Automatic feeding system of woodworking machine based on PLC and LIM

 

WANG Shuai, MIAO Dong-min, SHEN Jian-xin

(College of Electrical Engineering, Zhejiang University, Hangzhou 310027, China)

 

Abstract: Aiming at the problems of intense work, high risk, low precision and complex operation, a large thrust linear induction motor(LIM) was designed, programmable logic controller(PLC) was used to realized the whole functions of wood processing, the woodworking machine was proposed and designed finally. Linear induction motor(LIM) was used to drive the workbench so as to cut the wood, and a servo motor was used to feed the wood with a given cutting thickness. A programmable logic controller(PLC) was utilized to control the LIM and servo motor respectively for a dynamically regulated cutting speed, as well as for setting and displaying the system parameters in the humancomputer interface. The results indicate that the system reduces the labor intensity and manual help; on the other hand, it has a higher reliability, longer life and more flexible use compared to the conventional drive system which is fed by a servo motor through a ballscrew mechanism.

Key words: PLC; linear induction motor(LIM); woodworking machine; automatic feeding