机械5

JZA02-4铲板油缸活塞的加工工艺及夹具设计 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。 活塞的加工工艺规程和铣宽70两侧面的工装夹具设计，包括零件加工的工艺设计、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：活塞;加工工艺;夹具设计;工序;工艺路线;切削用量 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. Processi
ng procedure of pisto
n a
nd desig
n of fixturewith two sides of milli
ngwidth 70 i
nclude process desig
n, process desig
n a
nd special fixture desig
n. I
n the process desig
n,we must 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 desig
n of special fixture is carried out, a
nd each compo
ne
nt of fixture is selected, such as positio
ni
ng compo
ne
nt, clampi
ng compo
ne
nt, guidi
ng compo
ne
nt, co
n
necti
ng compo
ne
nt betwee
n fixture a
nd machi
ne tool, a
nd other compo
ne
nts; the positio
ni
ng error caused by fixture positio
ni
ng is calculated, the ratio
nality a
nd shortcomi
ngs of fixture structure are a
nalyzed, a
nd the
notes i
n future desig
n are give
n. It is i
nte
nded to be improved. Keywords: pisto
n; machi
ni
ng process; fixture desig
n; process; process route; cutti
ng parameter 目录 摘要I Abstract II 第1章活塞的工艺分析1 1.1活塞的分析1 1.2毛坯的选择1 1.3基准的选择1 第2章工艺规程设计3 2.1加工余量的确定3 确定毛坯直径3 2.2制定工艺路线4 2.3工时的计算4 第3章铣床夹具设计33 3.1工件自由度分析33 3.2定位误差计算33 3.3夹紧力的确定34 3.4夹具整体结构说明35 总结37 参考文献38