Abstract
An apparatus comprising a cylindrical die holder base containing two recessed compartments, two different abrasive coated sharpen dies, a cylindrical index containing drill bit guide holes used to align drill bit dead center with the sharpening dies, male and female hemispheres on the index and the base to ensure alignment, a spring assembly allowing for separation of index from base while rotating index, a cylindrical safety guard used to cover index holes that are not aligned with sharpening dies, a locking knob used to lock and unlock index to base to allow or disallow rotation, and a radiused handle with a flat bottom used to safely hold drill sharpening device down on a flat surface while in use.
Claims
1. An apparatus for sharpening or honing drill bits comprising: a cylindrical die holder base containing two recessed compartments, each recessed compartment housing a sharpening die for sharpening drill bits, the die holder base further comprising a plurality of upwardly facing female alignment hemispheres; each of the sharpening dies comprising a pair of angled sharpening surfaces which intersect in a central portion of the sharpening die to form an upwardly facing sharpening recess configured to sharpen drill bit tips, wherein the sharpening surfaces of a first one of the sharpening dies are arranged at a first angle, the sharpening surfaces of a second one of the sharpening dies are arranged at a second angle which differs from the first angle, and wherein each of the sharpening surfaces on each of the sharpening dies are coated with an abrasive; a cylindrical index comprising a plurality of downwardly facing male alignment hemispheres and a plurality of index holes, wherein the male alignment hemispheres align and interlock with the female alignment hemispheres of the die holder base to align at least one of the index holes with one of the upwardly facing sharpening recesses of the sharpening dies; a cylindrical safety guard covering the index and comprising a locking knob access slot housing a locking knob having a threaded recess hole screwed onto an assembly alignment bolt, wherein the locking knob can be loosened or tightened to the assembly alignment bolt in order to allow or disallow rotation of the index relative to the base, wherein the safety guard covers index holes which are not aligned with the sharpening recesses of the sharpening dies and the locking knob access slot allows access to index holes which are aligned with the sharpening recesses of the sharpening die, and the safety guard further comprising an index access slot in an outer surface thereof, allowing access to the index for rotation of the index; a spring assembly between the safety guard and the index configured to maintain alignment of the male alignment hemispheres and female alignment hemispheres when the locking knob is loosened; and a handle attached to the safety guard and having a flat bottom surface configured to rest on a flat surface during use of the apparatus.
2. The apparatus according to claim 1, wherein the abrasive coating the sharpening surfaces is a diamond abrasive.
3. The apparatus according to claim 1, wherein an outer surface of the locking knob is knurled or splined to facilitate gripping while rotating the knob.
4. The apparatus according to claim 1, wherein a top surface and a rear surface of the handle is curved for comfort of a user while holding the apparatus.
Description
BRIEF DESCRIPTION OF THE SEVERAL VIEWS OF THE DRAWINGS
(1) FIG. 1 is an 3D view of the English version according to the embodiment of the present invention.
(2) FIG. 2 is an 3D view of the Metric version according to the embodiment of the present invention.
(3) FIG. 3 is a bottom view of the die holder base according to the embodiment of the present invention.
(4) FIG. 4 is a side view of the die holder base according to the embodiment of the present invention.
(5) FIG. 5 is the top view of the die holder base according to the embodiment of the present invention.
(6) FIG. 6 is the front view of the 118 sharpening die showing reference numbers to the angles and an abrasive coated sharpening surface (7) according to the embodiment of the present invention.
(7) FIG. 7 is the right side view of the 118 die of FIG. 6
(8) FIG. 8 is the rear view of the 118 die of FIG. 6.
(9) FIG. 9 is the left side view of the 118 die of FIG. 6
(10) FIG. 10 is the top view of the 118 die of FIG. 6
(11) FIG. 11 is the front view of the 135 sharpening die showing reference numbers to the angles and an abrasive coated sharpening surface according to the embodiment of the present invention.
