JB型家用缝纫机机加工组合机床的PLC控制

PLC control of the modular machine tool of model JB domestic sewing machines

对JB型家用缝纫机机加工组合机床实施PLC控制 ,因机床的输入点较多 ,对PLC采用了输入公共端切换的方法来扩充输入点数 ,机床正常控制的输入点置于一条公共线上 ,机床点动调整控制的输入点通过组合开关切换到另一条公共线上。作为PLC控制的应用实例 。

PLC control is to be applied to the modular machine tool of Model JB domestic sewing machine. The machine tool has many input points,but the number of them can be increased by PLC which adopts the way of the transfer of input public ends. The input points for normal controlled of the machine tool lie on one common line, and input points of the jog motions can be transfered to another common line by a transfer switch. The article is to demonstrate the process of designing it as an applied example of PLC control.