1、 本科毕业设计（论文）本科毕业设计（论文） BACHELOR DISSERTATION 论文题目：基于 UG 变速齿轮箱体数控加工生产线设计 学科专业： 机械设计制造及自动化 作者姓名： 导师姓名： 完成时间： 2012.5.20 2012 年 5 月 20日 基于基于 UGUG 变速齿变速齿轮箱体数控加工生产线设计轮箱体数控加工生产线设计 摘摘 要要 加工中心简称 CNC。是一种由机械设备与数控系统组成的使用于加工 复杂形状工件的高效率自动化机床。加工中心的突出特点为加工工序集中 和能够实现自动换刀，对于形状复杂、精度要求较高和要求换刀频繁的零 件的加工能够提高生产效率、缩短生产周期以获得较
2、好的经济效果。 本次设计针对的零件为三星齿轮箱体，形状复杂、有一定的精度要求 并且加工工序较多，因而选择在加工中心上加工很合适。 设计首先用 UG 软件绘制零件图、毛坯图，然后对零件进行分析，确定 合适的加工工序，根据工序选择相应的定位基准，制定加工工艺，选择切 削用量并计算基本工时，用 AutoCAD 绘制加工工艺综合卡，用 UG 导出其 中一道工序的数控加工 G 代码，选择两道加工工序设计夹具并用 CAD 绘制 夹具装配图。 关键词：三星齿轮箱体；工艺；工序；加工中心；夹具关键词：三星齿轮箱体；工艺；工序；加工中心；夹具 ii UG-based Design of CNC Machinin
3、g Production Line of the Gear Box ABSTRACT Processing center referred to as CNC. Composed by mechanical equipment and numerical control systems used for processing complex shape of workpiece, CNC is a kind of high efficiency automation machine tools. Processing operations focused and able to achieve
4、 automatic tool change is a prominent characteristic of the machining center. When used to process workpieces which are of complex shape, of high accuracy and require for frequent tool change, it can improve production efficiency, shorten the production cycle in order to obtain better economic effec
5、ts. This design is for partNorton gear box who have complex shape, certain degree of accuracy and more processing process.So it is relatively appropriate to process in the processing center. The first step of this design is to use UG to draw the part drawing, blank drawing and process work preface d
6、iagram. Then analysing the part so as to determine appropriate manufacturing procedure, using the UG software export procedure of NC machining process, selecting the appropriate location basis to develop a process route, choosing processing equipment and tools, fixtures, measuring, and calculating each procedure of the basic working hours, drawing processing process card. Finalize the fixture design of two process and complete th
