UG的齿轮模具CAD/CAM_锥齿轮模具五轴计算机辅助设计与制造 摘要：基于UG平台进行了齿轮模具的计算机辅助设计及制造(CAD/CAM),完成复杂形状零件的整个设计、加工过程。
UG软件是当今应用最为广泛的大型CAD/CAE/CAM 集成化软件之一，计算机辅助设计、计算机辅助制造作为主要的功能模块，广泛应用于航空、航天、汽车、造船、通用机械和模具等产品加工制造领域。CAD/CAM 系统提供了一个基于过程的产品设计环境，使产品开发从设计到加工真正实现了数据的无缝集成，从而优化了企业的产品设计与制造。
五轴联动机床的使用，让工件的装夹变得容易。加工时无需特殊夹具，降低了夹具的成本，避免了多次装夹，提高模具加工精度。采用五轴技术加工模具可以减少夹具的使用数量。另外，由于五轴联动机床可在加工中省去许多特殊刀具，所以降低了刀具成本。五轴联动机床在加工中能增加刀具的有效切削刃长度，减小切削力，提高刀具使用寿命，降低成本。
基于实验室的HS664五轴数控加工中心，将NC文件导入五轴数控机床，以三爪卡盘方式装夹工件，设定加工坐标系，完成对刀、刀具长度设置等试验加工准备之后，进行齿轮模具的粗、精加工，完成尼龙样件试切。整个设计过程从CAD建模→数控工艺分析→刀具路径轨迹生成→刀具路径2D模拟仿真→五轴数控NC代码生成→实验室样件试切，基于UG平台完成了锥齿轮模具五轴数控加工。
关键词：齿轮模具；五轴联动加工；CAD/CAM；UG
UG gear mold CAD/CAM
Abstract: Based on UG platform of computer aided the gear mold design and manufacturing（CAD/CAM），Complete the whole complex shaped parts design, processing process
Unigraphics (abbreviated UG) software is one of the integrated software of today's application of the most widely used large CAD / CAE / CAM, computer-aided design and computer-aided manufacturing as the major functional modules, are widely used in aviation, aerospace, automotive, shipbuilding, general machineryand processing of molds and other products manufacturing CAD / CAM system provides a process-based design environment, product development from design to processing realize the seamless integration of data, in order to optimize the design and manufacture of products
The use of five-axis machine tools, workpiece clamping easier Processing without special jig, reduces the cost of the fixture, to avoid multiple setups, improve mold machining accuracy The five-axis technology machining mold can reduce the number of fixture use In addition, due to the five-axis machine tool processing, eliminating the need for many special tool, reduces tool costs Five-axis machine tools in the processing can increase the effective length of the cutting edge of the tool, reducing cutting forces, improve tool life and reduce costs
Based on laboratory HS664 5-axis CNC processing center, Will the NC file keyword 5-axis NC machine tools, With three claws chuck way clamping work-piece, Setting processing coordinate system, Complete set of knives, tool length, after such experiment processing preparation For gear thick, finish machining, mold Complete nylon sample try cutting The whole design process and from CAD model→Nc process analysis→Track the tool path generation→The tool path 2D simulation→5-axis NC code generation→Laboratory sample try cutting Based on UG platform completed five axis CNC processing bevel gear mould
Keywords: UG; Five-axis machining; Computer-aided manufacturing CAD/CAM; Gear Mold
目 录
1 绪论 1
11选题背景及课题意义 1
111 选题背景 1
112 课题意义 2
12 五轴联动高速加工技术 3
121 五轴联动数控机床 3
122 五轴刀具轨迹控制的主要关注点 4
13国内外发展现状4
131 五轴联动数控机床 7
132 高速铣削加工技术 7
133 CAD/CAM 8
134 曲面造型 8
14 主要研究内容 8
2 齿轮模具建模 10
21 UG NX简介 10
22 齿轮模具建模过程 14
3 齿轮模具加工工艺设计 16
31 五轴数控加工工艺与传统加工工艺 16
32齿轮模具加工工艺设计 19
4 UG计算机辅助制造 20
41 选择加工环境 20
42 数控加工工艺初始设置 20
421 创建程序组 21
422 创建刀具组 21
423 创建几何组 23
424 创建方法组 26
43 刀具路径轨迹规划方案设计 28
431 粗加工刀具路径轨迹生成 28
432 半精加工刀具路径轨迹生成 32
433 精加工刀具路径轨迹生成 33
44 齿轮模具五轴高速CAD/CAM刀具路径轨迹及模拟仿真 38
5 后置处理生成NC程序 40
51 后置处理技术 40
511 后置处理概念 40
512 后置处理的主要任务 40
6 五轴数控中心样件试切 38
61 实验准备 38
611 UG后处理程序的导入 38
612 毛坯准备 38
613 刀具、夹具准备 40
613 实验过程 40
7 总结 39
致谢 41
参考文献 42
附录 43，3462
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