成 都 工 业 学 院
毕 业 设 计 （论 文）
               
设计（论文）题目：基于UG的玩具汽车外壳的
三维设计与数控加工     
                 
系 部  名 称：  机电工程系         
专        业：  数控技术           
班        级：    11422           
* *  * **    ***          
学        号：    07               
* *  * **国力汽车    ***            
                   
                                                    二O一四 年 五 月
 
摘要
  本课题是基于UG的玩具汽车的三维设计与数控加工。本文首先解释了为什么会选用UG来进行零件的造型设计，在众多三维设计软件中，UG软件有什么优势。然后对玩具汽车进行三维造型设计，列出设计过程中的注意事项和遇到的问题。
  由于本模型是塑料模型，设计模具时选用注塑模具。模具设计的基本步骤为加载部件、初始设置、分型前的准备、创建分型线、创建分型面、抽取型芯型腔区域、创建型芯和型腔。整个过程有两种方法。一种是手动分型，利用建模环境自带的命令完成分型。另一种是自动
分型，用开始命令里的注塑模向导来按照提供的步骤来分型。随后是对型芯和型腔的加工。利用UG软件对零件的加工，生成刀轨，并导出程序在宇龙数控仿真上模仿真实加工。加工工艺编制需要对零件的材料，加工内容等特性进行分析。对在数铣加工的部分编写加工工艺卡片，和工序卡片。对不能数铣加工的部分，设计电极，采用电火花成型加工。
关键词：UG、三维建模、分型、工艺、电极设计、刀路设计、宇龙仿真
Abstract
    This topic is the 3D design and NC machining of the toy car based on UG. Design this paper explains why UG was selected in many parts, 3D design software, UG software has what advantage. Then the three-dimensional modeling design for toy cars, and the problem encountered
in the design process of the considerations listed.
    Because the model is a plastic model selection of injection mold, mold design. The basic process of die design for load components, initial setting, type of preparation, create partin
g line, create parting surfaces, extraction of core and cavity area, to create the core and cavity. The whole process has two kinds of methods. A manual type, using the modeling environment with the command finished typing. Another is the automatic classification, with start wizard injection command to follow the instructions provided to typing. Then is the processing of the core and cavity. The parts of the processing using UG software, tool path generation, and export procedures in the Yulong NC simulation imitating the real machining. The preparation processing of parts of the material, carries on the analysis processing characteristics. The number of milling part of the preparation of machining process card, and process card. The number of not milling machining parts, design of electrode, using edm.
Keywords: UG, 3D modeling, classification, process, electrode design, tool path design, Yulong simulation