd fixture desig
n, metal cutti
ng machi
ne tool, tolera
nce a
nd measureme
nt a
nd other aspects of k
nowledge. 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
ndworker step that process
need this of process towa
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 ofworki
ng fi
nally. Keyword: Bracket；The Process；Process Specificatio
n；Fixture 目录 摘要2 Abstract 3 引言6 1绪论7 2工艺设计8 2.1机械加工工艺过程基本知识8 2.2机械加工工艺设计的内容9 2.3零件分析10 2.4零件毛坯分析11 2.5工艺过程设计12 2.6工艺路线的拟定14 2.7切削计算过程17 2.8本章小结22 3钻孔夹具设计23 3.1夹具的基本知识23 3.2定位原理及方案分析26 3.3定位元件选择28 3.4夹紧元件的选择29 3.5夹紧力的计算29 3.6误差的计算29 3.7本章小结30 总结32 致谢33 参考文献34