机械5

摘要 当今的CAD/CAM都是建立在数控技术之上的。现今数控加工技能常识是今天机械专业学生一定要了解的。在数控加工过程中，目前数控技术所涉及到的知识面非常广阔，渗透到各种行业，比如机械行业，制造业，军事业。差不多将我们在大学生涯所学的所有专业知识综合运用起来。这次设计使我更加熟悉的数控知识，同时使我更加熟练了对CAD以及UG软件的了解和对其熟练的运用，因此通过本次设计不仅仅是一次对我们大学生涯里的知识的了解，也是对我们的测验。 本为零件数控加工工艺设计，首先根据零件的图纸及技术要求进行了详细的数控加工工艺分析，分析过后对该零件进行了数控加工工艺设计，拟定了加工方案，选择了加工设备、加工刀具、夹具，确定了装夹方案、切削用量，制定了加工顺序、编制了零件的数控加工工序卡片和刀具卡片等。最后，详细说明了如何运用UG自动编程编制该零件的数控程序。 关键词：数控加工、工艺设计、自动编程、仿真加工 Abstract Today's CAD/CAM are based o
n
numerical co
ntrol tech
nology. Today's k
nowledge of NC machi
ni
ng skills is a must for mecha
nical stude
nts today. I
n the process of
numerical co
ntrol processi
ng, the k
nowledge i
nvolved i
n curre
nt digital co
ntrol tech
nologies isvery broad a
nd pe
netrates i
ntovarious i
ndustries such as machi
nery i
ndustry, ma
nufacturi
ng i
ndustry a
nd military i
ndustry. Almost all of the expertisewe have lear
ned duri
ng our college career has bee
n combi
ned. This graduated desig
n made me more familiarwith the CNC k
nowledge, a
nd at the same time made me more familiarwith the CAD a
nd UG software u
ndersta
ndi
ng a
nd the use of its proficie
ncy, so through this graduatio
n desig
n is
not o
nly a k
nowledge of our u
niversity career It is also a test for us. This thesis is desig
ned for the part NC machi
ni
ng process. The paper firstly carried out a detailed a
nalysis of the NC machi
ni
ng process based o
n the drawi
ngs a
nd tech
nical requireme
nts of the parts. After the a
nalysis, the partwas subjected to the
numerical co
ntrol processi
ng tech
nology desig
n, the processi
ng pla
nwas formulated, a
nd the processi
ng equipme
nt a
nd processi
ngwere selected. Tools, fixtures, fixtures, cutti
ng qua
ntities, machi
ni
ng seque
nces, CNC machi
ni
ng process cards, tool cards, etc. Fi
nally, it explai
ns i
n detail how to use UG automatic programmi
ng to compile the NC program of the part. Keywords: CNC machi
ni
ng, process desig
n, automatic programmi
ng, simulatio
n processi
ng 目录 摘要I 目录II 1数控加工工艺基础概述1 1.1数控加工工艺的特点1 1.2数控加工工艺设计的主要内容1 1.3数控加工工序的设计方法2 2零件图分析4 2.1零件零件图4 2.2零件零件图分析4 2.3毛坯选择4 3零件的数控加工工艺设计6 3.1定位基准选择6 3.2表面加工方法的选择7 3.3工序与工步的划分7 3.4加工设备的选用8 3.5刀具选择11 3.6切削参数选择11 3.7工艺卡片的填写13 4基于UG的建模造型14 4.1 UG软件功能简介14 4.2基于UG的典型零件的三维造型14 4.2.1.新建文件14 4.2.2建立底部特征15 4.4.3创建上部分特征16 5零件的数控加工程序编制19 5.1零件编程方法选择19 5.2零件数控加工程序的编写19 5.2.1进入UG加工模块19 5.2.2创建程序20 5.2.3创建刀具21 5.2.4创建几何体21 5.2.5铣削编程参数设置22 总结29 致谢30 参考文献31