Patent ID: 6171032
Filing Date: 2001-01-09
Classification: B23B,B23D,B26F,Y10T

Abstract:
An apparatus for forming a hole in a workpiece, comprising:a rotatable boring shaft in communication with a drive mechanism;a boring head secured to said boring shaft for rotating therewith and having a bottom surface, aligned generally parallel to the workpiece;a cutting blade that extends downwardly below said bottom surface of said boring head and is spaced away from an axis of rotation of said boring shaft, said cutting blade being angled with respect to said boring shaft axis of rotation as said blade enters the workpiece in order to cut a slug having a tapered edge;an alignment device for contacting the workpiece and aligning said cutting blade in order to cut out a slug of a predetermined shape in the workpiece; anda slug pin for piercing and retaining said slug after the hole has been formed in the workpiece.