IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0917647
(2006-12-21)
|
등록번호 |
US-8512103
(2013-08-20)
|
국제출원번호 |
PCT/US2006/048882
(2006-12-21)
|
§371/§102 date |
20071214
(20071214)
|
국제공개번호 |
WO2007/106169
(2007-09-20)
|
발명자
/ 주소 |
- Dovel, Daniel T.
- DeLorenzo, Christopher T.
- Miner, Steven J.
|
출원인 / 주소 |
- Professional Tool Manufacturing, LLC
|
대리인 / 주소 |
Hall Estill Attorneys at Law
|
인용정보 |
피인용 횟수 :
0 인용 특허 :
20 |
초록
▼
A tool sharpening assembly (100) suitable for sharpening cutting tools (140,350,366,546,562). In some embodiments, a wedge-shaped port is formed between a rotational first abrasive surface (160,262) and a stationary second abrasive surface (162,264) to sharpen a distal cutting edge (146) of a cuttin
A tool sharpening assembly (100) suitable for sharpening cutting tools (140,350,366,546,562). In some embodiments, a wedge-shaped port is formed between a rotational first abrasive surface (160,262) and a stationary second abrasive surface (162,264) to sharpen a distal cutting edge (146) of a cutting tool (140,230,546). In other embodiments, a cooling mechanism (136,326,330,334,338) actively draws heat generated during a sharpening operation from a tool (140) and through a tool support structure (170,234,328,332) contactingly supporting the tool, in further embodiments, a rotatable abrasive slotted disc (364) comprises at least one inspection aperture (372) formed from an interior sidewall (390) with upper and lower leading and trailing edges (396,398,400,402) of non-uniform separation distance. In other embodiments, a cylindrical drum abrasive member (572) is provided with an associated stationary support plate (574). In further embodiments, a grinding wheel (580,600) is formed of a substrate (582,602) and a plurality of abrasive layers (584,586,592,612,614) adhered thereto.
대표청구항
▼
1. An apparatus comprising a rotatable first abrasive surface adjacent a non-rotatable second abrasive surface to form a wedge-shaped port, the respective first and second abrasive surfaces configured for sliding contacting engagement of a back surface of a tool along the second abrasive surface as
1. An apparatus comprising a rotatable first abrasive surface adjacent a non-rotatable second abrasive surface to form a wedge-shaped port, the respective first and second abrasive surfaces configured for sliding contacting engagement of a back surface of a tool along the second abrasive surface as the second abrasive surface is held in a non-moving, stationary relation to bring a distal surface of the tool into a limit stop abutment against the first abrasive surface during rotation of the first abrasive surface about a central axis and sharpen a cutting edge of the tool between the back and distal surfaces. 2. The apparatus of claim 1, wherein the first abrasive surface is characterized as a disc-shaped surface rotated in a selected rotational direction adjacent to and in non-contacting relation with the second abrasive surface, and the second abrasive surface is characterized as a stationary, rectangular flat surface, wherein the central axis about which the first abrasive surface rotates does not intersect the second abrasive surface. 3. The apparatus of claim 1, further comprising an adjustment mechanism to selectively adjust an intervening angle between the first and second abrasive surfaces. 4. The apparatus of claim 1, wherein the first abrasive surface is characterized as an abrasive surface of a rotatable disc rotated by a motor at a selected rotational velocity, and wherein the second abrasive surface is characterized as an abrasive surface of a ramp structure supported adjacent the disc. 5. The apparatus of claim 1, wherein the respective first and second abrasive surfaces are further configured to facilitate retraction of the distal surface of the tool away from the first abrasive surface by sliding contacting engagement of the back surface along the second abrasive surface to remove burring generated along the cutting edge formed responsive to contacting engagement of the distal surface against the first abrasive surface. 6. The apparatus of claim 1, further comprising a fence assembly which adjustably moves a support arm adjacent the second abrasive surface to provide a longitudinally extending guide to support a side of the tool during repetitive honing movements of the back surface against the second abrasive surface toward and away the first abrasive surface. 7. The apparatus of claim 1, wherein the first abrasive surface comprises a layer of selected grit affixed to a rotatable disc. 8. The apparatus of claim 7, in which a second layer of selected grit is affixed to an outer circumferentially extending surface of the rotatable disc. 9. The apparatus of claim 1, in which the first abrasive surface is characterized as an abrasive surface of a disc rotated about a central axis by a motor, the apparatus further comprising a third abrasive surface adapted for rotation about the central axis to sharpen a second tool thereagainst, the apparatus further comprising a support surface to support the second tool adjacent the third abrasive surface. 10. The apparatus of claim 1, further comprising an active cooling mechanism coupled to the second abrasive surface to draw heat from the tool and through the second abrasive surface. 11. The apparatus of claim 1, in which the first abrasive surface is disposed on a disc rotatable by a motor about a disc rotation axis, the disc comprising a plurality of angularly spaced apart inspection ports that extend through a thickness of the disc arrayed in a direction parallel to the disc rotation axis, the first abrasive surface formed from a layer of abrasive material affixed to the disc, the layer of abrasive material having a corresponding plurality of apertures nominally aligned with the inspection ports. 12. The apparatus of claim 1, in which the tool is characterized as a chisel and the apparatus further comprises an adjustment mechanism adapted to adjust a non-orthogonal angle between the first and second abrasive surfaces to match a corresponding angle between the back surface and the distal surface of the chisel. 