本科毕业论文题目：数控机床传动与进给机构设计学院:机械自动化学院专业:机械电子工程学号:学生姓名:指导教师:日期:摘要本次设计主要包括两部分内容，第一部分是主传动系统的设计，第二部分是进给传动系统的设计，主传动系统的设计目标是使机床主轴能在一定转速范围内实现无级调速，在设计这一部分时，主要进行了一下几项工作：①分级变速箱的设计，②主轴尺寸设计，③支承方式的选择，为了满足主轴的刚度要求，还要对主轴进行校核计算。进给传动系统设计的主要目标是使机床工作台能在xy方向上自由移动，机床xyz三方向上的传动构件相同，故只需设计x方向传动系统，主要涉及到：①导轨的选型，②滚珠丝杠与支承轴承，③驱动电机的选型与计算，④主要零部件的精度验算，⑤装配图设计，确定各部分零件的主要尺寸后，零件的细节尺寸设计在装配图中完成。在对零件进行校核时，主要根据零件的刚度和寿命进行校核，本次设计主要的设计方法是理论设计和经验设计。关键词：数控铣床；主传动；进给传动；伺服电机AbstractThisdesignmainlyincludestwoparts,thefirstpartisthedesignofthemaindrivesystem,thesecondpartisthedesignofthefeeddrivesystem,themaindrivesystemdesigngoalistomakethemachinespindleinacertainspeedrangetoachievesteplessspeed,Inthedesignofthispart,themainworkcarriedoutafew:classification①gearboxdesign,spindlesizedesign,supportthechoiceofway,inordertomeetthe②③stiffnessrequirementsofthespindle,butalsothespindletocheckthecalculation.Feedingdrivesystemdesignofthemaingoalistomakethemachinetableinthexydirectionoffreemovement,themachinexyzthreedirectionsofthesametransmissioncomponents,soonlythedesignofx-directiondrivesystem,mainlyrelatedto:guide①selection,Ballscrewandbearingbearing,drivemotorselectionandcalculation,③④theaccuracyofthemainpartsofthecalculation,assemblydiagramdesignto⑤determinethemainpartsofthevariouspartsofthesizeofthedetailsofthedesignofpartsintheassemblydiagramtocomplete.Inthepartstocheck,mainlybasedonthestiffnessandlifeofpartstocheck,thedesignofthemaindesignmethodisthetheoreticaldesignandexperiencedesign.Keywords:CNCmillingmachine;Maindrive；Feeddrive；Servomotor目录1绪论....................................................................51.1选题的背景及意义...................................................51.2数控机床的发展情况.................................................51.3设计任务...........................................................62主传动系统设计..........................................................72.1概述...............................................................72.2分级变速箱的设计...................................................72.2.1分级变速箱的变速级数.........................................72.2.2传动公比φ的确定............................................72.2.3传动齿轮齿数的确定...........................................72.3主轴组件的基本要求.................................................82.4采用滚动轴承的主轴组件.........................................92.4.1支承方式的选择...............................................92.4.2轴承间隙的调整与预紧.........................................92.5主轴尺寸设计.......................................................92.6主轴组件的刚度计算................................................102.7轴承润滑和主轴密封................................................112.8本章小结..........................................................113进给传动系统设计.......................................................133.1导轨轴向负载力计算........................................
