摘要 本设计涉及到机械制造工艺及机床夹具设计、金属切削机床、公差和测量等方面的知识。 后支架的加工工艺和夹具设计包括三个部分,包括工艺设计、工序设计和专用夹具设计。在设计的过程中应该首先理解的分析部分,工序过程的设计一个毛坯的结构,并选择好零件的加工基准,设计出零件的工艺路线;然后每个切削用量的部分步骤大小计算,是决定工艺的关键设备和切割过程的各种设计参数,然后一个专用夹具,夹具选择各种组件的设计,如定位和夹紧元件连接部分,导向元件,夹具和机床和其他组件,定位误差计算夹具,分析夹具结构的合理性和不足之处,改进和设计。 关键词:工序、工艺、切削参数、夹紧、定位、误差。 ABSTRCT This desig
n relates to the mecha
nical ma
nufacturi
ng tech
nology a
nd machi
ne tool fixture desig
n, metal cutti
ng machi
ne tools, tolera
nces a
nd measureme
nts, a
nd other aspects of k
nowledge. The machi
ni
ng process a
nd fixture desig
n of the base co
nsists of three parts, i
ncludi
ng process desig
n, process desig
n a
nd special fixture desig
n. I
n desig
n process should first u
ndersta
nd the a
nalysis, structure of the process desig
n of a bla
nk, a
nd choose the good parts machi
ni
ng refere
nce to desig
n parts of the process route; the
n calculate the amou
nt of each cutti
ng part of the step size, the decisio
n process of key equipme
nt a
nd cutti
ng process of various desig
n parameters a
nd a special fixture, the fixture selectio
n desig
n of various compo
ne
nts, such as positio
ni
ng a
nd clampi
ng eleme
nts co
n
necti
ng part, compo
ne
nt orie
nted, tools a
nd fixtures a
nd other compo
ne
nts, positio
ni
ng error calculate fixture, fixture structure of ratio
nality a
nd disadva
ntage a
nalysis, improveme
nt a
nd desig
n. Key words: process, process, cutti
ng parameters, clampi
ng, positio
ni
ng, error. 目录 ABSTRCT 3 序言1 一零件的分析2 1.1零件的作用2 1.2零件的精度分析2 1.3零件的工艺分析2 二工艺规程设计4 2.1确定毛坯的制造形式4 2.2机械加工余量的的确定4 2.3毛坯尺寸的确定5 2.4工序余量的确定5 2.5基面的选择6 2.6制定工艺路线7 2.7确定切削用量及基本工时9 三钻孔夹具设计12 3.1钻床的概述12 3.2问题的提出13 3.3定位基准的选择13 3.4定位方案的设计14 3.5夹紧方案的设计15 3.5.1典型夹紧结构15 3.5.2定心夹紧机构15 3.6切削力和夹紧力的计算16 3.7钻模板的选择16 3.8钻套的设计20 3.8定位误差分析24 3.9夹具设计及操作的简要说明25 总结26 致谢28 参考文献29