13. An apparatus comprising a motor which rotates a rotational first abrasive surface adjacent a stationary, non-rotatable second abrasive surface, the second abrasive surface extending at a non-orthogonal angle with respect to the first abrasive surface to form a sharpening port adapted to contactingly receive a back surface of a tool in contacting engagement along the second abrasive surface and to bring a distal surface of the tool into a limit stop abutment against the first abrasive surface to sharpen a cutting edge of the tool between the back and distal surfaces, the stationary, non-rotatable second abrasive surface supported adjacent and in non-contacting relation to the first abrasive surface to maintain a gap therebetween of fixed width irrespective of a location of the tool within the sharpening port. 14. The apparatus of claim 13, in which the sharpening port is further adapted to facilitate contacting sliding retraction of the back surface of the tool along the second abrasive surface away from the first abrasive surface to remove burring along the cutting edge of the tool resulting from said limit stop abutment. 15. The apparatus of claim 13, further comprising an adjustment mechanism to selectively adjust the intervening non-orthogonal angle between the first and second abrasive surfaces to nominally match an angle of the tool between the back and distal surfaces. 16. The apparatus of claim 13, further comprising a fence assembly which adjustably moves a support arm adjacent the second abrasive surface to provide a longitudinally extending guide to support a side of the tool during repetitive honing movements of the back surface against the second abrasive surface toward and away from the first abrasive surface. 17. The apparatus of claim 13, wherein the first abrasive surface comprises a layer of selected grit affixed to a rotatable disc rotated by the motor, the second abrasive surface having a rectilinear shape with a straight leading edge adjacent the first abrasive surface to define said gap therebetween. 18. The apparatus of claim 13, further comprising a housing which encloses the motor, wherein a motor shaft extends from the motor and through the housing to support a disc, the first abrasive surface disposed on the disc in facing relation to the motor. 19. The apparatus of claim 13, further comprising an active cooling mechanism coupled to the second abrasive surface to draw heat from the tool and through the second abrasive surface. 20. An apparatus comprising: a housing which encloses a motor;a disc adapted for rotation by the motor, the disc having a first abrasive surface in facing relation to the motor; anda sharpening port coupled to the housing adjacent the first abrasive surface and comprising a second abrasive surface supported by the housing and extending at a non-orthogonal angle with respect to the first abrasive surface in non-contacting relation thereto, the sharpening port adapted to receive a tool which, when a back surface of the tool slidingly contactingly engages the second abrasive surface through advancement of the tool by a user, comes into a limit stop abutment with the rotating first abrasive surface and which, when retracted by said user, the back surface of the tool slidingly contactingly engages the second abrasive surface to remove burring from a cutting edge of the tool formed by the first abrasive surface, the second abrasive surface remaining stationary during said sliding contacting engagement of the back surface of the tool thereagainst. 21. The apparatus of claim 20, in which the sharpening port comprises an adjustment mechanism to selectively adjust the non-orthogonal angle between the first and second abrasive surfaces to match an angle of the tool between the back surface and a distal surface between which the cutting edge of the tool is disposed. 22. The apparatus of claim 20, wherein the second abrasive surface is characterized as an abrasive surface of a ramp structure supported by the sharpening port adjacent the disc. 23. The apparatus of claim 20, wherein the respective first and second abrasive surfaces are further configured to facilitate retraction of the distal surface of the tool away from the first abrasive surface by sliding contacting engagement of the back surface along the second abrasive surface. 24. A cutting tool sharpener apparatus for sharpening a tool having a tool back surface and a distal cutting surface forming a cutting edge, the apparatus comprising: a rotatable disc shaped first abrasive surface adjacent a non-rotatable flat rectilinearly shaped second abrasive surface to form a wedge-shaped port, the first abrasive surface rotated in a selected rotational direction adjacent to and in non-contacting relation with the second abrasive surface;the first and second abrasive surfaces configured for sliding contacting engagement of the tool back surface along the flat second abrasive surface to bring the distal cutting surface into limit stop abutment against the first abrasive surface to sharpen the cutting edge between the tool back surface and the distal cutting surface. 25. The apparatus of claim 24, further comprising an adjustment mechanism to selectively adjust an intervening angle between the first and second abrasive surfaces. 26. The apparatus of claim 25, wherein the first abrasive surface is rotated by a motor at a selected rotational velocity, and wherein the second abrasive surface is an abrasive surface of a ramp structure. 27. The apparatus of claim 26, wherein the respective first and second abrasive surfaces are configured to facilitate retraction of the distal cutting surface of the tool away from the first abrasive surface by sliding contacting engagement of the tool back surface along the second abrasive surface. 28. The apparatus of claim 27, further comprising a fence assembly having a support arm which adjustably moves adjacent the second abrasive surface to provide a longitudinally extending guide to support a side of the tool during repetitive honing movements of the tool back surface against the second abrasive surface toward and away from the first abrasive surface. 29. The apparatus of claim 28, wherein the first abrasive surface comprises a layer of selected grit affixed to a rotatable disc. 30. The apparatus of claim 29, in which a second layer of selected grit is affixed to an outer circumferentially extending surface of the rotatable disc. 31. The apparatus of claim 30, further comprising an active cooling mechanism coupled to the second abrasive surface to draw heat from the tool through the second abrasive surface. 32. The apparatus of claim 31, in which the first abrasive surface is disposed on a disc rotatable by a motor about a disc rotation axis, the disc comprising a plurality of angularly spaced apart inspection ports that extend through a thickness of the disc arrayed in a direction parallel to the disc rotation axis, the layer of abrasive material having a corresponding plurality of apertures nominally aligned with the inspection ports.
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