磨牙修复体数控加工刀轨生成算法的实现.pdfVIP

Dec．2007 Transactions of Nanjing University of Aeronautics＆Astronautics Vo1．24 No．4 REALIZATIoN oF ALGORITHM OF TOOL PATH GENERATIoN FoR NC MACHINING oF MoLAR PRoSTHESIS Wang Qifeng ．Sun Quanping 。Dai Ning ，Liao Wenhe (1．College of Mechanical and Electrical Engineering，NUAA，29 Yudao Street Nanjing，210016，P．R．China； 2．Digital Manufacturing Technology Lab，Huaiyin Institute of Technology，Huai an，223001，P·R·China) Abstract：The CAD model of molar prosthesis is usually stored in standard templete library(STI )format．A new topological structure is given based on STL format and the vertex—based entity offset algorithm is presented to realize the rapid generation of roughing／finishing tool path for molar prosthesis．Simulation results show that the proposed algorithm prossesses characteristics of excellent stabilization，fast calculation speed and high ma— chining accuracy． Key words：mlar prosthesis；numerical control programming；tool path CLC nurober：TP391．72；R783．3 Document code：A Article ID：1005—1120(2007)04—0323—06 INTRoDUCTIoN Surfacer and UG software，and performed re- searches in process of making full crown．Keqiang During the past two decades，computer—aided Wang，together with his partners，studied the da— dental prosthetic techniques have obtained signifi— ta model for completing denture collection cant progress due to the combination of CAD／ through 3-D chromatography，and completed the CAM technology and traditional dental prosthetic design and manufacture using existing CAD／ techniques．Many commercial dedicated systems， CAM technology after data model reconstruction． such as Cerec 3D，Everest kavo，Cercon made