机械5

机床尾座体加工工艺及铣2×2槽夹具设计 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。 本次设计的题目是机床尾座体加工工艺及铣2×2槽夹具设计，研究的对象是尾座体。研究的尾座体安装在机床导轨上，为机床实现纵向和横向进给提供保障。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。经过分析决定设计铣2×2槽铣床专用夹具，选择X6132卧式铣床，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：机床尾座体、工艺、铣2×2槽、铣床、夹具 ABSTRACT Machi
ne tool fixture desig
n is a compo
ne
nt part of moder
n machi
ne parts ma
nufacturi
ng a
nd processi
ng. Machi
ne tools are divided i
nto differe
nt types accordi
ng to their types, so as 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 machi
ne tool tailstock processi
ng tech
nology a
nd milli
ng 2x 2 slot fixture desig
n. The object of study is tailstock. The tailstock is i
nstalled o
n the guide rail of machi
ne tool to provide lo
ngitudi
nal a
nd lateral feed for machi
ne tools. The desig
n i
ncludes the process desig
n a
nd the fixture desig
n. After readi
ng the parts diagram,we 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, the special fixture for milli
ng 2x 2 groove milli
ng machi
ne is desig
ned, the X6132 horizo
ntal milli
ng machi
ne is selected, the positio
ni
ng a
nd clampi
ng scheme is determi
ned, the positio
ni
ng a
nd clampi
ng eleme
nts are selected, a
nd the desig
n clip is specific. Keywords: machi
ne tool tailstock, process, milli
ng 2* 2 slot, milli
ng machi
ne a
nd fixture. 目录 摘要I ABSTRACT III 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 2.2.3零件的形位公差分析6 2.3零件的作用6 2.4零件材料的确定6 2.5确定零件的生产类型6 2.6确定零件的毛坯类型7 第3章拟定零件工艺路线8 3.1选择定位基准8 3.2确定各表面的加工方案8 3.3工艺路线的选择、比较与确定9 3.4确定机床、夹具、刀具及量具11 3.5确定零件加工余量11 3.6计算切削用量及时间定额13 第4章专用夹具的设计28 4.1选择定位方案和定位元件28 4.1.1选择定位方案28 4.1.2选择定位元件28 4.2选择夹紧方案和夹紧元件29 4.2.1选择夹紧方案29 4.2.2选择夹紧元件30 4.3夹具体的设计30 4.4选择导向装置—对刀块31 4.5计算铣削力31 4.6计算夹紧力31 4.7分析定位误差32 结论33 致谢34 参考文献35