轮胎模具花纹造型设计关键技术

200404091974CAD/CAM[1][2][3]CAD/CAMPro/EUGCATIAPro/EUGTiremap[4]CATIA[5]CADCADCAD/CAM[1]JOURNALOFENGINEERINGGRAPHICSNo.4(100083)TP391A1003-0158(2005)04-0041-06CAD[6]CAD/CAMCAXA-ME11112333212[7],[8]NURBSB∑∑===njkiinikiiiuBWuBWPuP0,0,)()()(1··),,1,0(niPiL=)(,uBkikBiWu]1,0[∈u)(,uBkiBU],,[11,0++=knuuuLU2),(vuSS=3vu,]1,0[,∈vuNURBSvu,[7]NURBSvu,12P1P2P23MαMa3M3MPMPMPMM4PMu,vPP),(vuM),(vu),(vuP′),(vuP′PM44CmilCiS'ililSStep1CSStep2CmStep3CPCStep4SP′PStep5Step6i=1;αM··Step7if(im)Step10Step8ilSStep9i=i+1Step7Step10),(vu,),(vuP),('vuP4M3[1]C1(u)C2(u)vC1(u)C2(u)),(vuP[][]1,0,)()()(),(121∈−+=vuuCuCvuCvuP41l51lpp′dnp″ndp′p″dnpTTdnθq1lθθ2l(4)1l2lS6nd1lθθθ52l1lS6··Tql2l1pp′dnθθp″θ01uuMPuPP′1vvv4[8]77(a)7(b)7(c)2S1S(a)2S1S(b)2S1S(c)758(a)8(b)CAD/CAMCAXA-ME2000(a)8[1],.CADCAM[J].,1997,(4):8~10.[2].CAD/CAM[J].,1999,(1):28~30.[3],.[J].,2002,(3):40~42.[4],.UGCAD/CAM··(b)[J].,2003,32(3):175~177.[5],,.CATIA[J].CAD/CAM,2003,(7):50~52.[6],.[A].:1[C].2002.252~256.[7].B(CAGD&NURBS)[M].:,1994.17~40.[8].[M].:,2000.88~111.KeyTechniqueofTireMouldTreadPatternsModelingLIXiao-wu,LEIYi,WANGXiao-fang,WANGJun(SchoolofMechanicalEngineeringandAutomatics,BeijingUniversityofAeronauticsandAstronautics,Beijing100083,China)Abstract:Designoftreadpatternsisthemainproblemoftiremouldmodeling.Byanalyzingtheprocessoftiretreadpatternsmodeling,thekeystepsoftiremouldmodelingaresummarized,andthesolutionsforeachsteparegiven.Mappingprocessfromtheplanartwo-dimensionaltreadpatternstotiresurfaceisintroducedindetail,includingthemappingtheoryandthealgorithmsolutionfortheotherrelatedproblems,suchastheformingofthepatternwallsurfaceandthepatterncanal.Theoverallprocessgiveseffectiveresults.Keywords:computerapplication;treadpatternsmodeling;mapping;tiremould··