數(shù)控鏟磨床縱向進給系統(tǒng)的設(shè)計論文[帶圖紙].doc

數(shù)控鏟磨床縱向進給系統(tǒng)的設(shè)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(chǎn)效率低，工人勞動強度大，本設(shè)計對傳統(tǒng)鏟磨床的縱向進給機構(gòu)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(guān)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(chǎn)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(chǎn)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(zhuǎn)速，和傳動過程中的最大轉(zhuǎn)矩選取了富士公司的伺服電機并對轉(zhuǎn)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(guān)參數(shù)后，選擇FAGOR公司的光柵尺能使在規(guī)定的行程內(nèi)定位分辨率達到要求。通過上述設(shè)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(guān)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(shè)計.62.1機床的運動關(guān)系.62.2傳動方案的設(shè)計.62.2.1絲杠的選型及支撐方式的設(shè)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(zhuǎn)速的選取.163.5.