HYDRAULIC DRIVE MECHANISM OF A MACHINE TOOL TABLE

Gear pump 4 delivers fluid at constant pressure to the left end of cylinder 1, and piston 2, together with machine tool table 3, travels to the right. If flow-control valve 7 of pipeline a is fully open and flow-control valve 6 of pipeline b is closed, the total output of pump 4 is delivered to cylinder 1 and table 3 travels at maximum speed. If valve 7 is closed and valve 6 is open, valve spool 5…