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摘要：径流式整体叶轮通常作为汽轮机、水轮机等透平机械的重要组成部分而被大量生产。作为重要的动力元件，径流式整体叶轮也是许多基础工业及能源产业的关键零件。其设计与制造一直是现代制造业的重点研究对象。径流式整体叶轮的表面形状十分复杂，叶片又为光滑薄壁件，叶片扭曲大，加工难度高。同时流道与叶片的表面对加工精度要求也非常高。传统的叶轮加工方法难以满足当下的叶轮生产要求。本文提出了一种以UG软件为设计平台，以FIDIA HS664RT五轴高速加工中心为加工设备的径流式整体叶轮的三文建模及刀具轨迹规划方法。首先在UG的CAD模块下对径流式整体叶轮进行参数化建模，之后对其进行工艺规划。随后在UG的CAM模块下对参数化的模型进行加工方仿真与刀轨生成。最后在刀具轨迹生成后对其进行后置处理以获得可进行实际加工的加工程序。38598
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毕业论文关键词：径流式整体叶轮；五轴联动数控加工；UG
Three-dimensional modeling and five-axis cutting tool path planning of radial-flow integrated impeller
Abstract：Radial-flow integrated impeller, which are mass-produced because of the wide use in turbomachinery, such as steam turbine and hydraulic turbine. As a kind of essential power components, radial-flow integrated impeller is one of critical parts of basic industry and energy industry. Design and manufacturing techniques of radial-flow integrated impeller are researched all the time in modern manufacture industry. Radial-flow integrated impeller have a extremely complex surface. Its blade are smooth, thin, and highly twisty, difficult to machining. High surface quality are also requested. Nowadays, traditional machining method cannot satisfied the request of machining quality prefect any longer. This paper presented a new method of three-dimensional modeling and machining simulation of radial-flow integrated impeller, which based on UG. FIDIA HS664RT five-axis numerical control machining center will be the equipment of machining. First step, build parametric modeling in CAD module in UG. Then finish the machining simulation in CAM module in UG and create cutter path. Finally, post-process will be accomplished after machining simulation in order to create machining program used in practical machining.
Keywords：Radial-flow integrated impeller；Five-axis CNC machining；UG;
目录
前言1
1五轴数控加工技术…2
1.1五轴数控加工技术的价值2
1.2五轴数控加工技术的优势2
1.3五轴数控加工中心的分类3
1.4五轴数控加工中心的发展现状3
1.5复杂曲面五轴加工已取得的研究成果…4
2径流式整体叶轮加工工艺规划6
2.1整体工艺规划…6
2.2五轴联动数控铣削工艺规划…8
3径流式整体叶轮在UG环境下的制造方法研究…13
3.1整体规划…13
3.2三文建模…14
3.2.1 UG三文建模基础14
3.2.2 基于UG的径流式整体叶轮三文建模16
3.3由三文模型导出二文工程图…17
3.4 UG五轴联动数控加工编程基础19
3.4.1 UG CAM模块的构成…19
3.4.2 UG CAM模块的典型刀轨驱动方式…19
3.4.3 UG CAM模块的典型刀轨导动方式…20
3.5刀具轨迹规划及数控程序生成21
3.5.1设定毛坯与部件几何体…21
3.5.2创建叶轮加工几何体24
3.5.3创建切削刀具…27
3.5.4刀具轨迹生成与参数设置28
4后置处理40
4.1五轴数控加工后置处理技术40
4.2后置处理相关名词40
4.3菲迪亚HS664RT-五轴高速加工中心…41
4.4 NC代码生成…42
4.5后处理所得NC文件44
结束语47
致谢…48
参考文献…49
前言