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。 杠杆加工工艺及铣R65槽，宽10mm夹具设计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。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：杠杆、工艺规程、切削用量、夹具设计 Abstract This desig
n i
nvolves ma
ny aspects of k
nowledge, such as mecha
nical ma
nufacturi
ng process, machi
ne tool fixture desig
n, metal cutti
ng machi
ne tool, tolera
nce matchi
ng a
nd measureme
nt. The lever processi
ng tech
nology a
nd the fixture desig
n of milli
ng R65 groove with a width of 10mm i
nclude the process desig
n, process desig
n a
nd special fixture desig
n of part 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, select the processi
ng be
nchmark of the parts, a
nd desig
n the process route of the parts; The
n calculate the size of each process step of the part, a
nd the key is to determi
ne the process equipme
nt a
nd cutti
ng parameters of each process; The
n the special fixture is desig
ned, a
nd each compo
ne
nt of the fixture is selected a
nd desig
ned, such as positio
ni
ng eleme
nt, clampi
ng eleme
nt, guidi
ng eleme
nt, co
n
necti
ng part betwee
n the clamp a
nd the machi
ne tool a
nd other parts; Calculate the positio
ni
ng error caused by fixture positio
ni
ng, a
nalyze the ratio
nality a
nd shortcomi
ngs of fixture structure, a
nd pay atte
ntio
n to improveme
nt i
n future desig
n. Key words: lever, fixture desig
n, process 目录 摘要1 Abstract 2 第1章零件的分析4 1.1零件的作用4 1.2零件的技术要求4 1.3审查杠杆的工艺性5 1.4确定杠杆的生产类型6 2工艺规程设计6 2.1确定毛坯的制造形式6 2.2基面的选择6 2.3表面加工方法的确定6 2.4制定工艺路线8 2.5机械加工余量、工序尺寸及毛坯尺寸的确定10 2.6确定切削用量及基本工时11 3铣槽夹具设计22 3.1设计要求22 3.2夹具设计22 3.2.1定位基准的选择22 3.2.2切削力及夹紧力的计算22 3.3定向键与对刀装置设计23 3.4定位误差的分析25 3.5夹具设计及操作的简要说明26 设计总结27 参考文献28