Finite element analysis and optimization of belt with finger-joint CNC punch

KONG Xiong-shan， QIN Bao-rong， LIU Shu-you， ZHU Hao-ke
（Key Lab of E & M， Ministry of Education ＆ Zhejiang Province， Zhejiang University of Technology，
Hangzhou 310014，China）

Abstract： In order to verify whether the belt with finger-joint CNC punch bed stiffness meets the design requirements，the finite element model of the bed was established，the finite element analysis（FEA） and calculation through the software ANSYS were done，then the deformation and the stress distribution of the bed in the nominal pressure stroke were researched. According to the above results，the structure of the lathe was improved. Meanwhile，the best improved scheme was found. On basis of this，the cross-section sizes of support parts were further optimized and a satisfactory result was achieved. The results show that the amount of deformation on the top beam and bottom beam are reduced by 24.1% and 30.1% respectively，the stiffness of the base is improved effectively，meets the design requirements.
Key words： belt；CNC punch；finite element analysis（FEA）；optimum design