机械5

摘要 近数控技术是现代制造技术的基础，它的广泛应用使普通机械被数控机械所代替，使全球制造业发生了根本变化。数控技术的水准、拥有和普及程度已经成为衡量一个国家综合国力和工业现代化水平的重要标志之一。 本次设计任务是阶梯轴的工艺设计与程序编制，使用CAD制图软件将零件的二维图形画出来。接着对零件结构、精度、技术要求进行分析。设计加工零件的数控工艺方案，选择毛坯、刀具、机床，以及合理的切削参数等。选择出最佳的加工工艺方案，然后对零件的数控加工程序进行编制，完成本次设计。 关键词:阶梯轴；数控技术；加工工艺；程序编制； Abstract Near
numerical co
ntrol tech
nology is the fou
ndatio
n of moder
n ma
nufacturi
ng tech
nology, it iswidely used to make the ordi
nary machi
nery is replaced by CNC machi
nery, so that the global ma
nufacturi
ng i
ndustry has bee
n a fu
ndame
ntal cha
nge. The level of
numerical co
ntrol tech
nology, the degree of ow
nership a
nd popularity has become a measure of a cou
ntry's comprehe
nsive
natio
nal stre
ngth a
nd a
n importa
nt symbol of the level of i
ndustrial moder
nizatio
n. The task of this desig
n is a typical shaft parts processi
ng process desig
n a
nd programmi
ng, use of CAD drawi
ng software parts of the two-dime
nsio
nal graphics drawi
ng out. The
n for structural parts, precisio
n, tech
nical requireme
nts are a
nalyzed. Desig
n a
nd processi
ng compo
ne
nts of the NC process scheme, selectio
n of bla
nk, tools, machi
ne tools, a
nd the reaso
nable cutti
ng parameters. Choose the best processi
ng program, a
nd the parts of the NC machi
ni
ng program is compiled, to complete the desig
n. Keywords: typical shaft;
numerical co
ntrol tech
nology; processi
ng tech
nology; programmi
ng; 目录 摘要I Abstract II 目录III 前言4 1零件的图纸分析5 1.1零件的结构特点分析5 1.2零件的加工难点分析6 1.2确定毛坯6 2零件的工艺规程设计7 2.1表面加工方法的确定7 2.2加工顺序的安排7 2.3定位基准及装夹方式的选择8 2.4制订加工工艺方案9 2.5选择加工设备机床10 2.6选择刀具11 2.7确定切削用量11 2.7.1背吃刀量的确定11 2.7.2切削用量的具体选择12 2.8数控加工工艺卡片拟订13 2.9走刀路线13 3程序编制与模拟仿真18 3.1数控编程18 3.1.1编程原点的确定18 3.1.2程序19 3.2模拟仿真23 3.2.1程序的导入23 3.2.2设置毛坯23 3.2.3设置刀具24 3.2.4对刀和输入刀补24 3.2.5仿真加工24 设计小结28 参考文献29 致谢30