數(shù)控鏟磨床縱向進給系統(tǒng)的設計論文[帶圖紙].doc

數(shù)控鏟磨床縱向進給系統(tǒng)的設計摘要鏟磨床是滾刀、成型銑刀等復雜刀具的精加工機床。由于傳統(tǒng)鏟磨床加工精度下降、生產效率低，工人勞動強度大，本設計對傳統(tǒng)鏟磨床的縱向進給機構進行數(shù)控化改造來改善其上述不足之處。通過對目前工廠中傳統(tǒng)的鏟磨床進行研究，參考數(shù)控機床的相關文獻，了解鏟磨床縱向進給部分的工作原理，并深入分析鏟磨床在加工的過程中各個零部件的受力情況，按壽命計算選擇了絲杠的尺寸規(guī)格，并校核了額定動載荷、傳動效率、剛度，最終選擇了漢江機床廠生產的滾珠絲杠。通過對主軸受力的分析選擇了用推力球軸承承受軸向力，用深溝球軸承承受徑向力的形式。導軌的選取參考了漢江機床廠生產的滾動導軌，對導軌的壽命以及額定載荷進行了校核，均能滿足要求。電機根據(jù)滾珠絲杠的導程計算出的最高轉速，和傳動過程中的最大轉矩選取了富士公司的伺服電機并對轉動慣量進行了校核。由于采用了閉環(huán)系統(tǒng)，在查閱了光柵尺的相關參數(shù)后，選擇FAGOR公司的光柵尺能使在規(guī)定的行程內定位分辨率達到要求。通過上述設計實現(xiàn)了鏟磨床縱向進給系統(tǒng)的數(shù)控化改造，滿足了加工精度的要求，具有加工穩(wěn)定可靠，效率高等優(yōu)點。關鍵詞:數(shù)控鏟磨床；縱向進給系統(tǒng)；精加工；閉環(huán)系統(tǒng)IDesignofLongitudinalFeedSystemofCNCReliefGrindingMachineAbstractCNCreliefgrindingmachineisacomplextoolfinishingmachineforhobbingcutter,formedmillcutter.Becausetraditionalreliefgrindingmachinesaccuracyandproductionefficiencyislow,theworkerslaborintensityistoobig.Thepurposeofthenumericalcontrolreformationforthelongitudinalfeedsystemoftraditionalreliefgrindingmachineistoimprovetheperformance.Afterthetraditionalreliefgrindingmachinehadbeenresearchedinthefactoryatpresent,andreferencerelatedliteratureofCNCmachinetools,Thelongitudinalfeedpartofreliefgrindingmachineofworkingprinciple,andin-depthanalysisofreliefgrindingmachineintheprocessofmachiningforcesituationofeverypartsandcomponents.Accordingtothelifeofscrew，chosedthesizeofscrew.Andcheckedthedynamicloadrating,transmissionefficiency,stiffness.UltimatelychosetheballscrewproducedbyHanjiangMachineToolFactory.Throughtheanalysisoftheforceactingonthespindle.Athrustballbearingunderaxialforcehadbeenchosed,andadeepgrooveballbearingsbearradialforce.WithreferencetotherollingguideproducedbyHanjiangMachineToolFactory,andcalculatingthelifeofrailandratedload,Allparametersofguidecansatisfiedtherequirements.Accordingtothehighestspeedofthemotorwhichiscalculatedaccordingtotheleadofballscrewandmaximumtorqueoftransmissionprocess,TheservomotorFujiCorphadbeenchosed.Andthemomentofinertiaischecked.Duetotheadoptionoftheclosed-loopsystem,therelatedparametersofgratingrulerlookup,ThegratingrulerproducedbyFAGORcompanyhadbeenchosed,whichcansatisfiedthatPositioningresolutionmeettherequirementsstipulatedinthedistance.IIThroughthedesign,ImplementationoftheNCtransformationofreliefgrindingmachinelongitudinalfeedsystem,Itmeetstherequirementofprocessingprecision,andtheprocessingisstableandreliable,highefficiency.Keywords:CNCreliefgrindingmachine；Longitudinalfeedsystem；Finishmachining；ClosedloopsystemIII目錄1緒論.11.1概述.11.2數(shù)控機床的優(yōu)點.21.3數(shù)控機床的組成.22總體方案設計.62.1機床的運動關系.62.2傳動方案的設計.62.2.1絲杠的選型及支撐方式的設計.62.2.2檢系統(tǒng)的選取.72.2.3導軌的選定.72.2.4絲杠和電機連接零件的選取.82.2.5軸承類型的選取.83進給伺服系統(tǒng)機械部分計算與校核.93.1滾珠絲杠螺母副的計算和選型.93.1.1額定動載荷.93.1.2傳動效率校核.113.2軸承的計算和選型.113.2.1推力球軸承的選型.113.2.2深溝球軸承的選型.123.3絲杠的剛度和穩(wěn)定性校核.133.3.1絲杠的剛度校核.133.3.2穩(wěn)定性校核.143.4導軌的計算和選型.143.4.1滾動直線導軌副行程長度的壽命.143.5伺服電機的計算和選型.153.5.1電機轉速的選取.163.5.