曲轴非圆磨削表面几何形状误差及其在线测量方法的研究

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1、上海大学博士学位论文曲轴非圆磨削表面几何形状误差及其在线测量方法的研究姓名：田应仲申请学位级别：博士专业：机械制造及其自动化指导教师：方明伦20070501上海大学博士学位论文用纸ABSTRACTAsakeypartofengine，thecrard

2、nofthecrankshaf}manufacture，thenoncirculargnndingprocesstechnologyemergedasthetimesrequire，whichavoidsthefixturet口'rorsintheconventionalgrindingprocessforcrankshaR．Inthenoncircular鲥ndingprocess，therearevariousinfluencesaffecttheprocessprecisionandthesurfacequalityofthecrankpin

3、．Therefore,theresearchesonthemeasurementmethodofdiameterandroundnesse／TOr$ofcrankshaftandthewayofdatafeedbackhavethegreatsignificanceintheoryandeconomy．Theseresearchworkscannoton工Yimproveandcommercializetheon-linemeasurementtechnologyforthecrankshaftnobcircular岱rinding,butalso

4、canenhancethequalityandcompetitionofthedomesticadvancedmanufactureequipment．Themaincontentsofthisdissertationarefocusedonthesurfaceforme．1rrorsandthegeometricaldimensionofcrankshaft，inchidingthecentralfactorsthatimpairmachiningquality,therelationshipbetweenthevibrationandthesu

5、rfacequalityinthecrankshaftnoncirculargriadingprocess，theon-linetracingmeasurementsystemfordiameterandroundnesserrorsaswellasthethree—sensortracingprincipleadoptedforroundnessefrorseparation．碱sdissertationmakessomeereativeresearchesonthefollowingaspects：Themotionprocessofthecr

6、ankshaftnoncirculargrindingisdescribedfirstly,ThecentralfactorsthataffectdiameterandroundnesselTorsofcrankshaftnoncirculargrindingprocessaleanalyzedindepth．111ecompensationmodelforthecrankpin’sdefcIrmationduetogrindingforoeisdeveloped．Itisshownthatthedeformationmodelcalculated

7、resultscoincidewiththeexperimentallyobservedresults．Andthemachihing—errorintheradialdirectionofthecrankpincarlbeeasilywerkedoutaccordingtothepredictivemodelofcrankpin’sdeformation．whichunderpinsnleerrorcompensationincrankshaftnoncirculargrindingprocess·Thevibrationanditsinflue

8、ncesoccurringinthecrankshaftnoncirculargrindingprocessarestud