机械5

凸轮轴的数控加工工艺设计 摘要 数控加工需要输入加工程序，当零件过于复杂时，程序会很多，手动输入程序会很繁杂，而用UG进行编程加工，再自动生成程序，可减少不必要的时间浪费，也可以了解加工过程中的易错之处，而UG就提供一个数控加工模拟与仿真的平台。UG具有实体造型、曲面造型、工程图的生成和拆模等功能。通过UG三维造型、编程仿真加工可以比手动绘图、手动编程来的简便、也可以提早发现问题、降低错误几率。本主要利用UG软件对凸轮轴零件进行了三维造型，同时制定了加工工艺路线，并应用UG软件对关键数控加工工序的仿真加工。 关键词：UG三维造型；凸轮轴；数控工艺；加工仿真 Abstract Nc machi
ni
ng process
needed for i
nput,whe
n parts are too complex, the programwill be a lot of, ma
nually e
nter the programwill bevery complex, a
nd programmi
ng process, usi
ng UG to automatically ge
nerate the program agai
n, ca
n reduce the u
n
necessarywaste of time, ca
n also u
ndersta
nd the easywro
ng place, i
n the process of machi
ni
ng a
nd UG is to provide a
numerical co
ntrol processi
ng simulatio
n a
nd the simulatio
n platform.UG is the ge
neratio
n of e
ntity modeli
ng, surface modeli
ng, e
ngi
neeri
ng drawi
ng a
nd mold, a
nd other fu
nctio
ns.By UG three-dime
nsio
nal modeli
ng, programmi
ng, simulatio
n process ca
n be easier tha
n ma
nual drawi
ng, ma
nual programmi
ng, also ca
n fi
nd problems early, to reduce the error probability.This thesis mai
nly by usi
ng UG software CAM shaft parts for the 3 d modelli
ng, formulated the processi
ng craft route at the same time, a
nd used UG software for the key processi
ng of
nc machi
ni
ng process simulatio
n. Keywords: UG three-dime
nsio
nal modeli
ng;The camshaft.Numerical co
ntrol tech
nology;Machi
ni
ng simulatio
n 目录 摘要1 Abstract 2 前言3 第一章绪论4 1.1数控加工技术的发展趋势4 1.2 UG软件在行业中的应用4 1.2.1 CAD/CAM的国内外发展4 1.2.2 UG的优点5 第二章基于UG的三维造型设计6 2.1凸轮轴结构形状6 2.2凸轮轴三维造型设计7 2.2.1进入初始界面7 2.2.2新建模型7 2.2.3绘制步骤8 第三章零件的工艺规程设计12 3.1毛坯的选择12 3.2定位基准的选择12 3.3装夹方式的选择12 3.4工艺路线的确定12 3.5机床的选择14 3.6刀具的选择15 3.7冷却液的选择16 3.8切削用量的选取16 3.9切削用量的计算17 3.10加工工序卡片19 第四章数控编程与仿真加工21 4.1手动编程程序21 4.2自动编程与仿真25 结论29 致谢30 参考文献31