机械5

连杆孔加工工艺与夹具设计 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。机床夹具依据其类型不同分成不同种类，以适应不同复杂程度的零件和不同的加工工序和工步等。所以，对其进行研究有意义。 本次设计的题目是连杆孔加工工艺与夹具设计，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。经过分析决定设计右侧M8通孔钻床专用夹具，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。 关键词：连杆、加工工艺、夹具、右侧M8通孔、Z3040摇臂钻床 ABSTRACT Machi
ne tool fixture desig
n is a
n i
ntegral part of moder
n machi
nery parts ma
nufacturi
ng a
nd processi
ng. Machi
ne tools are divided i
nto differe
nt types accordi
ng to their differe
nt types to adapt to differe
nt complex parts a
nd differe
nt processi
ng procedures a
ndwork steps. Therefore, it is of great sig
nifica
nce to study it. The topic of this desig
n is the processi
ng tech
nology a
nd fixture desig
n of co
n
necti
ng rod hole. The object of study is co
n
necti
ng rod. The co
n
necti
ng rod is o
ne of the mai
n tra
nsmissio
n parts o
n the machi
ne, a
nd it is the premise for the
normal operatio
n of the machi
ne or mecha
nism. I
n thework, it bears the cha
nge load of the play. The desig
n i
ncludes the process desig
n a
nd the fixture desig
n. After the graphic readi
ng of the parts, determi
ne the productio
n type of the parts, compile the process route, determi
ne the spi
ndle speed a
nd cutti
ngvolume, a
nd fill i
n the process card. Complete the drawi
ng of part drawi
ng a
nd bla
nk drawi
ng. After a
nalysis,we decided to desig
n the right M8 drilli
ng machi
ne special fixture a
nd adopt Z3040 radial drilli
ng machi
ne. Determi
ne the positio
ni
ng a
nd clampi
ng scheme; select positio
ni
ng a
nd clampi
ng eleme
nts; desig
n clip specific. Keywords co
n
necti
ng rod, processi
ng tech
nology, jig, right M8 through hole, Z3040 radial drilli
ng machi
ne 目录 摘要I ABSTRACT II 第1章绪论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2 1.4机床夹具在机械加工中的作用3 1.5机床夹具的发展趋势3 第2章零件的工艺性分析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 第3章拟定零件工艺路线8 3.1选择定位基准8 3.2工艺过程设计中应考虑的主要问题8 3.2.1加工方法选择的原则8 3.2.2加工阶段的划分9 3.2.3工序的合理组合10 3.3工艺路线的选择、比较与确定10 3.4确定机床、夹具、刀具及量具12 3.5确定零件加工余量12 3.6计算切削用量及时间定额13 第4章专用夹具的设计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21 4.2.1选择夹紧方案22 4.2.2选择夹紧元件23 4.3夹具体的设计23 4.4选择导向装置—钻套24 4.5计算钻削力24 4.6计算夹紧力24 4.7分析定位误差25 结论26 致谢27 参考文献28