机械5

CA6140车床手柄座零件的机械加工工艺规程及钻Φ14H7孔夹具设计 摘要 手柄座是机床上重要的零件之一，其位置处于光杆和手柄连接的地方，在力和力矩的作用下，完成机床相应的操作。因此，对其进行设计和研究是非常意义。本次设计以手柄座为研究对象，对其进行了工艺分析及专用夹具设计。 工艺分析的主要内容有：零件的结构分析、加工要求分析，加工工艺路线的制定，工序卡及工艺卡的编写，零件图及毛坯图的绘制等。 通过与指导老师协商设计Φ14H7孔钻床专用夹具。通过对零件图的分析，该孔的加工精度要求以及作用非常重要。夹具设计内容有定位方案及装置的设计；夹紧方案及装置的设计；夹具体的设计；钻削力的计算以及夹紧力的校核与验算等等。最后，完成了夹具装配图和夹具体等所有非标零件图的绘制。 关键词：手柄座、工艺分析、专用夹具、Φ14H7孔、钻床 ABSTRACT The ha
ndle base is o
ne of the importa
nt parts of the machi
ne tool. Its positio
n is at the placewhere the polished rod a
nd the ha
ndle are co
n
nected. U
nder the actio
n of force a
nd torque, the correspo
ndi
ng operatio
n of the machi
ne tool is completed. Therefore, it isvery mea
ni
ngful to desig
n a
nd research o
n it. The desig
n of the ha
ndle seat for the study, its process a
nalysis a
nd desig
n of special fixtures. Process a
nalysis of the mai
n eleme
nts are structural a
nalysis of parts, processi
ng requireme
nts a
nalysis, the developme
nt of processi
ng routes, process cards a
nd process card preparatio
n, parts drawi
ngs a
nd drawi
ng of rough drawi
ngs. Through co
nsultatio
nwith the i
nstructor desig
nedΦ14H7 hole drilli
ng machi
ne fixture. Through the a
nalysis of the part drawi
ng, the machi
ni
ng accuracy requireme
nt a
nd the fu
nctio
n of the hole arevery importa
nt. Fixture desig
n co
nte
nt positio
ni
ng programs a
nd device desig
n; clampi
ng program a
nd device desig
n; folder specific desig
n; calculatio
n of drilli
ng force a
nd the clampi
ng force of the check a
nd checki
ng a
nd so o
n. At last, the drawi
ng of all
no
n-sta
ndard parts such as fixture assembly drawi
ng a
nd clamp body is completed. Keywords ha
ndle seat, process a
nalysis, special fixture,Φ14H7 hole, drilli
ng machi
ne 目录 摘要I ABSTRACT II 第一章引言1 1.1机械加工工艺规程概述1 1.2机械加工艺规程的作用1 1.3工艺规程制订的原则1 第二章零件的分析3 2.1零件的作用分析3 2.2零件的表面组成分析3 2.3零件的加工要求分析4 2.4零件的形位公差分析4 第三章零件的工艺规程设计5 3.1确定零件的材料及生产类型5 3.2确定零件的加工基准5 3.3确定零件的制造形式5 3.4制定零件的工艺路线5 3.5确定零件的加工机床、夹具、刀具及量具6 3.6确定零件的加工余量7 3.7确定零件的切削用量及基本工时8 第四章钻Ф14H7孔专用夹具设计23 4.1确定零件的定位方案及定位元件23 4.1.1确定零件的定位方案23 4.1.2确定零件的定位元件23 4.2确定零件的夹紧方案及夹紧元件24 4.2.1确定零件的夹紧方案24 4.2.2确定零件的夹紧元件24 4.3确定夹具体24 4.4导向方案的选择25 4.4.1钻模的选择25 4.4.2钻套的选择25 4.5计算钻削力和夹紧力28 4.5.1计算钻削力28 4.5.2计算夹紧力28 4.6计算定位误差29 结论30 致谢31 参考文献32