數(shù)控加工空間運動平滑路徑的規(guī)劃.pdf

1、揚州大學碩士學位論文數(shù)控h口_r空間運動平滑路徑的規(guī)劃(申請碩士學位)黃建指導教師：宋愛平教授揚州大學中華人民共和國，揚州I2013年5月IIABSTRACTWithhighcuttingspeed，feedspeedandhighmachinigaccuracyasthemaincharacteristicsofhighspeedmachiningtechnologyisoneofthefouradvancedmanufacturin

2、gtechnologyatpresent，isahightechmanufacturingtechniquestoproducethesecondrevolutionaryleap，Atpresent，theworldisstrivingtodevelopitsownhighspeedmachiningtechnologythesuccessfulapplicationofhighspeedmachiningtechnologyhasa

3、hugeeconomicbenefitsThispaperpresentsakindofadjustableforminterpolationsplinecurve，relizetheunifkddescripitionofthestrmghtline，quadraticcurveandfreecurve，thenplanninganddescriptionCNCmovementsmoothpathbasedonthesplinecur

4、ve；regardplaneCNCmotionpathandsurfaceCNCmotionpathasoptimizationobject，usingadjustableformofinterpolationsplinefunctiontodescriptionmotionpathprocessingcomersmoothswitching，using3Dspirallineplanningsurfaceprocessingsmoot

5、hpathexplorethehighspeedhighprecisionsmoothinterpolationmethodThispaperexploresacubicinterpolationcurvewhichhasunifiedexpressiontothevarioussegments，butalsohasasimplecalculationprocessBasedonit，thispaperputforwardsaninte

6、rpolationcurvesplineinterpolationmethod，itseasierquickerthanNURBSinterpolationandalsowithcontinuityandsmoothness，effectivelyimprovethereliabilityofthemachiningqualityandmachiningprocess，andthisinterpolationcalculationmet

7、hodiseasytoachieverealtimesplinecurvesmoothinterpolation，isgoodforhighspeedandprecisionofncmachiningThispaperputforwardsanadjustableformofcubicsplineinterpolationfunctionusedtodescribethencmachiningpathithasthecharacteri

8、sticsofsimplecalculationandstructuraldiversity，usingthesplinefunctionCandescribelinearckcularandfleecurve，makingUSofadjustableformofthecubicsplineconnectingcurveforcomertransitiontoreducemotionimpact，tobettermeettherequi

9、rementsofhighspeedmachiningThispaperproposesthe“3Dspacespiral’smoothmotionpathplanningmethod，inthewholeprocessofsurfacefinishing，cuttercontactpointiscontinuousspace3Dspiral，thederivativeofthewholetrajectoryandthetoolmoti

10、onspeedalsowiththedirectionofthetransformationarecontinuous，effectivelyreducemovementimpact，realize“macrosmoothness’’ofthewholemotionpath；Inadditionusinginterpolationsplinetodescribethewholemotionpathbasedontheinterpolat