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摘要 在零件的数控加工过程中，零件的数控加工工艺分析和工艺设计至关重要。无论是手工编程还是自动编程，在加工前都要对所加工零件进行工艺分析，制定加工方案，选择加工设备、夹具、刀具、量具、确定切削用量、安排加工顺序、制定走刀路线等。在编程过程中，还要对一些工艺问题（如工件的装夹、对刀、换刀、刀具补偿等）做相应处理。如果在加工零件之前不做这一系列的准备工作，很难加工出符合标准的零件，因此程序编制中的工艺分析和工艺设计是一项十分重要的工作。 轴在现实生活中应用很广泛，本设计的零件为椭圆曲面车削四件套数控加工设计，它属于轴类零件，本文根据该零件的图纸及技术要求，对该零件进行了详细的数控加工工艺分析，根据分析的结果，确定了该零件的加工方法、装夹方式、定位基准、使用刀具、加工顺序安排、工步划分，走刀路线和切削用量等，并编制了零件的数控加工工艺卡片、数控加工工序卡片和刀具卡片，最后，采用手工编程编制了该零件的数控加工程序。 关键词：数控加工；轴类配合件；加工工序；加工程序 Abstract I
n the process of NC machi
ni
ng, the a
nalysis a
nd desig
n of NC machi
ni
ng process arevery importa
nt. Whether it is ma
nual or automatic programmi
ng, the processi
ng parts should be processed before the process a
nalysis, desig
n a processi
ng pla
n, choose processi
ng equipme
nt, fixtures, tools, measuri
ng tools, determi
ne the amou
nt of cutti
ng, arra
nge the order of processi
ng, make the path of the k
nife. I
n the programmi
ng process, some process problems(such as the assembly ofworkpiece, k
nife, cha
nge k
nife, tool compe
nsatio
n, etc.) should be dealtwith accordi
ngly. If this series of preparatorywork is
not do
ne before processi
ng the parts, it is difficult to produce the parts that meet the sta
ndard, so process a
nalysis a
nd desig
n i
n programmi
ng isvery importa
nt. I
n this paper, accordi
ng to the drawi
ng a
nd tech
nical requireme
nts of the part, the detailed
numerical co
ntrol machi
ni
ng process a
nalysis of the part is carried out, based o
n the result of the a
nalysis, a
nd the desig
n of the part is determi
ned. Keywords:NC machi
ni
ng; Axial type fitti
ng; Processi
ng processes; Process 目录 摘要I Abstract II 绪论1 1零件介绍2 2加工工艺方案分析6 2.1件1定位基准的选择6 2.2件2定位基准的选择7 2.3件3定位基准的选择8 2.4件4定位基准的选择10 3加工工艺方案分析13 3.1加工设备的选择13 3.2刀具的选择14 3.3量具的选择15 3.4确定加工方案15 4数控加工工艺卡片的拟定21 5零件的三维建模22 5.1 Mastercam软件简介22 5.2零件三维造型设计23 6仿真加工29 6.1刀路设计29 6.2配合件1仿真加工41 6.3配合件2仿真加工42 6.4配合件3仿真加工43 6.5配合件4仿真加工44 6.6后处理45 总结46 致谢47 参考文献48