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轧辊双丝埋弧自动堆焊机,控制原理如图1所示。该控制系统是由机头运动控制系统和送丝控制系统组成。机头运动指两个机头同时上下的垂直运动和改变二者之间距离的水平运动,两种运动不能同时进行,因此,采用两台驱动电机公用一套无级调节的控制系统。两套送丝系统是相同的,又是相互独立的,但可以统一起动和统一停止。下面着重讨论送丝控制系统。 1.送丝控制原理及稳定性分析送丝控制系统由电源、弧压测量、触发器、可控硅主电路、电动机、自动控制线路组
Roll double-wire submerged arc automatic welding machine, the control principle shown in Figure 1. The control system is composed of head movement control system and wire feeding control system. Head movement refers to both the vertical movement of the head simultaneously up and down and to change the distance between the two horizontal movement, the two movements can not be carried out at the same time, therefore, the use of two sets of common motor drive a stepless control system. Two sets of wire feeding system are the same, but also independent of each other, but can be a unified start and stop. The following discussion focuses on wire feed control system. 1. Wire feeding control principle and stability analysis Wire feeding control system consists of power supply, arc voltage measurement, trigger, SCR main circuit, motor, automatic control circuit group