摘要:
A multi-stage hand-held sharpener includes a handle with an outer grip surface, and a first sharpening stage incorporated into the handle having a first abrasive surface. The first sharpening stage is adapted to facilitate a primary sharpening operation by a user upon a tool responsive to the user contactingly advancing a cutting edge of the tool against the first abrasive surface. A second sharpening stage includes a guide surface which extends in a non-orthogonal direction adjacent a second abrasive surface to establish a reference angle. The second sharpening stage facilitates a secondary sharpening operation by the user upon the tool responsive to the user contactingly engaging a side of the tool with the guide surface to orient the tool at said reference angle, and advancing a cutting edge of the tool against the second abrasive surface while maintaining the tool at said presentation angle.
摘要:
Various embodiments of the present invention are generally directed to an apparatus for sharpening a cutting tool. A tensioner assembly applies a biasing force to a roller to maintain a selected tension in a belt and to facilitate translational displacement of the roller during deflection of the belt. In some embodiments, the tensioner assembly includes a shaft with an L-shaped groove with an elongated portion and an offset portion to facilitate transition of the roller between an extended position and a retracted position. In related embodiments, the tensioner assembly comprises a shaft with an elongated groove to facilitate tracking alignment of the belt on the roller. In further related embodiments, a guide housing is provided adjacent an abrasive medium with a guide slot and magnet to facilitate presentation of a cutting tool against the abrasive medium.
摘要:
Apparatus and method for sharpening a tool, such as a chisel. A sharpening guide applies a clamping force to secure the tool and advances a beveled leading edge surface of the secured tool against an abrasive surface to sharpen a cutting edge while the guide is in an upright orientation. An alignment plate nestingly receives the guide in an inverted orientation to align the tool prior to sharpening. During alignment, a back surface of the tool slidingly contacts an upper plate surface and the cutting edge contactingly abuts an alignment feature which projects from the plate surface. In some embodiments, the alignment feature comprises a removable alignment pin selectively insertable into a plurality of spaced apart apertures, each providing a final bevel angle for the sharpened tool.
摘要:
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.
摘要:
Method (300) and apparatus (100) for sharpening a cutting tool (114, 132, 204, 210, 216). A flexible abrasive belt (116, 116A, 116B, 162, 172) with a selected linear stiffness and an abrasive surface (128A, 128B) of selected abrasiveness level is driven (304) in a selected direction along a selected plane between a first support (122) and a second support (118). In some embodiments, the cutting tool is presented (306, 308) in contacting engagement against the abrasive surface to induce torsion of the belt (140, 144, 148) out of the selected plane to conform to a cutting edge (138, 168, 178, 207, 208, 213, 214, 215) of the cutting tool. In further embodiments, presentation of the cutting tool against the abrasive surface of the belt (306, 308) induces bending of the belt out of said selected plane at a radius of curvature (169, 179) determined in relation to said linear stiffness to shape a side surface (164, 166, 174, 176) of the cutting tool with said radius of curvature.
摘要:
Apparatus and method for sharpening a workpiece, such as a cutting tool. An abrasive disc is rotatable about a disc rotational axis and includes a plurality of spaced apart, radially disposed apertures extending therethrough from a first surface to an opposing second surface of the disc. The first surface is configured to facilitate sharpening of a workpiece by contacting engagement of the workpiece against an abrasive layer adjacent the first surface between adjacent first and second apertures of said plurality. The first surface further induces controlled axial displacement of the workpiece away from the disc as the second aperture approaches the workpiece during disc rotation. The first surface is preferably concave so as to extend into the disc between each adjacent pair of the apertures. Alternatively, the first surface is provided with different compressibilities to induce the controlled axial displacement of the workpiece.
摘要:
A multi-rod hand-held sharpener includes a handle with an outer grip surface for a hand of a user, a first abrasive rod having a first outer abrasive surface with a first abrasiveness level, and a second abrasive rod having a second outer abrasive surface with a second abrasiveness level different from the first abrasiveness level. At least one guide surface extends toward the first sharpening surface at a selected guide angle non-orthogonal to the first sharpening surface. The user contactingly engages a side of the tool against the guide surface and a cutting edge of the tool against the first abrasive surface, and then advances the side of the tool away from the guide surface and the cutting edge against the first abrasive surface while maintaining the tool at the selected guide angle. An optional second guide adjacent the second abrasive surface at a different angle facilitates micro-beveling.
摘要:
Method (300) and apparatus (100) for sharpening a cutting tool (114, 132, 204, 210, 216). A flexible abrasive belt (116, 116A, 116B, 162, 172) with a selected linear stiffness and an abrasive surface (128A, 128B) of selected abrasiveness level is driven (304) in a selected direction along a selected plane between a first support (122) and a second support (118). In some embodiments, the cutting tool is presented (306, 308) in contacting engagement against the abrasive surface to induce torsion of the belt (140, 144, 148) out of the selected plane to conform to a cutting edge (138, 168,178,207, 208, 213, 214, 215) of the cutting tool. In further embodiments, presentation of the cutting tool against the abrasive surface of the belt (306, 308) induces bending of the belt out of said selected plane at a radius of curvature (169, 179) determined in relation to said linear stiffness to shape a side surface (164, 166, 174, 176) of the cutting tool with said radius of curvature.
摘要:
Method and apparatus for facilitating sharpening of a tool. A tool holder is provided to present the tool for sharpening against an abrasive member, such as a grinding wheel. A moveable jaw member preferably engages a side of the tool to align the tool with a reference axis. The jaw member preferably supports an alignment finger which moves with the jaw member and which contactingly engages the tool to establish a desired angular orientation of the tool with respect to said axis. The tool preferably includes a flute surface and a cutting edge, and the alignment finger contacts the flute surface adjacent said cutting edge. The alignment finger is further preferably configured so that a distal end thereof is initially adjusted against the abrasive member, such as by a grinding operation, while the alignment member contactingly supports the tool.
摘要:
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.