基于UG的整体叶轮加工工艺

分类号UDC单位代码10644密级公开学号xxxxxxx本科毕业设计压气机叶轮加工工艺学生姓名：二级学院：物理与机电工程学院专业：机械工程及自动化班级：201x级x班学号：20110xxxxx指导教师：xxx完成时间：年月日中国达州年月1目录摘要.................................................................................................................................................2Abstract...........................................................................................................................................31.引言............................................................................................................................................42.压气机叶轮结构加工工艺分析................................................................................................42.1压气机叶轮结构分析........................................................................................................42.2压气机叶轮的技术要求....................................................................................................62.2.1对压气机叶轮的设计制作要求.............................................................................62.2.2对压气机叶轮的加工要求.....................................................................................62.2.3叶轮的加工难点.....................................................................................................73.压气机叶轮毛坯的确定............................................................................................................73.1叶轮材料的选择................................................................................................................73.2叶轮毛坯的选择................................................................................................................84.压气机叶轮加工工艺路线设计................................................................................................94.1加工方法的选择..............................................................................................................94.2加工阶段的划分..............................................................................................................95.压气机叶轮的工艺设计..........................................................................................................105.1机床选择........................................................................................................................105.2定位基准、夹紧方案的确定......................................................................................105.3刀具选择........................................................................................................................115.4进给路线和工步顺序的确定........................................................................................125.4.1加工坐标系...........................................................................................................125.4.2UG加工及仿真步骤............................................................................................135.4.3UG加工及仿真结果与模型的比较....................................................................256．总结.........................................................................................................................................26参考文献.......................................................................................................................................28致谢.............................................................................................................................................292压气机叶轮加工工艺机械工程及自动化2011级x班：xxx指导教师：xxx摘要：离心压缩机叶轮的加工是一个多轴数控加工中最常见的例子，现如今数控高速铣削加运用于整体叶轮加工的技术已经相对成熟，但多依赖于国外的软件。本文主要介绍了压缩机叶轮的加工工艺过程、详细分析了叶轮的仿真全过程。主要工作包括以下三个方面：(1)本文根据实习公司实际的生产情况和研究需求，使用UG8.0软件进行压气机叶轮的工艺分析。运用UG8.0加工模块的型腔铣、可变轮廓铣、叶轮加工等方法完成对叶轮加工的编程、仿真加工及后处理。(2)压气机叶轮的主叶片、分流叶片呈不规则曲面状，在径向上随着半径的减小叶片的厚度越来越薄、相邻叶片流道越来越窄、叶片高度逐渐增加、叶片的曲率越来越大，这些无疑是整体叶轮加工的难点和重点。因此，加工叶轮叶片时刀具与被加工叶片之间、刀具与相邻叶片之间及易发生干涉，导致在某些区域程序自动生成时没有不碰撞的刀具轴。本文就是从该难点出发设计压气机叶轮叶片、轮毂、流道的加工工艺。(3)在编程过程中刀具的选择，主轴转速、进给、吃刀量、加工余量的确定，都直接影响加工效率。针对刀轴的约束条件多,自动无法生成可靠的刀轨等问题进行加工工艺分析，确定了采用瑞士米克朗公司的海德汉系统五轴加工中心作为叶轮加工设备，刀具轨迹采用自曲面等值线”方式。关键词：压气机叶轮；UG8.0；加工工艺；叶片3CentrifugalFanImpellerMechanicalengineeringandautomationTheclassxofgrade2011:JxxxxTheinstructor:xxxxAbstract:Centrifugalcompressorimpellermachiningisthemostcommoninstancesofmulti-axislinkagencmachining,itisalsooneofthedifficultiesinncmachining.Thispaperintroducesindetailthewholeprocessoftheimpellermachiningandprocessingprocessmattersneedingattention,forcomplexproductmodelingandncprogrammingprovidesdesignideasandmethods.Mainworkincludesthefollowingaspects:（1）Inthispaper,accordingtotheactualproductionsituationandthedemandofresearch,usingUG8.0softwarefortheanalysisoftheimpeller.Throughprocessingmodulecavitymilling,variablecontourmilling,processingmethodofimpellerimpellermodelofprogramming,simulationprocessandpost-processing.（2）Adjacentintegralimpellerbladelessspace,withthedecreaseoftheradiusontheradialchannelssuchasnarrowprocessingdifficulties,sotheimpellerbladecurvedsurfacemachiningbesidesinterferenceoccursbetweenthecutterandtheprocessingblade,cuttingtoolisinterferencewiththeadjacentblades.（3）Toolplanningconstraints,automaticgenerationoftoolpathismoredifficultproblems,combinedwithpracticalexperience,hascarriedontheprocessingte