磁盘驱动臂零件加工工艺与夹具设计 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。 磁盘驱动臂及其钻Φ2.7孔是包括零件加工的工艺设计、工序设计以及专用夹具的设计三部分。磁盘驱动臂属于异性支架类零件，针对其在加工中却会因其材质较软.形状不规则、体积较孝结构复杂、要求精度高等因素而难以装夫的问题。采用CAD软件设计出生产中必须出能够快速装夫的专用夫具并进行分析，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：磁盘驱动臂；工艺；专用夹具；切削用量，夹紧，定位，误差。 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. The disk drive arm a
nd its drilli
ng hole 2.7 are composed of three parts: process desig
n, process desig
n a
nd special fixture desig
n. Disk drive arm belo
ngs to heterosexual bracket parts, but it is difficult to i
nstall because of its soft material, irregular shape, smallvolume, complex structure a
nd high precisio
n. I
n the process desig
n, it is
necessary to desig
n a
nd a
nalyze the special fitti
ngs that ca
n quickly assemble theworker by usi
ng CAD software. First, the parts should be a
nalyzed, the structure of the bla
nk should be desig
ned after u
ndersta
ndi
ng the process of the parts, a
nd the processi
ng be
nchmark of the parts should be selected to desig
n the tech
nological route of the parts. The
n, the dime
nsio
n calculatio
n of thework steps of the parts should be carried out, a
nd the key is to determi
ne thevarious processes. Processi
ng equipme
nt a
nd cutti
ng parameters are seque
nced; the
n the desig
n of special fixture is carried out, a
nd each compo
ne
nt of fixture is selected, such as positio
ni
ng eleme
nt, clampi
ng eleme
nt, guidi
ng eleme
nt, fixture body a
nd machi
ne tool co
n
nectio
n compo
ne
nt 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 improveme
nt is paid atte
ntio
n to i
n future desig
n.。 Keywords: disk drive arm; tech
nology; special fixture; cutti
ng parameters, clampi
ng, positio
ni
ng, error. 目录 摘要1 Abstract 2 第1章绪论4 1.1课题背景4 1.2目的5 1.3选题的依据及意义5 1.4夹具的发展趋势5 第2章计算生产纲领、确定生产类型7 2.1生产纲领7 2.2生产效率分析7 2.3生产类型7 第3章零件的分析9 3.1零件的作用9 3.2零件的工艺分析9 第4章工艺规程设计11 4.1毛坯的制造形式11 4.2选择定位基准11 4.3制定工艺路线12 4.4机械加工余量的确定13 4.5选择各工序加工设备及工艺装备13 4.6确定切削用量及基本工时14 第5章钻床夹具设计23 5.1问题提出23 5.2定位机构23 5.3夹紧机构24 5.4机床夹具的总体形式25 5.5绘制夹具零件图26 5.6绘制夹具装配图26 结束语28 谢辞29 参考文献30