基于PLC和直线电机的木材加工自动送料机

Automatic feeding system of woodworking machine based on PLC and LIM

针对木材加工过程中工作强度大、工作风险高、加工精度低以及操作复杂等问题,设计研发了一台大推力直线感应电动机(LIM),并采用可编程逻辑控制器(PLC)实现了整个木材加工过程中的复杂功能,最终提出并设计了一种木材加工自动送料机。该系统利用直线感应电机驱动工作台的运动实现了木材切割,采用伺服电机控制木材切割厚度方向的进给,并采用PLC分别控制直线电机和伺服电机实现了木材加工中的变速切割,同时通过PLC与人机交换界面通讯实现了系统的参数设置与显示等功能。实际运行结果表明,该系统不仅降低了劳动强度,减小了人工助力;另一方面,相比于传统的伺服电机加丝杆结构,该系统具有可靠性更高、寿命更长、使用更灵活等优点。

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 humancomputer 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 hy a servo motor through a ball-screw mechanism.