| 摘要 |
<p>PURPOSE:To eliminate the trouble in working and improve practical-use performance by installing a means for drivin a coolant pump in priority over other instructions and a means for driving a coolant pump according to the M-code instruction. CONSTITUTION:An NC apparatus 1 is connected to a coolant discharge instruction relay M08Ry, coolant stop instruction relay M09Ry, and an M-code instruction completion relay MFRy. Further, the NC apparatus 1 is connected in succession, on one side, to an always opened switch MS1 fot driving a pump and a coolant discharge instruction switch M08SW through an M-code instruction completion switch MFSW. The NC apparatus 1 is connected, on the other, to an always closed switch MS1 for driving pump and a coolant stop instruction switch M09SW in succession. Further, a coolant instruction auxiliary relay CR1 is connected to an M-code instruction switch M09SW and an M-code instruction switch M08SW in succession, and connected to a self retaining switch CR1H.</p> |
