机械5

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。 钻床主轴零件的工艺规程及其铣815槽、1032槽的工装夹具设计，包括钻床主轴的工艺设计、工序设计以及专用夹具设计三部分。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：钻床主轴、切削用量、夹紧、定位元件。 Abstract The desig
n i
nvolves mecha
nical ma
nufacturi
ng tech
nology a
nd machi
ne tool fixture desig
n, metal cutti
ng machi
ne tools, tolera
nce a
nd measureme
nt a
nd other aspects of k
nowledge. The tech
nical specificatio
n for the spi
ndle parts of the drilli
ng machi
ne a
nd the desig
n of the fixture for the 815 a
nd 1032 grooves of the milli
ng machi
ne, i
ncludi
ng the process desig
n of the spi
ndle of the drilli
ng machi
ne, the process desig
n a
nd the desig
n of the special fixture, are three parts. I
n the process desig
n, the parts are a
nalyzed first, the process of the parts is redesig
ned a
nd the structure of the bla
nk is redesig
ned. The process datum of the parts is selected a
nd the process route of the part is desig
ned. The
n the size calculatio
n of theworki
ng procedure of the parts is calculated, the key is to determi
ne the process equipme
nt a
nd the cutti
ng amou
nt of thevariousworki
ng order; the
n, the key is to determi
ne the amou
nt of the process equipme
nt a
nd the cutti
ng amou
nt. The desig
n of the special fixture is carried out, a
nd the compo
ne
nts of the fixture are desig
ned, such as the positio
ni
ng eleme
nt, the clampi
ng eleme
nt, the guidi
ng eleme
nt, the co
n
necti
ng partswith the machi
ne tool a
nd the other parts. The positio
ni
ng error is calculatedwhe
n the fixture is positio
ned, a
nd the ratio
nality a
nd i
nadequacies of the fixture structure are a
nalyzed, a
nd the desig
n is i
njected i
n the future. It is i
nte
nded to be improved. Keywords : Drill spi
ndle, cutti
ng amou
nt, clampi
ng a
nd positio
ni
ng eleme
nts. 目录 摘要I Abstract II 第一章绪论2 1.1引言2 1.2机械加工工艺规程的作用2 1.3研究方法及技术路线3 第2章工艺规程设计4 2.1毛坯的制造形式4 2.2钻床主轴分析4 2.3基面的选择4 2.3.1粗基准的选择原则4 2.3.2精基准选择的原则5 2.4制定工艺路线5 2.5确定各工序的加工余量6 2.6确定切削用量及基本工时7 第3章钻床主轴铣床夹具22 3.1问题的提出22 3.2定位基准的选择22 3.3切削力及夹紧力计算22 3.4定位误差分析24 3.5夹具设计及操作简要说明25 致谢26 参考文献27