机械5

摘要 机床夹具设计是现代机械零件制造和加工过程中，不能缺少的组成部分。 本次设计的题目是连杆加工工艺规程制定及专用夹具设计，研究的对象是连杆。连杆是机器上主要传动部件之一，是机器或者机构的正常工作的前提。在工作中承受着剧变动载荷。设计内容包含工艺设计和夹具设计。在对零件图解读后，确定零件生产类型，编写工艺路线，确定主轴转速、切削量等，填写工序卡。完成零件图、毛坯图绘制。经过分析决定设计钻左侧Ф8孔钻床专用夹具，采用Z3040摇臂钻床。确定定位、夹紧方案；选择定位、夹紧元件；设计夹具体等。 Abstract Fixture desig
n is a
n i
ndispe
nsable part i
n the ma
nufacturi
ng a
nd processi
ng of moder
n mecha
nical parts. The title of this desig
n is co
n
necti
ng rod ma
nufacturi
ng process rules a
nd special fixture desig
n, the object of study is co
n
necti
ng rod. Co
n
necti
ng rod is o
ne of the mai
n drivi
ng parts o
n the machi
ne,which is the premise of the
normal operatio
n of the machi
ne or mecha
nism. Bear the load of dramatic cha
nge i
n thework. Desig
n co
nte
nt i
ncludes process desig
n a
nd fixture desig
n. After u
nscrambli
ng the part drawi
ng, the productio
n type of the parts is determi
ned, the process route is compiled, the spi
ndle speed a
nd cutti
ng qua
ntity are determi
ned, a
nd theworki
ng procedure card is filled i
n. Complete part drawi
ng a
nd bla
nk drawi
ng. After a
nalysis, it is decided to desig
n the special jig for drilli
ng machi
newith 8 holes o
n the left side of drill, usi
ng Z 3040 rocker arm drilli
ng machi
ne. Determi
ne positio
n, clamp scheme; choose positio
n, clamp Compo
ne
nts; desig
n clip, etc. 目录 1绪论1 1.1机床夹具的概述1 1.2机床夹具的分类1 1.3夹具设计的特点和基本要求2 1.3.1夹具设计的特点2 1.3.2夹具设计的基本要求3 1.4机床夹具在机械加工中的作用3 2零件的工艺性分析5 2.1零件的结构工艺性分析概述5 2.2零件的组成表面、技术要求分析5 2.2.1零件的组成表面分析5 2.2.2零件的技术要求分析5 2.3零件的作用5 2.4零件材料的确定5 2.5确定零件的生产类型6 2.6确定零件的毛坯类型6 3拟定零件工艺路线8 3.1选择定位基准8 3.2工艺路线的选择、比较与确定8 3.3确定机床、夹具、刀具及量具10 3.4确定零件加工余量10 3.5计算切削用量及时间定额11 4钻左侧Ф8孔专用夹具设计21 4.1选择定位方案和定位元件21 4.1.1选择定位方案21 4.1.2选择定位元件21 4.2选择夹紧方案和夹紧元件22 4.2.1选择夹紧方案22 4.2.2选择夹紧元件22 4.3夹具体的设计22 4.4选择导向装置—钻套23 4.5计算钻削力23 4.6计算夹紧力23 4.7分析定位误差24 结论25 致谢26