(12) FIG. 12 is the right side view of the 135 die of FIG. 11
(13) FIG. 13 is the rear view of the 135 die of FIG. 11
(14) FIG. 14 is the left side view of the 135 die of FIG. 11
(15) FIG. 15 is the top view of the 135 die of FIG. 11
(16) FIG. 16 is the bottom view of the English index in one embodiment of the invention.
(17) FIG. 17 is the side view of the index of FIG. 16
(18) FIG. 18 is the top view of the index of FIG. 16
(19) FIG. 19 is the bottom view of the Metric index in one embodiment of the invention.
(20) FIG. 20 is the side view of the index of FIG. 19
(21) FIG. 21 is the top view of the index of FIG. 19
(22) FIG. 22 is the bottom view of the safety guard in one embodiment of the invention.
(23) FIG. 23 is the front view of the safety guard of FIG. 22
(24) FIG. 24 is the rear view of the safety guard of FIG. 22
(25) FIG. 25 is the top view of the safety guard of FIG. 22
(26) FIG. 26 is the bottom view of the locking knob in one embodiment of the invention.
(27) FIG. 27 is the side view of the locking knob of FIG. 26
(28) FIG. 28 is the top view of the locking knob of FIG. 26
(29) FIG. 29 is the bottom view of the handle according to one embodiment of the invention.
(30) FIG. 30 is the front view of the handle of FIG. 29 showing curved radius of the handle and the hole for the attachment bolt.
(31) FIG. 31 is the rear view of the handle of FIG. 29 showing the attachment hole, curved rear radius for comfort and the recessed hole for handle attachment bolt head.
(32) FIG. 32 is the side view of handle of FIG. 29 showing curved radius at the rear of the handle and a flat bottom.
(33) FIG. 33 is the top view of the handle of FIG. 29 showing front and rear curved radius.
DETAILED DESCRIPTION OF PREFERRED EMBODIMENT
(34) The inventors provide a unique drill bit sharpening that needs no electrical power as to sharpen a drill bit or a need to make multiple adjustments to correctly set the degree of the sharpening angle for the drill bit to be sharpen. Instead the compound angled abrasive coated sharpening surface, allowing a simple rotation of the index to either the 118 sharpening die or 135 sharpening die of which degree of the drill bit to be sharpen.
(35) FIG. 1 a complete 3D view of the English 29 hole version according to an embodiment of the invention. However, the 29 hole English version should not be construed as the limitation of the invention. This drill bit sharpener can range from one English drill bit guide hole index (50) to whatever range of index drill bit guides holes as to be used in this example.
(36) FIG. 2 a complete 3D view of the Metric 25 hole version according to the embodiment of the present invention. However, the 25 hole Metric version should not be construed as the limitation of the invention. This drill bit sharpener can range from one Metric drill bit guide hole index (54) to whatever range of index drill bit guides holes are to be used in this example.
(37) FIG. 3 a 25-29 Metric/English Die Holder Base (49) bottom view. main alignment hole (16) holds the main parts of the sharpener assembly together of FIG. 1. There are two holes (17) that are used to easily push the die removal tool through to replace the abrasive coated surface sharpening dies. There is a recessed hex shaped hole (18) used to hold the head of the main assembly alignment bolt (1) from turning. The base (49), alignment hole (16), die removal holes, (17) and the hex shaped alignment bolt holder (18) may change diameter according to number of holes the index (50) contains in one embodiment of the invention.
(38) FIG. 4 a 25-29 Metric/English Die Holder Base (49) side view. A threaded hole (52) for handle attachment bolt (44). Height and width may vary due to different number of drill bit guide holes according to an embodiment of the invention.
