復(fù)雜曲線高性能數(shù)控加工的關(guān)鍵技術(shù)研究.pdf

1、長安大學(xué)碩士學(xué)位論文復(fù)雜曲線高性能數(shù)控加工的關(guān)鍵技術(shù)研究姓名：王與權(quán)申請學(xué)位級別：碩士專業(yè)：機(jī)械制造及其自動化指導(dǎo)教師：蔡宗琰20110526AbstractWitlltherapiddevelopmentofscienceandtechnologytherequiringofCNCmachiningtechnologyofproducts、析tllcomplexcurvesandcurvedsurfacesinindustrybeco

2、meshigherandhigherInrecentyears，thecriticaltechniquesofmachiningcomplexcurvesandcurvedsurfacesarehighspecd，highprecisionstabilityinmachiningandfairnessoftoolpathThedesignoftool—pathintheprocessingofCNCmachiningdirectlyaf

3、fectsthepropertiesofproductsTakingtheresearchoftoolpathinterpolationforthecomplexcurvewithG1continuitytypeasastartingpoint，the“frameinterpolation’usedintheexistingthree—axisCNCmachiningisprovidedwhichisbasedontheprincipl

4、esofcircularinterpolationandlinearinterpolationFirstbasedonBsplinecurve，thepaperproposedanewinterpolationmethodfortoolpath“frameinterpolation’ThisnewsplinefittingmethodiseasytoprogramandcalculationTakingthemachiningworkt

5、ablerotatefactorsintheinfluenceofthequalityofproductsintoaccountthismethodprovidesanewToolPathGenerationAlgorithmSecondaccordingtotheprinciplesoferrorsgeneratedinprocessing，the“equal—chordrecursivedeviationfittingalgorit

6、hm”isgivenamethodbasedonB—splinetoolcdgeofsteplengthItcanhelpthe“frameinterpolation“’toachievehighspeedandsimplicityinCNCmachiningThen，thepaperdiscussedthephenomenonoftheNCmachiningtoolwearandtoolfortransformationcausedb

7、ytheprocessingsitesByusingthecompensationprincipleofcuttingtool，machiningcuttingerrorcausedby“frameinterpolation’CanbeeffectivelycompensatedFinallybyanalyzingapracticalcaseusing“frameinterpolation’method，，thefeasibilityo

8、fhigh—precisioninfittingdataformachiningcomplexcurvesandcurvedsurfacesisverifiedCompared、)l，itlltheotherinterpolationmethods，the“frameinterpolation“’hassuperiorityandpracticabilityinseveralaspectssuchasfittingprecisionco