摘要 数控车床是现代加工车间里面重要的加工设备，现代的CAD/CAM都是建立在数控技术之上的。现代数控加工技术知识是现代机械专业学生必需掌握的。在数控加工过程中，要考虑到零件加工工艺路线的安排、加工机床型号的选择、切削刀具的选择、零件加工的定位装夹及数控程序的编制等一系列因素的影响。所涉及到的知识面非常广阔，基本将我们在大学三年里所学知识综合运用起来了所以通过这次设计不仅是一次对我们大学三年来的知识的运用，也是对我们的考验。 本次设计内容为轴类零件数控加工工艺及编程加工。具体介绍了数控车床加工的特点、加工工艺分析以及数控编程加工过程，以及夹具的确定等等。 关键词：数控车床；数控编程；数控加工工艺 Abstract The importa
nt statusof CNC lathetech
nologyi
n the moder
nmecha
nical ma
nufacturi
ng i
ndustrya
nd great be
nefits,have demo
nstrated theirstrategicrole i
n
natio
nal i
nfrastructure i
n the i
ndustrial moder
nizatio
ni
n productio
n,a
nd has automatio
n,flexible,i
ntegratedproductio
n of traditio
nalmachi
nery ma
nufacturi
ngi
ndustry.Wide applicatio
n of CNClathe,brought the revolutio
nary cha
nge for themachi
neryma
nufacturi
ngi
ndustry structure,productvariety a
nd quality a
nd productio
n methodsC lathe ismoder
n processi
ng pla
nti
nside a
n importa
ntprocessi
ng equipme
nt,moder
n CAD/CAMis basedo
n tech
nology of
numerical co
ntrol.Tech
nical k
nowledge to master moder
nCNC machi
ni
ngis a
n absolutely
necessary part of moder
nmachi
nery specializedi
nside.I
nNC machi
ni
ng process,from thequalified partsdesig
ndrawi
ngstofi
nished parts.Should
not o
nly co
nsider theCNC programmi
ng,but also co
nsider thepositio
ni
ngtech
nology ofmachi
ni
ng partsroute arra
ngeme
nt,machi
netype selectio
n,cutti
ng tool selectio
n,machi
ni
ngeffectsof clampi
ngof a series of factors such as.At the begi
n
ni
ng ofprogrammi
ngbefore,must carry o
n thea
nalysis of NC machi
ni
ng tech
nologywiththedesig
n drawi
ngs a
nd tech
nicalrequireme
nts ofparts.Tofi
nallydetermi
ne what iskey tech
nology of parts,whichis the difficultyof NC machi
ni
ngprogrammi
ng,a
ndthe degree of difficulty. Keywords:CNC lathe,NC programmi
ng ,The NC machi
ni
ng process 目录 摘要I Abstract II 绪论1 1零件介绍2 1零件CAD图2 1.2零件的工艺分析3 2加工工艺方案分析5 2.1定位基准的选择5 2.2确定加工方案5 2.3加工走刀路线的拟定6 3加工程序的编制9 4.加工准备11 4.1毛坯的确定11 4.2加工设备的选择11 4.3夹具的确定13 4.4刀具的选择14 4.5选择切削用量17 4.5.1背吃刀量的确定17 4.5.2主轴转速的确定17 4.5.3进给量的确定18 4.5.4切削速度的确定18 4.5.5零件切削用量的具体选择18 4.6量具的选择20 5数控加工工艺卡片的拟定21 6.零件的加工23 6.1工件安装23 6.2刀具装夹23 6.3回机床原点24 6.4对刀24 6.5建立工作坐标系25 6.6程序校验26 6.7自动运行26 6.8程序校验26 致谢27 参考文献28 附录A 29