OFF CENTER DRILLING ATTACHMENT

INSERT SHANK INTO TURRET UNTIL GEAR ON ATTACHMENT MESHES SMOOTHLY WITH DRIVE GEAR IN TURRET.  BE CERTAIN DRIVER GEAR HAS CORRECT NUMBER OF TEETH AS SHOWN BELOW:

TIGHTEN CLAMP BOLT SECURELY AND CHECK TO BE SURE THAT THE SPINDLE REVOLVES FREELY.

MOUNT DRILL IN SPINDLE OF ATTACHMENT WITH A GOOD CONCENTRIC DRILL BUSHING.  LOOSEN PART #10 PIVOT SCREW AND PART #11 LOCKING SCREW SLIGHTLY AND OFFSET PART #4 BODY UNTIL DESIRED OFFSET IS OBTAINED.  (FOR MAXIMUM ADJUSTMENT PART #11 LOCKING SCREW CAN BE REMOVED AND PLACED IN EITHER OF THE TWO HOLES TAPPED IN PART #4 BODY IN LINE WITH THE ELONGATED ADJUSTMENT SLOT IN PART #3 SHANK).  THEN #10 AND #11 SCREWS ARE TIGHTENED.

UNIT IS NOW READY FOR DRILLING OFFSET HOLES.

IMPORTANT: MACHINE SPINDLE MUST BE STOPPED DURING DRILLING OPERATION.

MORE THAN ONE R&L OFF CENTER DRILLING ATTACHMENT MAY BE USED FOR DRILLING AND REAMING, OR FOR 2 OR MORE HOLES IN DIFFERENT LOCATIONS.

FOR ACCURATE LOCATIONS OF HOLES WE RECOMMEND, WHEN POSSIBLE, A DRILL JIG MOUNTED IN THE CROSS SLIDE CIRCULAR FORM TOOL POST WHICH CAN LOCATE AGAINST THE O.D. OF THE PIECE BEING DRILLED AND WITH PROPERLY LOCATED DRILL BUSHINGS.

THIS DRILL JIG IS ADVANCED AGAINST THE PART FROM THE CROSS SLIDE AND KEPT IN POSITION DURING THE DRILLING OPERATIONS.

END MILLING CAN ALSO BE PERFORMED, PREFERABLY WITH A DRILL JIB TO PREVENT WALKING.

HOLLOW MILLING OF AN ECCENTRIC HUB CAN ALSO BE PERFORMED WITHIN THE LIMITS OF THE ATTACHMENT, HOWEVER, IF TOLERANCES OR FINISH ARE IMPORTANT IT IS NECESSARY TO USE A ROUGH AND FINISH HOLLOW MILL.