Steady rest for grinder

Abstract

Abstract THE APPARATUS OF THIS DISCLOSURE RELATES TO STEADY REST ACTUATING MEANS OF THE TYPE WHICH INCLUDES A PRESSURE ACTUATED FLOATING WEDGE IN ENGAGEMENT WITH THE STEADY REST PLUNGER. THE WEDGE IS SHIFTED IN ONE DIRECTION BY A HYDRAULICALLY ACTUATED PISTON TO ADVANCE THE PLUNGER AGAINST THE WORKPIECE. IT IS ACTUATED IN THE OPPOSITE DIRECTION FOR RESETTING BY ANOTHER HYDRAULICALLY OPERATED PISTON. DURING THE GRINDING OPERATION, THE PISTON IS HELD AGAINST THE WEDGE BY PRESSURE SUFFICIENT TO PREVENT DEFLECTION OF THE WORK BY THE ADVANCE OF GRINDING WHEEL. AS INITIALLY SET UP, WHEN THE PLUNGER IS IN CONTACT WITH THE FINISHED DIAMETER ON THE WORKPIECE, THERE IS SOME CLEARANCE BE- TWEEN THE RESET PISTON AND THE HEAD OF THE CYLINDER. AS THE STEADY REST SHOW WEARS, THE ACTUATING WEDGE WILL MOVE FARTHER TO THE RIGHT TO ADVANCE THE PLUNGER TO COMPENSATE FOR SUCH WEAR. THE CLEARANCE BETWEEN THE REST PISTON AND THE HEAD OF THE CYLINDER PERMITS THE MOVEMENT OF THE WEDGE FOR THIS COMPENSATION. THE LOWER STEADY REST SHOE IS ACTUATED IN THE SAME MANNER EXCEPT A HIGHER PRESSURE IS APPLIED TO THE ACTUATING PISTON TO OVERCOME ANY SAG IN THE WORKPIECE AND TO HOLD THE WORKPIECE IN A VERTICAL POSITION BEST SUITED TO MAINTAIN ROUNDNESS OF THE WORKPIECE.

Inventors

• 👤 William P Flohr Jr

Bibliographic Details