预览加载中，请您耐心等待几秒...

刚挠结合板钻孔参数研究.docx

预览
1/2
2/2

在线预览结束，喜欢就下载吧，查找使用更方便

下载提示 文本预览

如果您无法下载资料，请参考说明：

1、部分资料下载需要金币，请确保您的账户上有足够的金币

2、已购买过的文档，再次下载不重复扣费

3、资料包下载后请先用软件解压，在使用对应软件打开

刚挠结合板钻孔参数研究 Abstract Inthispaper,weinvestigatedthedrillingparametersforlaminatedcompositematerials.Specifically,wefocusedonthescratchinganddrillingofcompositelaminates.Aseriesofexperimentswereconductedtoexaminetheeffectsoffeedrate,spindlespeed,anddrillbitgeometryonthemachiningqualityandefficiencyofthedrillingprocess.Resultsshowedthatthechoiceofdrillingparameterhasasignificanteffectonthedrillingqualityandefficiencyofcompositematerials.Optimalparameterswerederivedforthepurposeofimprovingtheproductivityandqualityofthedrillingprocess. Introduction Laminatedcompositematerialsarewidelyusedtodayfortheirhighstrength-to-weightratio.Thesematerialsarecommonlycomprisedoflayersoffiberorfabricimpregnatedwitharesinmatrix.However,thedrillingofthesematerialsremainsachallengeduetotheinterlayerdelaminationandtheaccumulationofheatgeneratedduringthedrillingprocess.Toovercomethesedifficulties,anumberofstudieshavefocusedonoptimizingthedrillingparameterssuchasfeedrate,spindlespeed,anddrillbitgeometry. ExperimentalDesign Threetypesofdrillingparameterswereinvestigatedinthisstudy.Theseincludethefeedrate,spindlespeed,anddrillbitgeometry.ATaguchiL9orthogonalarraywasemployedtoplanandperformtheexperiments.Thenineexperimentswererununderthecombinationofthreelevelsoffeedrate(F)at0.05,0.08,and0.11mm/rev,threelevelsofspindlespeed(S)at8000,10000,and12000rpm,andthreelevelsofdrillbitgeometry(G)for2-flute,3-flute,and4-flutedrillbits. ResultsandDiscussion Theresponseparametersmeasuredwerethethrustforce,delaminationlength,andholequality.Theresultsshowthatthefeedratehasthemostsignificanteffectonthethrustforce.Asthefeedrateincreased,thethrustforceincreased.Thespindlespeedanddrillbitgeometryalsohadsignificanteffectsonthethrustforce.Similarly,thedelaminationeffectswerealsosignificantinresponsetothedrillingparameters.Theholequalitywasalsohighlydependentonthedrillingparameters.Theoptimalcombinationofparameterswasfoundtobeafeedrateof0.05mm/rev,spindlespeedof10000rpm,anda4-flutedrillbit. Conclusion Inconclusion,the