(39) FIG. 5 a 25-29 Metric/English Die Holder Base (49) top view. The 118 recessed die holder (3) used to hold an abrasive coated surface sharpening die, for a 118 degree drill bit (4). Recessed die holder (9) used to hold an abrasive coated surface sharpening die for a 135 degree drill bit (10), the assembly alignment hole (16), the die removal holes (17) used in conjunction with a die removal tool to easily remove worn dies, a circular pattern of female hemispheres (19) used to align the index guide holes to the 118 abrasive coated surface sharpening die, (4) or the 135 abrasive coated surface sharpening die, (10) in one embodiment of the invention. Number of hemispheres may change according to the different number of drill bit guide holes in the index of FIG. (16) and FIG. 19.
(40) FIG. 6 a 118 Sharpening Die (4) front view. This is one of the key parts of the invention, two of four angles (8) that makes this drill bit sharpener unique and an abrasive coated sharpening surface (15) as in one embodiment of the invention.
(41) FIG. 7 a 118 Sharpening Die (4) Right Side View. an abrasive coated sharpening surface (15) used for sharpening of the drill bit. (5) and (6) are compound angles to ensure precise drill bit sharpening as in one embodiment of the invention.
(42) FIG. 8 a 118 Sharpening Die (4) rear view. This is one of the key parts of the invention, two of four angles of a compound angled die (8) and an abrasive coated sharpening surface (15) as in one embodiment of the invention.
(43) FIG. 9 a 118 Sharpening Die (4) Left Side View. an abrasive coated sharpening surface (15) used for sharpening of a drill bit. (5) and (6) are compound angles to ensure precise drill bit sharpening as in one embodiment of the invention.
(44) FIG. 10 a 118 Sharpening Die (4) Top View showing the two abrasive coated sharpening surface (15) used for the sharpening of the drill bit according to in one embodiment of the invention.
(45) FIG. 11 a 135 Sharpening Die (10) front view. This is one of the key parts of the invention that makes this drill bit sharpener unique, two of four angles (14) and an abrasive coated sharpening surface (15) in one embodiment of the invention.
(46) FIG. 12 a 135 Sharpening Die (10) Right Side View. an abrasive coated sharpening surface (15) used for sharpening of a drill bit. (11) and (12) are compound angles to ensure precise drill bit sharpening in one embodiment of the invention.
(47) FIG. 13 a 135 Sharpening Die (10) Rear View. This is one of the key parts of the invention, two of four compound angles (14) and an abrasive coated or sharpening surface (15) in one embodiment of the invention.
(48) FIG. 14 a 135 Sharpening Die (10) Left Side View. an abrasive coated sharpening surface (15) used for sharpening of the drill bit. (11) and (12) are compound angles to ensure precise drill bit sharpening in one embodiment of the invention.
(49) FIG. 15 a 135 Sharpening Die (10) Top View showing the two abrasive coated surface (15) used for the sharpening of the drill bit in one embodiment of the invention.
(50) FIG. 16 a 29 Hole English Index (50) Bottom View showing 29 index guide holes (21) ranging from 1/16-?. Main assembly alignment hole (16) and male hemispheres (22) that interlock with the die base female hemispheres (19) to ensure perfect alignment of index guide holes (21) to the 118 abrasive coated sharpening die (4) or 135 abrasive coated surface sharpening die (10) in one embodiment of the invention.
(51) FIG. 17 a 29 Hole English index side view (50) Side View showing male hemispheres (22) Height and width can vary due to the different number of drill bit guide holes (21) in the index in one embodiments of the invention.
(52) FIG. 18 a 29 Hole English Index (50) Top View showing 29 drill bit guide holes (21) ranging from 1/16-?. Main assembly alignment bolt hole (16) and a recessed hole to house spring assembly reference numbers (24) washers, (25) spring and (26) nut located in FIG. 1 according to an embodiment of the invention.
