Patent ID: 9089905
Filing Date: 2015-07-28
Classification: B23B,Y10T

Abstract:
1. A rotary deburring tool comprising: a hollow body having an axis of rotation and comprising a bore parallel to the axis and a pin that is not parallel to the axis; a pilot holder comprising an opening at a forward end thereof and a piston portion slidably nested in said bore of said hollow body, said pilot holder being axially movable relative to said hollow body, wherein said piston portion of said pilot holder comprises a cylindrical bore that is partially closed at one end; a pilot comprising a proximal end that is received in said opening in said pilot holder and a longitudinal slot; a cutter blade comprising a shaft having a portion disposed inside said slot of said pilot, a pocket disposed near a distal end of said cutter blade, and a slot disposed near a proximal end of said cutter blade, said slot comprising first and second mutually opposing side edges disposed on opposite sides of said pin, wherein said pin in said slot blocks relative movement of said cutter blade in both axial directions, but does not block pivoting of said cutter blade about said pin; a cutter tip attached to and seated in said pocket of said cutter blade; a round nose plunger slidably nested in said cylindrical bore; and a spring disposed between said round nose plunger and said partially closed end of said piston portion of said pilot holder, wherein said spring is in a state whereby it urges said round nose plunger in a forward axial direction, and wherein said proximal end of said cutter blade comprises a fillet that is in contact with a portion of said round nose plunger which is not centered relative to said axis of rotation.