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。 增压活塞杆加工工艺规程及其钻Φ10销孔的夹具设计，包括零件加工的工艺设计、工序设计以及夹具设计三部分。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：增压活塞杆、加工工艺、夹具设计、工艺路线、切削用量 Abstract This desig
n i
nvolves the k
nowledge of machi
ne ma
nufacturi
ng tech
nology a
nd fixture desig
n, metal cutti
ng machi
ne tools, tolera
nce matchi
ng a
nd measureme
nt, etc. Processi
ng procedure for pressurized pisto
n rod a
nd fixture desig
n for drilli
ng pi
nhole 10 i
nclude process desig
n, process desig
n a
nd fixture desig
n of parts processi
ng. 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, the
n desig
n the process route of the parts; the
n calculate the size of the parts i
n each step, the key is to determi
ne the process equipme
nt a
nd cutti
ng parameters of each step; a
nd the
n desig
n the special fixture, select a
nd desig
n the fixture. Each compo
ne
nt, such as positio
ni
ng eleme
nt, clampi
ng eleme
nt, guidi
ng eleme
nt, fixture body a
nd machi
ne tool co
n
necti
ng parts a
nd other compo
ne
nts, calculates the positio
ni
ng error of fixture positio
ni
ng, a
nalyses the ratio
nality a
nd shortcomi
ngs of fixture structure, a
nd pays atte
ntio
n to improveme
nt i
n future desig
n. Keywords: pressurized pisto
n rod, processi
ng tech
nology, fixture desig
n, process route, cutti
ng parameters 目录 摘要I Abstract II 第1章绪论1 1.1机械加工工艺规程的作用1 1.2研究方法及技术路线1 第2章零件工艺的分析3 2.1零件的工艺分析3 2.2确定毛坯的制造形式4 第3章拟定工件的工艺路线6 3.1定位基准的选择6 3.1.1精基准的选择6 3.1.2粗基准的选择6 3.2加工路线的拟定6 3.3选择方案8 第4章确定切削用量及基本工时9 第5章钻床夹具设计27 5.1问题的提出27 5.2定位基准的选择27 5.3定位分析27 5.4切削力及夹紧力计算27 5.5定位误差分析28 结论31 参考文献32