When piston 1 is moved to the right by the action of fluid delivered to the left end of cylinder 2 in which piston 1 travels, fork 3 turns about fixed axis D. Cylinder 2 turns about fixed axis A. At this, sleeve 4 is shifted to the left by trunnions 5 and blocks 6 that prevent rotation of sleeve 4. The inner member of the sleeve is mounted on tube 7 which rotates together with the spindle and chuck 8 of the lathe. When sleeve 4 is shifted, tube 7 moves axially, sliding in bushings 9 and 10, mounted in the spindle unit. Mounted on the right end of the spindle is jaw chuck 8 which clamps workpiece 11 when tube 7 is moved to the left. The workpiece is released in the return stroke of piston 1. The tool for machining the rear end of the work is held in taper socket a of inner spindle 12 which passes through tube 7 inside the lathe spindle. Tool spindle 12 obtains its working feed from lever 13 which turns about fixed axis B. When lathe saddle 15 travels to the left, its stop d runs up against feed rod 14. This turns fork 13 and feeds tool spindle 12 to workpiece 11. Upon return travel of saddle 15 (to the right), tool spindle 12 is retracted to its initial position by the action of spring 16 on rod 14. Screw b of rod 14 serves to adjust the length of the stroke of tool spindle 12.
$3983$LHP,FD$