机械5

车削装夹夹具设计 【摘要】 本次设计的内容是制定壳体加工工艺及车削装夹夹具设计，具体如下： 1、对零件进行分析，主要是零件作用的分析和工艺分析，通过零件分析可以了解零件的基本情况，而工艺分析可以知道零件的加工表面和加工要求。根据零件图提出的加工要求，确定毛坯的制造形式和尺寸的确定。 2、选择基面，确定加工过程中的粗基准和精基准。根据选好的基准，制订工艺路线，通常制订两种的工艺路线，通过工艺方案的比较与分析，再选择可以使零件的几何形状、尺寸精度等技术要求得到合理的保证的一种工序。根据已经选定的工序路线，确定每一步的切削用量及基本工时，并选择合适的机床和刀具。 3、设计车削装夹夹具。对定位方案及元件，夹紧方案及元件进行确定，然后计算切削力、夹紧力和定位误差的分析等。完成零件及夹具装配体三维实体造型；夹具装配图及非标零件图的绘制等。 关键词：壳体、工艺、车削、夹具 Abstract: The co
nte
nts of this desig
n is to develop shell processi
ng tech
nology a
nd tur
ni
ng fixture fixture desig
n, as follows: 1, the a
nalysis of parts, the mai
n part of the role of the a
nalysis a
nd process a
nalysis, part a
nalysis ca
n u
ndersta
nd the basic co
nditio
ns of the parts, a
nd process a
nalysis ca
n k
now the parts of the machi
ni
ng surface a
nd processi
ng requireme
nts. Accordi
ng to the part drawi
ngs proposed processi
ng requireme
nts, to determi
ne the ma
nufacturi
ng form a
nd size of the bla
nk to determi
ne. 2, select the base surface to determi
ne the rough process a
nd precisio
n be
nchmarks. Accordi
ng to the selected be
nchmark, the developme
nt of process routes, usually formulated two ki
nds of process routes, through the process of compariso
n a
nd a
nalysis, a
nd the
n select the geometry of the parts, dime
nsio
nal accuracy a
nd other tech
nical requireme
nts to be a reaso
nable assura
nce of a process. Accordi
ng to the selected process route, determi
ne the amou
nt of each step of cutti
ng a
nd basicworki
ng hours, a
nd select the appropriate machi
ne tools a
nd tools. 3, desig
n tur
ni
ng clamp fixture. The positio
ni
ng program a
nd compo
ne
nts, clampi
ng programs a
nd compo
ne
nts to determi
ne, a
nd the
n calculate the cutti
ng force, clampi
ng force a
nd positio
ni
ng error a
nalysis. Complete parts a
nd fixture assembly three-dime
nsio
nal solid modeli
ng; fixture assembly drawi
ngs a
nd
no
n-sta
ndard parts drawi
ng a
nd so o
n. Keywords: shell, tech
nology, tur
ni
ng, fixtures 目录 1零件分析和毛坯设计1 1.1零件工艺分析及生产类型确定1 1.1.1零件的组成表面分析2 1.1.2零件的技术要求分析2 1.1.3零件的形位公差分析2 1.1.4零件生产类型的确定3 1.2毛坯类型及毛坯图设计3 2机械加工工艺规程设计5 2.1零件基准的选择5 2.2零件加工工艺方案的拟定5 2.3零件加工设备及装备的选择6 2.4机械加工余量的确定6 2.5加工工序切削用量及时间定额的计算8 3专用夹具设计23 3.1工序内容及加工要求23 3.2定位基准23 3.3夹具结构设计及工作流程23 3.4设计定位方案应满足的要求23 3.5定位方案的确定23 3.6定位元件的确定24 3.7夹紧方案的确定24 3.8夹紧元件的确定25 3.9夹具体的设计26 3.10计算切削力27 3.11计算夹紧力28 3.12定位误差的分析29 结束语30 谢辞31 参考文献32