Design and cutting force research of efficient cutting systems for large circular workpieces
WANG Ding sheng1, LU Yong bo1, LI Bin sheng1, LI Lu2, NI Jing2
（1.Zhejiang Julihuang Sawing Machine Group Co., Ltd., Jinyun 321404, China；
2.School of Mechanical Engineering，Hangzhou Dianzi University, Hangzhou 310018, China）

Abstract: Aiming at the problems of the low sawing efficiency, poor accuracy and high energy consumption in traditional metal band sawing machine when machining a large circular workpieces, a new efficient sawing system was designed. Different from the traditional way that feed by the saw frame, the designed cutting system for large circular workpieces used sawing workpiece feed mode. After the analysis of major components and operating principle, the workpiece rotating device was designed. Based on the S7300 PLC, the electrical control system was established. Based on the classic cutting force model and calculating the number of tooth engaged in sawing, the cutting force model and Matlab simulation were also presented. The results indicate that the design can not only make the saw frame smaller, but also make sawing efficiency, accuracy and smaller power consumption than traditional band saws by the change of cutting feed.

Key words: workpiece feed; sawing; band saws; large circular workpieces; cutting force