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Copyright of Journal of South China University of Technology (Natural Science Edition) is the property of South China University of Technology and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of Nanjing University of Information Science & Technology (Natural Science Edition) / Nanjing Xinxi Gongcheng Daxue Xuebao (ziran kexue ban) is the property of Editorial Office of Journal of Nanjing University of Information Science & Technology and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of South China University of Technology (Natural Science Edition) is the property of South China University of Technology and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Aiming at tlie problem of large deformation forming technology of engine multi-"wedge pdey，the plastic deformation theory，material constitutive model and friction type betbeen materials of multi-'wedge pdey material were elaborated. Three-dimensional modeling and assembly of blank，spinning wheel，core mould and tail top in spinning process of multi-wedge pulley were carried out，and the relative motion between parts was analyzed. According to the wedge structure characteristics of belt pulley，based on Deform software and rigid-plastic model，the finite element numerical simulation of stamping forming and four-way spinning process was put forward to complete the forming of multi-bedge belt pdey，and the real-time dynamic stress-strain state and forming defects of each spinning process were analyzed. The stam ping forming and four-bvay spinning process were verified by die trial production and actual processing. The results indicate that the grooves and teeth of the multi-wedge belt are full，the shape and size of the workpiece machined basically coincide with the part drawing，and the forming effect is beter. The spinning process can complete the forming process of the multi-wedge belt pulley. [ABSTRACT FROM AUTHOR]