机械5

摘要 这次课程设计内容涵盖了机械加工工艺和机床专用夹具设计、金属切削机床、公差尺寸与机械测量等各个方面的内容。 斜头接耳加工工艺及其钻孔的夹具设计是包括零件加工的工艺设计、加工工序设计及专用夹具设计这三部分。机械加工工艺设计是在机械制造技术等专业课程所学的理论知识上，发挥专业知识解决实际生产问题的一次实践训练。机械制造技术定义：机械的生产过程中，改变生产对象的形状，尺寸，相对位置和性质等使其称为半成品或者成品的工艺过程。以工艺文件的形式确定下来的工艺过程叫做工艺规程。将铸件，锻件毛坯或者钢材经过机械加工的方法，改变它们的形状，尺寸，表面质量，使其称为合格零件的过程，称为机械加工工艺过程。在工艺设计中，要对零件进行了解，了解零件的作用，应用场合，分析它的技术要求，这样可以保证零件的加工质量，还可以提高其生产效率。要研究零件毛培的工艺结构，制定出粗精基准，在设计出对应的加工工艺过程，完成工艺过程卡；然后按照工艺过程卡的要求，测量计算毛培每个工步所需的加工机床设备及其切削用量；然后按照所需加工要求，设计该机床的专用夹具，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；设计的夹具尽量操作方便，加紧稳定，从而改善加工强度来获得更好的经济效益。 关键词：切削用量；定位；误差 ABSTRCT The graduatio
n desig
n co
nte
nt covers the mecha
nical processi
ng tech
nology a
nd machi
ne tool fixture desig
n, metal cutti
ng machi
ne tool, the size of the tolera
nce a
nd mecha
nical measureme
nts, etc. All aspects of co
nte
nt. Processi
ng tech
nology a
nd its supporti
ng shell drill holes fixture desig
n is i
ncludi
ng part machi
ni
ng process desig
n, process desig
n a
nd special fixture desig
n three partsMachi
ni
ng process desig
n i
n mecha
nical ma
nufacturi
ng tech
nology a
nd other professio
nal course lear
ni
ng theory k
nowledge, play to the professio
nal k
nowledge to solve practical productio
n problems i
n a practical trai
ni
ng. Machi
nery ma
nufacturi
ng tech
nology defi
nitio
n: the productio
n process, the productio
n object to cha
nge shape, size, positio
n a
nd
nature make it as the processes of semi-fi
nished products or fi
nished products. I
n the form of process docume
ntatio
n process is called process pla
n
ni
ng has bee
n fixed. Casti
ngs, forgi
ng bla
nk or steel after mecha
nical processi
ng method, to cha
nge their shape, size, surface quality, which is called the qualified parts process, referred to as the machi
ni
ng process.I
n process desig
n, wa
nt to k
now of parts, explore the effects of compo
ne
nts, applicatio
ns, a
nd to a
nalyze its tech
nical requireme
nts, so that we ca
n e
nsure parts processi
ng quality, also ca
n improve the productio
n efficie
ncy.Must study parts mao pei process structures, develop coarse fi
ne be
nchmark, duri
ng the process, desig
ned the correspo
ndi
ng processi
ng tech
nology to complete the process cards; The
n, accordi
ng to the requireme
nts of process card measureme
nt calculatio
n mao pei required of each machi
ne tool equipme
nt a
nd cutti
ng parameter;Required processi
ng requireme
nts, a
nd the
n accordi
ng to the special fixture desig
n of the machi
ne tool, select each desig
ned fixture compo
ne
nts, such as positio
ni
ng device, clampi
ng device, led compo
ne
nts, specific co
n
nectio
n with machi
ne parts a
nd other parts; Desig
n of fixture is easy to operate, as far as possible to stability, so as to improve the processi
ng stre
ngth to obtai
n better eco
nomic be
nefit. Key words:Cutti
ng parameter;positio
ni
ng;The tolera
nce 目录 摘要IV ABSTRCT IV 目录V 1零件的分析1 1.1零件的作用1 1.2夹具的作用1 1.3零件的工艺分析2 1.3.1零件工艺流程概念2 1.3.2斜头接耳工艺分析3 2工艺规程设计4 2.1机械加工工艺规程内容4 2.2确定毛坯的制作形式4 2.2.1毛坯的设计5 2.3.2精基准的选择6 2.4制定工艺路线6 2.5机械加工余量、工序尺寸及毛坯尺寸的确定7 2.6确定切削用量及基本工时8 3夹具设计15 3.1问题的提出15 3.2定位基准的选择15 3.3切削力及夹紧力计算16 3.4定位误差分析16 3.5夹具和夹具设计及操作简要说明17 致谢19 参考文献20