(53) FIG. 19 a 25 Hole metric Index (54) Bottom View showing 25 drill bit guide holes (55) ranging from 1 mm to 13 mm in 0.5 mm increments. Main assembly alignment bolt hole (16) and male hemispheres (22) that interlock with the die base (49) female hemispheres (19) to ensure precise alignment of index guide holes (55) to the 118 abrasive coated surface sharpening die (4) or 135 abrasive coated surface sharpening die (10) in one embodiment of the invention.
(54) FIG. 20 a 25 Metrix Index Base (54) Side View showing male hemispheres (22). Die base height and width can vary due to the different number of drill bit guide holes in the index in one embodiment of the invention.
(55) FIG. 21 a 25 Hole Metric Index (54) Top View showing 25 drill bit guide holes (21) ranging from 1 mm-13 mm in 0.5 mm increments. Main assembly alignment bolt hole (16) and a recessed hole (23) used to house part of the spring assembly (24) washers, (25) spring and (26) nut in one embodiment of the invention.
(56) FIG. 22 a 25-29 Hole Metric/English Safety Guard (56) Bottom View showing Die and locking nut access slot (34) and safety guard wall width (59) the inner (57) and the outer (58). Guard can change dimensions according to size of base used in one embodiment of the invention.
(57) FIG. 23 a 25-29 Hole Metric/English Safety Guard (56) Front View showing index access slot (35) to allow access to knurled side of index (50) of FIG. 17 as to rotate to the proper size drill bit guide hole (21) to the correct abrasive coated era file-like surface sharpening die (4) of FIG. 6 or (10) of FIG. 11. Holes (39) is for safety guard attachment to die holder base with screws (40) and Hole (41) for bolt to attach handle to die holder base in one embodiment of the invention.
(58) FIG. 24 a 25-29 Hole Metric/English Safety Guard (56) Rear View showing Index access slot (35) and holes (39) for safety guard attachment to die base in one embodiment of the invention.
(59) FIG. 25 a Hole Metric/English Safety Guard (56) Top View showing Index drill guide holes and locking knob access slot (34) in one embodiment of the invention.
(60) FIG. 26 an Index Locking Knob (27) showing knurled edges (29), recessed hole (31) to allow spring assembly and lock nut clearance. Threaded recessed hole (32) allow locking knob to screw onto assembly alignment bolt (1) as to lock Index, in one embodiment of the invention.
(61) FIG. 27 an Index Locking Knob (27) Side View Showing knurled edges (29) for easy grip of knob to rotate and lock index in position and a rounded top (28) for comfortably holding knob in one embodiment of the invention.
(62) FIG. 28 an Index Locking Knob (27) Top View Showing rounded top (28) for comfortably holding knob in one embodiment of the invention.
(63) FIG. 29 a 25-29 Metric/English handle (42) Bottom View Showing a rounded rear edge (46) for comfort of the hand while handling and a radius front edge (45) to match radius of safety guard which may change according to size of base used in one embodiment of the invention.
(64) FIG. 30 a Handle (42) Front View showing curved radius (46) of the handle and a hole (43) through the handle for the handle attachment bolt (44) of FIG. 1 and a flat bottom (48) in one embodiment of the invention.
(65) FIG. 31 a Handle (42) Rear View showing the handle attachment hole (43), curved rear radius (46) for hand comfort while holding the device, a counterbored of hole (42) to house the head of the handle mounting bolt in one embodiment of the invention.
(66) FIG. 32 a Handle (42) Side View showing curved radius (46) at the rear of the handle and a flat bottom (48) in one embodiment of the invention.
(67) FIG. 33 a Handle (42) Top View showing front curved radius (45) that mates with the safety guard (56) and rear curved radius (46) for comfort of the hand while holding the device in one embodiment of the invention.
(68) It will be apparent to one with skill in the art that the drill sharpening device may be provided using some or all the mentioned features without departing from the spirit and scope of the present invention.
(69) The embodiments described above are specific examples of a single broader invention that may have greater scope than any of the singular descriptions taught. There may be alterations made in the descriptions without departing from the spirit and scope of the present invention.
