机械专业交际英语(第2版)汤彩萍电子课件-3

LS3

Masterbasicmachiningpractice1LS3

MasterbasicmachiningpraOverviewGeneraloperationsonthelatheThreeelementsLathesafetyprecautionsTurningoperations2OverviewGeneraloperationsonturning3turning3facing4facing4boring5boring5drilling6drilling6threading7threading71.ThreeelementsCuttingspeedFeedDepthofcut81.ThreeelementsCuttingspee99（1）CuttingspeedVc10（1）CuttingspeedVc10MaterialstobeworkedonAluminumSteel,highcarbonSteel,mediumcarbonSteel,lowcarbonSteel,stainless11MaterialstobeworkedonAlumiMaterialofcutterbitCarbonsteeltoolHighspeedsteeltoolCarbidetippedtool12MaterialofcutterbitCarbonsSpindlespeed1.IfD=63mm,S=300r/min,thenVc=?2.IfD=63mm,S=600r/min,thenVc=?3.IfD=63mm,S=900r/min,thenVc=?13Spindlespeed1.IfD=63mm,S=3（2）FeedUnit:mmorinchperrevolution1inch=25.4mm14（2）FeedUnit:mmorinchperreFeedandsurfacefinishRoughcut---heavy---poorfinish---lowerspeedFinishingcut---light---finefinish---higherspeed0.01~0.02inor0.254~0.508mm15FeedandsurfacefinishRoughcFeedrateandsurfacefinish1.IfS=800r/min,f=0.1mm,thenVf=?2.IfS=800r/min,f=0.3mm,thenVf=?3.IfS=800r/min,f=0.5mm,thenVf=?Thefeeddeterminesthesurfacequality.16FeedrateandsurfacefinishTh（3）Depthofcut17（3）Depthofcut17DepthofcutandsurfacefinishRoughcut---heavy---poorfinish---lowerspeedFinishingcut---light---nicefinish---higherspeed3/16~1/4inor4.763~6.35mm18Depthofcutandsurfacefinis2.LathesafetyWearsafetyglasses,workshoesAvoidloosesleeves,longhair,jewelry

……192.LathesafetyWearsafetyglSafetyglasses20Safetyglasses20Chuckguard21Chuckguard21Chuckkeywithspring22Chuckkeywithspring22Donotusecompressedairwhencleaningmachines.23DonotusecompressedairwhenAlwaysusetheleft-handedfilingmethodonalathe.24Alwaysusetheleft-handedfilHandleheavychuckswithcareandprotectthelathewayswithablockofwood.25Handleheavychuckswithcare3.TurningoperationsChuckingtheworkAdjustingthetoolbitSettingspeedandfeedTurningwithhandfeedTurningwithpowerfeedMeasuringthediameterFilingtheedge263.TurningoperationsChuckingChuckingtheworkSafety:?CylindricaljobInsert…Tighten…Rotate…Tighten…Remove…27ChuckingtheworkSafety:?CyliAdjustingthetoolbitNearthefreeendTouchthesideoftheworkJustbeyondthefreeend28AdjustingthetoolbitNeartheSettingspeedandfeed45#lowcarbonsteel,1.5”S=?Feed=?29Settingspeedandfeed45#lowTurningwithhandfeedAdjustthedepthofcutusingcrossslidecrankStartthespindleMovethecarriagetowardstheheadstockwithcarriagehandwheelStopthespindleRetractthetoolAdjustthedepthofcutforthesecondpassRepeattheaboveprocedure30TurningwithhandfeedAdjusttTurningwithpowerfeedTurnthemotoronAdjustthedepthofcutEngagethepowerfeedlever31TurningwithpowerfeedTurnthMeasuringthediameter32Measuringthediameter32More…33More…33FileandfilingTangend34FileandfilingTangend34Dialcaliper35Dialcaliper35micrometer36micrometer36习题答案请扫描关注“机电双语学堂”37习题答案请扫描关注“机电双语学堂”37Thankyouforyourattention!38Thankyouforyourattention!3LS3

Masterbasicmachiningpractice39LS3

MasterbasicmachiningpraOverviewGeneraloperationsonthelatheThreeelementsLathesafetyprecautionsTurningoperations40OverviewGeneraloperationsonturning41turning3facing42facing4boring43boring5drilling44drilling6threading45threading71.ThreeelementsCuttingspeedFeedDepthofcut461.ThreeelementsCuttingspee479（1）CuttingspeedVc48（1）CuttingspeedVc10MaterialstobeworkedonAluminumSteel,highcarbonSteel,mediumcarbonSteel,lowcarbonSteel,stainless49MaterialstobeworkedonAlumiMaterialofcutterbitCarbonsteeltoolHighspeedsteeltoolCarbidetippedtool50MaterialofcutterbitCarbonsSpindlespeed1.IfD=63mm,S=300r/min,thenVc=?2.IfD=63mm,S=600r/min,thenVc=?3.IfD=63mm,S=900r/min,thenVc=?51Spindlespeed1.IfD=63mm,S=3（2）FeedUnit:mmorinchperrevolution1inch=25.4mm52（2）FeedUnit:mmorinchperreFeedandsurfacefinishRoughcut---heavy---poorfinish---lowerspeedFinishingcut---light---finefinish---higherspeed0.01~0.02inor0.254~0.508mm53FeedandsurfacefinishRoughcFeedrateandsurfacefinish1.IfS=800r/min,f=0.1mm,thenVf=?2.IfS=800r/min,f=0.3mm,thenVf=?3.IfS=800r/min,f=0.5mm,thenVf=?Thefeeddeterminesthesurfacequality.54FeedrateandsurfacefinishTh（3）Depthofcut55（3）Depthofcut17DepthofcutandsurfacefinishRoughcut---heavy---poorfinish---lowerspeedFinishingcut---light---nicefinish---higherspeed3/16~1/4inor4.763~6.35mm56Depthofcutandsurfacefinis2.LathesafetyWearsafetyglasses,workshoesAvoidloosesleeves,longhair,jewelry

……572.LathesafetyWearsafetyglSafetyglasses58Safetyglasses20Chuckguard59Chuckguard21Chuckkeywithspring60Chuckkeywithspring22Donotusecompressedairwhencleaningmachines.61DonotusecompressedairwhenAlwaysusetheleft-handedfilingmethodonalathe.62Alwaysusetheleft-handedfilHandleheavychuckswithcareandprotectthelathewayswithablockofwood.63Handleheavychuckswithcare3.TurningoperationsChuckingtheworkAdjustingthetoolbitSettingspeedandfeedTurningwithhandfeedTurningwithpowerfeedMeasuringthediameterFilingtheedge643.TurningoperationsChuckingChuckingtheworkSafety:?CylindricaljobInsert…Tighten…Rotate…Tighten…Remove…65ChuckingtheworkSafety:?CyliAdjustingthetoolbitNearthefreeendTouchthesideoftheworkJustbeyondthefreeend66AdjustingthetoolbitNeartheSettingspeedandfeed45#lowcarbonsteel,1.5”S=?Feed=?67Settingspeedandfeed45#lowTurningwithhandfeedAdjustt