HYDRAULIC DRIVE MECHANISM OF A MACHINE TOOL TABLE

Pump 1 delivers fluid under pressure through starting valve 3 to a groove of the spool in directional valve 4. From here a part of the fluid is delivered through ball check valve 5 to rotary actuator 6, turning its shaft clockwise. The remainder of the fluid is delivered to the left end of cylinder 7, moving piston 8 to the right. Fluid from the exhaust chamber of actuator 6 and the right end of c…