数控铲磨床纵向进给系统的设计论文[带图纸].doc

数控铲磨床纵向进给系统的设计摘要铲磨床是滚刀、成型铣刀等复杂刀具的精加工机床。由于传统铲磨床加工精度下降、生产效率低，工人劳动强度大，本设计对传统铲磨床的纵向进给机构进行数控化改造来改善其上述不足之处。通过对目前工厂中传统的铲磨床进行研究，参考数控机床的相关文献，了解铲磨床纵向进给部分的工作原理，并深入分析铲磨床在加工的过程中各个零部件的受力情况，按寿命计算选择了丝杠的尺寸规格，并校核了额定动载荷、传动效率、刚度，最终选择了汉江机床厂生产的滚珠丝杠。通过对主轴受力的分析选择了用推力球轴承承受轴向力，用深沟球轴承承受径向力的形式。导轨的选取参考了汉江机床厂生产的滚动导轨，对导轨的寿命以及额定载荷进行了校核，均能满足要求。电机根据滚珠丝杠的导程计算出的最高转速，和传动过程中的最大转矩选取了富士公司的伺服电机并对转动惯量进行了校核。由于采用了闭环系统，在查阅了光栅尺的相关参数后，选择FAGOR公司的光栅尺能使在规定的行程内定位分辨率达到要求。通过上述设计实现了铲磨床纵向进给系统的数控化改造，满足了加工精度的要求，具有加工稳定可靠，效率高等优点。关键词数控铲磨床；纵向进给系统；精加工；闭环系统IDESIGNOFLONGITUDINALFEEDSYSTEMOFCNCRELIEFGRINDINGMACHINEABSTRACTCNCRELIEFGRINDINGMACHINEISACOMPLEXTOOLFINISHINGMACHINEFORHOBBINGCUTTER,FORMEDMILLCUTTERBECAUSETRADITIONALRELIEFGRINDINGMACHINE’SACCURACYANDPRODUCTIONEFFICIENCYISLOW,THEWORKERSLABORINTENSITYISTOOBIGTHEPURPOSEOFTHENUMERICALCONTROLREFORMATIONFORTHELONGITUDINALFEEDSYSTEMOFTRADITIONALRELIEFGRINDINGMACHINEISTOIMPROVETHEPERFORMANCEAFTERTHETRADITIONALRELIEFGRINDINGMACHINEHADBEENRESEARCHEDINTHEFACTORYATPRESENT,ANDREFERENCERELATEDLITERATUREOFCNCMACHINETOOLS,THELONGITUDINALFEEDPARTOFRELIEFGRINDINGMACHINEOFWORKINGPRINCIPLE,ANDINDEPTHANALYSISOFRELIEFGRINDINGMACHINEINTHEPROCESSOFMACHININGFORCESITUATIONOFEVERYPARTSANDCOMPONENTSACCORDINGTOTHELIFEOFSCREW，CHOSEDTHESIZEOFSCREWANDCHECKEDTHEDYNAMICLOADRATING,TRANSMISSIONEFFICIENCY,STIFFNESSULTIMATELYCHOSETHEBALLSCREWPRODUCEDBYHANJIANGMACHINETOOLFACTORYTHROUGHTHEANALYSISOFTHEFORCEACTINGONTHESPINDLEATHRUSTBALLBEARINGUNDERAXIALFORCEHADBEENCHOSED,ANDADEEPGROOVEBALLBEARINGSBEARRADIALFORCEWITHREFERENCETOTHEROLLINGGUIDEPRODUCEDBYHANJIANGMACHINETOOLFACTORY,ANDCALCULATINGTHELIFEOFRAILANDRATEDLOAD,ALLPARAMETERSOFGUIDECANSATISFIEDTHEREQUIREMENTSACCORDINGTOTHEHIGHESTSPEEDOFTHEMOTORWHICHISCALCULATEDACCORDINGTOTHELEADOFBALLSCREWANDMAXIMUMTORQUEOFTRANSMISSIONPROCESS,THESERVOMOTORFUJICORPHADBEENCHOSEDANDTHEMOMENTOFINERTIAISCHECKEDDUETOTHEADOPTIONOFTHECLOSEDLOOPSYSTEM,THERELATEDPARAMETERSOFGRATINGRULERLOOKUP,THEGRATINGRULERPRODUCEDBYFAGORCOMPANYHADBEENCHOSED,WHICHCANSATISFIEDTHATPOSITIONINGRESOLUTIONMEETTHEREQUIREMENTSSTIPULATEDINTHEDISTANCEIITHROUGHTHEDESIGN,IMPLEMENTATIONOFTHENCTRANSFORMATIONOFRELIEFGRINDINGMACHINELONGITUDINALFEEDSYSTEM,ITMEET’STHEREQUIREMENTOFPROCESSINGPRECISION,ANDTHEPROCESSINGISSTABLEANDRELIABLE,HIGHEFFICIENCYKEYWORDSCNCRELIEFGRINDINGMACHINE；LONGITUDINALFEEDSYSTEM；FINISHMACHINING；CLOSEDLOOPSYSTEMIII目录1绪论111概述112数控机床的优点213数控机床的组成22总体方案设计621机床的运动关系622传动方案的设计6221丝杠的选型及支撑方式的设计6222检系统的选取7223导轨的选定7224丝杠和电机连接零件的选取8225轴承类型的选取83进给伺服系统机械部分计算与校核931滚珠丝杠螺母副的计算和选型9311额定动载荷9312传动效率校核1132轴承的计算和选型11321推力球轴承的选型11322深沟球轴承的选型1233丝杠的刚度和稳定性校核13331丝杠的刚度校核13332稳定性校核1434导轨的计算和选型14341滚动直线导轨副行程长度的寿命1435伺服电机的计算和选型15351电机转速的选取16352电机转矩的计算16353转动惯量的校核1736编码器的选型18IV4进给系统机械部分结构设计1941进给伺服系统装配图的设计1942安装过程中应注意的问题195总结21参考文献22致谢23毕业设计（论文）知识产权声明24毕业设计（论文）独创性声明25