机械5

盘形零件三维模型创建及数字化制造 Plate types parts to create three-dime
nsio
nal modeli
ng a
nd digital ma
nufacturi
ng 摘要 随着数控技术的不断发展和应用领域的日益扩大，数控加工技术对国计民生的一些重要行业（IT、汽车、轻工、医疗等）的发展起着越来越重要的作用。由于效率、质量是先进制造技术的主体，高速、高精地加工技术可极大地提高效率，提高产品的质量和档次，并且能缩短生产周期和提高市场竞争能力。而对于数控加工而言,无论.是手工编程还是自动编程，它们在编程前都要对所加工的零件进行工艺分析，拟定加工方案，选择合适的刀具，确定切削用量，对一些工艺问题(如对刀点、加工路线等)也需做一些处理，并在加工过程中掌握控制精度的方法,如此才能加工出合格的产品。 本文着重介绍了运用UG软件对遥控器的三维造型设计和数控加工过程，在遥控器的设计中要遵循人机工程学，使设计的遥控器更加合理、更加舒适，同时也要把握当今遥控器发展趋势，满足大众的需求度，通过对壳体的设计后进行数控加工，要确定铣削方式、走刀方式等一系列设置，通过粗加工、二次开粗、曲面和腔槽的精加工最终得出遥控器壳体数控加工程序。 关键词：UG ;三维造型;数控加工;切削用量;铣削方式;走刀方式 Abstract With the co
nti
nuous developme
nt of
numerical co
ntrol tech
nology a
nd applicatio
n field ofwide
ni
ng,
nc machi
ni
ng tech
nology to the
natio
nal eco
nomy a
nd people's livelihood some importa
nt i
ndustry(IT, automobile, light i
ndustry, medical, etc.) is playi
ng a more a
nd more importa
nt role i
n the developme
nt. Due to the efficie
ncy, quality is the mai
n part of the adva
nced ma
nufacturi
ng tech
nology, high speed, high precisio
n machi
ni
ng tech
nology ca
n greatly improve efficie
ncy, improve product quality a
nd grade, a
nd ca
n shorte
n the productio
n cycle a
nd improve the market competitio
n ability. For
nc machi
ni
ng,whatever. It is ma
nual programmi
ng or automatic programmi
ng, before theywill be processed by the parts of process a
nalysis, drafti
ng processi
ng scheme, choosi
ng the appropriate cutti
ng tools, cutti
ng parameter is determi
ned, to some process problems(such as the cutti
ng poi
nt, processi
ng route, etc.) also
need to do some processi
ng, a
nd master the methods of co
ntrol accuracy i
n the machi
ni
ng process, so towork out qualified products. This paper i
ntroduces the usi
ng UG software for the remote co
ntrol of the three dime
nsio
nal modelli
ng desig
n a
nd
nc machi
ni
ng process, i
n the desig
n of the remote co
ntrol should follow the ma
n-machi
ne e
ngi
neeri
ng, the desig
n of the remote co
ntrol more reaso
nable a
nd more comfortable, but also to grasp the developme
nt tre
nd of remote co
ntrol, meet the
needs of the masses, through the study of the
nc machi
ni
ng of the desig
n of the shell after, to determi
ne the milli
ng mode, feedi
ng mode a
nd a series of set, through the rough machi
ni
ng, seco
ndary thick, curved surface a
nd the cavity groove fi
nishi
ng fi
nal remote shell
nc machi
ni
ng program. Keywords: UG; Three-dime
nsio
nal modelli
ng; Nc machi
ni
ng; Cutti
ng parameter; The milli
ng method; Feedi
ngway 目录 摘要i Abstract ii 第1章绪论1 1.1课题来源及研究的目的和意义1 1.2盘类零件的加工特征分析2 1.3盘类零件数控加工工艺内容与步骤2 第2章基于UG的零件建模2 2.1UG软件简介2 2.2UG零件建模过程3 第3章盘类零件的数控加工工艺方案分析8 3.1盘形零件的工艺分析8 3.1.1根据零件图和产品装配图，对零件进行工艺分析8 3.1.2盘形零件的工艺分析8 3.2毛坯选择10 3.3.夹具选择10 3.31夹具的种类10 3.32常见的装夹方式11 3.33夹具的确定11 3.4机床的选择12 3.5刀具的选择12 3.51刀具材料选择的基本要求13 3.52刀具材料分析13 3.53刀具选择原则15 3.6定位基准的选择15 3.7加工顺序的安排17 3.8切削用量的选择17 3.81确定背吃刀量18 3.82确定主轴转速18 3.83确定进给速度18 第4章工艺卡片20 4.1工艺过程卡片20 4.2工序卡片21 第5章基于UG的数控加工25 5.1UGCAM具体操作步骤25 5.2加工后置处理34 结论35 致谢36 参考文献37 附件38