机械5

典型零件的数控加工工艺及编程仿真 摘要 数控技术是技术性极强的工作，尤其在机械加工领域应用最为广泛，所以这要求从业人员具有很高的机械加工工艺知识，数控编程知识和数控操作技能。此次的设计任务是对零件的加工工艺设计与程序编制及加工，利用绘图软件AutoCAD将零件的二维图画出来,用UG软件画出三维图形。 然后是通过应用UG软件、机械设计资料和所学的知识对机械零件进行工艺分析、三维建模、数控加工编程及加工。工艺分析是设计产品重点；三维建模、数控加工编程是UG软件的重点所在，具有操作简单和修改方便等优点；加工是对所设计的产品进行编程仿真加工。 关键词: UG软件,工艺分析,建模,编程,加工 Abstract The
numerical co
ntrol tech
nology is a highly tech
nicalwork, especially i
n the field of mecha
nical processi
ng is the mostwidely used, so it requires employeeswith high k
nowledge of mecha
nical processi
ng tech
nology, CNC programmi
ng k
nowledge a
nd skills. The desig
n task is the machi
ni
ng process desig
n a
nd programmi
ng a
nd processi
ng, the drawi
ng software AutoCADwill be out of the picture parts of the two-dime
nsio
nal, the
n use the UG software to draw three-dime
nsio
nal graphics. The
n through the applicatio
n of UG software, mecha
nical desig
n data a
nd k
nowledge of mecha
nical parts for process a
nalysis, 3D modeli
ng, NC programmi
ng a
nd machi
ni
ng. Process a
nalysis is focus o
n product desig
n; 3D modeli
ng, NC programmi
ng is the key of UG software, has the adva
ntages of simple operatio
n a
nd easy modificatio
n; processi
ng is to detect the desig
n of products. Keywords: UG software, process a
nalysis, modeli
ng, programmi
ng, processi
ng 目录 摘要I Abstract II 第一章绪论1 1.1数控加工技术国内外发展现状1 1.1.1我国数控技术发展现状1 1.1.2与国外的差距1 1.2数控加工技术国内外现状2 第二章基于UG的建模造型3 2.1 UG软件功能简介3 2.2基于UG的典型零件的参数化造型4 2.2.1.新建文件4 2.2.2建立上表面外轮廓特征5 2.2.3建立上表面内轮廓特征7 2.2.4下表面特征的建立8 第三章零件的数控加工工艺11 3.1零件的结构特点分析11 3.2确定毛坯11 3.3定位基准的选择和工艺路线的安排11 3.3.1定位基准11 3.3.2工艺路线的安排12 3.4夹具的选择12 3.5刀具的选择13 3.6切削液选择14 3.7切削用量的选择15 3.8机床的选择18 3.9填写工艺过程卡19 第四章零件的数控程序编制20 4.1编程方法的选择20 4.2软件编程操作20 4.3程序加工与仿真26 总结28 致谢29 参考文献30