Drill bit sharpening tool

A drill bit sharpening system (100) using a typical bench grinder (200) with a sharpening table (300) for refurbishing a dull or broken drill bit (110), wherein said system (100) comprises:

• (a) a bench grinder (200) having a motor (210) operatively coupled to a rotating shaft (220), wherein the rotating shaft (220) comprises a sharpening wheel (230) disposed on a shaft end (222), wherein the bench grinder (200) further comprises a generally planar positioning table (240) disposed in an anterior position thereon with respect to a sharpening wheel face (232);
• (b) a generally planar rigid sharpening table (300) having a top table surface (310), a bottom table surface (320) opposite to and generally parallel with the to table surface (310), a first table edge (330), a third table edge (340) proximal to the sharpening wheel face (232), a fifth table edge (345), a sixth table edge (350), a fourth table edge (360), and a second table edge (370) opposite to and parallel with the sixth table edge (350) and the fourth table edge (360);
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• (c) a positioning component (400) disposed on the table top surface (310) comprising an elongated planar wall component (410) having a first wall component edge (411) and a second wall component edge (412), wherein the positioning component (400) further comprises an elongated planar floor component (420) having a first floor component edge (421) and a second floor component edge (422), wherein the first floor component edge (421) is perpendicularly attached to the second wall component edge (412), wherein the positioning component (400) comprises a generally “L” shaped cross-section in a transverse plane;
• wherein for use, the sharpening table (300) is attached to the positioning table (240) of the bench grinder (200), wherein the energized motor (210) rotates the sharpening wheel (230) via the rotating shaft (220), wherein for operation the drill bit (110) is placed against the positioning component (400) on the sharpening table (300) and held against the rotating sharpening wheel face (232) for shaping, wherein the drill bit 110 is manually rotated against the sharpening wheel face (232) via a users fingers on the drill bit (110);
• wherein the system (100) comprises a spacer block (620) for adjusting a planar elevation of the sharpening table (300) with respect to the positioning table (240), wherein the angle of the sharpening wheel face (232) with respect to the drill bit (110) is set to a predetermined value based on an elevation of the sharpening table (300), wherein the spacer block (620) is disposed on the bottom table surface (320), wherein the spacer block (620) comprises a predetermined thickness.

A drill bit sharpening system (100) using a typical bench grinder (200) with a removable sharpening table (300) for refurbishing a dull or broken drill bit (110), wherein said system (100) comprises:

• (a) a bench grinder (200) having a motor (210) operatively coupled to a rotating shaft (220), wherein the rotating shaft (220) comprises a sharpening wheel (230) disposed on a shaft end (222), wherein the bench grinder (200) further comprises a generally planar positioning table (240) disposed in an anterior position thereon with respect to a sharpening wheel face (232), wherein the motor (210) is operatively connected to a power switch (250) and a power source (260);
• (b) a generally planar rigid sharpening table (300) having a top table surface (310), a bottom table surface (320) opposite to and generally parallel with the top table surface (310), a first table edge (330), a third table edge (340) proximal to the sharpening wheel face (232), a fifth table edge (345), a sixth table edge (350), a fourth table edge (360), and a second table edge (370) opposite to and parallel with the sixth table edge (350) and the fourth table edge (360), a rounded recessed edge (380) adjoining the first table edge (330) and the sixth table edge (350), wherein the bottom table surface (320) comprises a table mount (390) disposed thereon for removably and rigidly attaching to the positioning table (240);
• (c) a pivotally mounted positioning component (400) disposed on the table top surface (310) comprising an elongated planar wall component (410) having a first wall component edge (411), and a second wall component edge (412), wherein the positioning component (400) further comprises an elongated planar floor component (420) having a first floor component edge (421) and a second floor component edge (422), wherein the first floor component edge (421) is perpendicularly attached to the second wall component edge (412), wherein the positioning component (400) comprises a generally “L” shaped cross-section in a transverse plane, wherein the positioning component (400) comprises a pivoting means (430) centrally disposed therein for rotatably mounting to a top table surface (310);
• wherein the pivoting means (430) is disposed on the top table surface (310) on a vertical plane, Plane A (500), about midway between the first table edge (330) and the third table edge (340), wherein, the pivoting means (430) is disposed on the top table surface (310) on a vertical plane, Plane B (510), about midway between the sixth table edge (350) and the fourth table edge (360), wherein Plane B (510) is disposed parallel with a vertical plane, Plane C (530), on which the sharpening wheel (230) is disposed, wherein Plane B (510) is perpendicular to Plane A (500), wherein the pivoting means (430) is disposed on the top table surface (310) at an intersection of Plane A (500) and Plane B (510), wherein, the positioning component (400) rotates about the pivoting means (430) in a horizontal plane;
• wherein the rounded recessed edge (380) is disposed on a radius, Radius E (520), wherein Radius E (520) comprises a center disposed at an intersection of Plane A (500) and Plane B (510), wherein a plane, Plane D (535), is disposed perpendicular to Plane A (500), Plane B (510), and Plane C (530), wherein, the top table surface (310) lies on Plane D (535), wherein, Plane D (535) is divided into four quadrants by intersecting planes, Plane A (500) and Plane B (510), wherein an intersection of the fifth table edge (345) and the second table edge (370) lies in a first quadrant (540), wherein an intersection of the sixth table edge (350) and the third table edge (340) lies in a second quadrant (550), wherein, the rounded recessed edge (380) lies in a third quadrant (560), wherein an intersection of the first table edge (330) and the second table edge (370) lies in a fourth quadrant (570);
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• (d) a spacer block (620) for adjusting a planar elevation of the sharpening table (300) with respect to the positioning table (240), wherein the angle of the sharpening wheel face (232) with respect to the drill bit (110) is set to a predetermined value based on an elevation of the sharpening table (300), wherein the spacer block (620) is disposed on the bottom table surface (320), wherein the spacer block (620) comprises a predetermined thickness;
• wherein for use, the sharpening table (300) is attached to the positioning table (240) of the bench grinder (200) (optionally via the spacer block 620) via the table mount (390), wherein the bench grinder (200) is activated via the power switch (250) and the power source (260), wherein the motor (210) rotates the sharpening wheel (230) via the rotating shaft (220), wherein for operation, the drill bit (110) is placed against the positioning component (400) on the sharpening table (300), and held against the rotating sharpening wheel face (232) for shaping, wherein the drill bit (110) is manually rotated against the sharpening wheel face (232) via a users fingers on the drill bit (110) extending past the rounded recessed edge (380).