T68型卧式镗床电气控制系统的PLC改造和调试

摘要

本文介绍了利用PLC改造T68型卧式镗床的电气控制系统的思路和方法,对T68卧式镗床主轴电动机M1的正反转的点动控制,正反转高速控制,正反转停车制动控制,主轴变速控制和对镗床控制系统的主电路、辅助电路和控制电路等电路进行了设计和调试。改造后车床运行稳定,降低了故障率,提高了生产效率。%This paper introduces the ideas and methods to transform electrical control system of T68 horizontal boring machines with PLC, and then designs and debugs the posi-nega rotation jog control, posi-nega rotation high-speed control, posi-nega braking control and spindle variable speed control of T68 spindle motor M1, and also designs and debugs the main circuit, aux. circuit and control circuit and boring machine control system. After reconstruction, the lathe operation is stable, and reduces failure rate and improves the production efficiency.