数控回转工作台设计说明书

I数控回转工作台设计摘要本次毕业设计的题目是数控回转工作台设计。通过对数控回转工作台的设计，使大学生在步入社会之前，不仅能够设计出数控回转工作台，而且能够掌握机械设计的方法和步骤。本课题研究的主要内容包括：确定数控回转工作台的传动方案；驱动力计算及其他相关计算；零件设计与校核；零件图的绘制与三维模型建立；绘制装配图及运动仿真。对于数控回转工作台的设计，首先，进行总体方案设计，传动方案采用齿轮传动和蜗杆传动；然后进行各零件的设计与校核，蜗杆与轴采用整体式结构；蜗轮与工作台采用螺钉连接；工作台的平衡通过止推轴承来保证；箱体由箱座、箱盖和顶盖组成，其中箱体上设计了圆台和加强筋；最后，对各零件进行装配。数控机床的圆周进给由回转工作台完成，回转工作台可以与X、Y、Z三个坐标轴联动，从而加工出各种球、圆弧曲面等。回转工作台可以实现精确的自动分度，扩大了数控机床加工范围。目前，数控回转工作台主要用于数控镗床和铣床。随着数控技术的应用越来越广泛，数控回转工作台的应用已成为历史的必然。关键词：数控回转工作台；齿轮；蜗杆；箱体；建模IIDesignofNCrotaryworktableAbstractThegraduationprojectisthesubjectofdesignofCNCrotaryworktable.NCrotarytableonthedesign,sothatbeforethestudentsenteredthecommunity,notonlytodesignaCNCrotaryworktable,andcanmasterthemechanicaldesignofthemethodsandprocedures.Themaincontentofthisresearchinclude:determiningthetransmissionschemeofCNCrotaryworktable;drivingforcecalculationandothercalculations;partdesignandverification;partandthree-dimensionalmappingmodel;assemblydrawingandmotionsimulation.NCrotaryworktableforthedesign,firstofall,theoveralldesign,useoftransmissionschemeandwormgeardrive;theneachpartofthedesignandverification,thewholewormandshaftstructure;wormscrewconnectionwiththeworktable;Balanceworktablebythrustbearingstoensure;boxfromtheboxseat,lidandcover,ofwhichtheboxonthedesignoftheroundtableandstrengthenthetendons;Finally,thepartsforassembly.ThecircumferenceofCNCrotaryworktablebythecompletionofthefeed,rotaryworktablewithX,Y,Zthreeaxiscoordinatestobeprocessedintoavarietyofballs,suchascircularsurface.Precisionrotaryworktablecanrealizeautomaticindexing,andexpandtherangeofCNCmachining.Currently,theNCrotarytableCNCboringandmillingmachinesaremainlyused.WithmoreandmorewidespreadapplicationofCNCtechnology,CNCrotaryworktableapplicationshasbecomeahistoricalnecessity.Keywords:NCrotaryworktable;gear;worm;box;modelingIII目录查图清单..................................................................................................................................IV查表清单...................................................................................................................................V引言............................................................................................................................................1第1章绪论..............................................................................................................................21.1本课题的学术背景及理论与实际意义..............................................................................21.2本课题研究的主要内容......................................................................................................21.3数控回转工作台设计原理及优缺点..................................................................................2第2章数控回转工作台的原理与应用...................................................................................42.1数控回转工作台..................................................................................................................42.2设计准则..............................................................................................................................42.3主要技术参数......................................................................................................................5第3章数控回转工作台的设计................................................................................................63.1传动方案的选择.................................................................................................................63.1.1传动方案传动时应满足的要求.......................................................................................63.1.2传动方案及其分析...........................................................................................................63.2电机的选择.........................................................................................................................73.2.1步进电机的原理..............................................................................................................73.2.2步进电机的选择及运动参数的计算..............................................................................83.3齿轮传动的设计.................................................................................................................93.3.1选择齿轮传动的类型与材料.........................................................................................103.3.2按齿面接触疲劳强度设计............................................................................................103.3.3按齿根弯曲强度设计....................................................................................................113.3.4几何尺寸计算.................................................................................................................133.3.5结构设计........................................................................................................................133.4蜗轮及蜗杆的选用与校核...............................................................................................143.4.1选择涡杆传动类型.........................................................................................................143.4.2选择材料...........................................................................................