HYDRAULIC DRIVE MECHANISM OF A MACHINE TOOL TABLE WITH AUTOMATIC REVERSAL AND A VARIABLE-DISPLACEMENT PUMP

Fluid is drawn in from tank 1 throulgh suction pipe a to hydraulic pump 2 from where it enters delivery pipeline b. In the left-hand position (as shown) of lever 3, turning about fixed axis A, fluid from the delivery pipeline passes through valve 4 to the left end of cylinder 5, moving piston 6, piston rod 7 and table 8, attached to the piston rod, to the right. From the right end of cylinder 5, f…