机械5

KCSJ-02套筒座的钻顶面2×M6螺纹孔专用夹具设计及机械加工工艺规程装备 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。 套筒座零件的工艺设计、工序设计以及钻顶面2×M6螺纹孔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：套筒座；工艺；工序；专用夹具；工艺路线 Abstract This 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 fit a
nd measureme
nt a
nd other aspects of k
nowledge. The process desig
n a
nd process desig
n of sleeve parts, aswell as the three parts of the desig
n of the special drill jig for drilli
ng 2 M6 holes o
n the top surface. 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: sleeve seat; tech
nology; process; special fixture; process route 目录 摘要1 Abstract 2 一零件的分析4 1.1分析零件的作用及技术要求4 1.2零件的工艺分析4 分析零件的材质、热处理及机械加工工艺性4 2选择毛坯的制造方式、初步确定毛坯形状6 3机械加工工艺规程设计7 3.1选择定位基准7 3.2工件表面加工方法的选择8 3.3制定加工工艺路线8 3.4.1支承孔的工序尺寸及公差计算9 3.4.2底面A的工序尺寸及公差计算10 3.4.3一对工艺孔的工序尺寸及公差计算12 3.4.4其他加工面的加工余量的确定13 3.5确定切削用量、时间定额13 确定切削用量、时间定额15 4.专用夹具设计28 4.1.确定设计方案28 4.2.选择定位方式及元件28 4.3.对刀导向元件的确定28 4.4.夹紧机构的确定29 4.5.切削力的计算与夹紧力的分析29 4.6.定位误差分析29 4.7.夹具设计及操作的简述30 5.小结30 6.总结31 7.参考文献31 8.致谢32