Abstract: A sharpening guide for a dental tool is provided, with the dental tool having a handle, a working portion, and a shank extending between the handle and the working portion.

Abstract: A method for sharpening the cutting knives of a knife ring chipper, which includes a knife ring and a number of knife units, the units in turn containing knives and holding plates. The knife ring is removed from the knife ring chipper, the knife units of the knife ring chipper are removed from the knife ring and the knife units are disassembled. The dull knives are moved to a first buffer station and are stored and then moved to a grinder and sharpened. The sharpened knives are moved to a second buffer station and are stored, and the sharpened knives are then mounted onto holding plates in knife units. The knife units are incorporated into a knife ring and the knife ring is incorporated into a knife ring chipper.

Abstract: A dental tool sharpener is disclosed having a base. A grinding surface is rotatably attached to the base about a fixed axis, the axis of rotation being perpendicular to the base. a positioner is attached to the base and aligns a top face of a blade of a dental tool such that the top face is substantially perpendicular to the axis of rotation of the grinding surface. A gripper is attached to the base for grasping the dental tool and for transporting the dental tool from the positioner to the grinding surface while maintaining the top face substantially perpendicular to the axis of rotation of the grinding surface.

Abstract: A sharpening apparatus with substantially rigid sharpening wheels disposed substantially fixedly on a rotatable drive shaft. An edge of a blade inserted in a slot in the apparatus comes into contact with a sharpening surface on a sharpening wheel. A sliding block associated with that sharpening surface slidably yields to accommodate the inserted blade and applies a force on the blade towards the sharpening surface. The user may selectively adjust force on the blade to achieve more or less sharpening of the edge of the blade. The plurality of sharpening surfaces can offer different levels or degrees of sharpening.

Abstract: A grinding machine is designed as a multi-station grinding machine, which has two complete grinding stations. The grinding stations have grinding heads, which can be moved by means of appropriate positioning devices, for example compound table arrangements, and/or pivot tables, in relation to the saw blade. Positioning devices and arresting devices for the workpiece are furthermore parts of the grinding stations. The workpiece support is used for positioning the saw blades to the extent that their center axis is to be fixed in the grinding. The rotation of the saw blades around this center axis M, and the clamping in place of the saw blade in the respective rotated position for performing the grinding operation is the task of the respective units in the grinding stations.

Abstract: A dental tool sharpener is disclosed having a base. A grinding surface is rotatably attached to the base about a fixed axis, the axis of rotation being perpendicular to the base. a positioner is attached to the base and aligns a top face of a blade of a dental tool such that the top face is substantially perpendicular to the axis of rotation of the grinding surface. A gripper is attached to the base for grasping the dental tool and for transporting the dental tool from the positioner to the grinding surface while maintaining the top face substantially perpendicular to the axis of rotation of the grinding surface.

Abstract: An apparatus for use in sharpening a skate blade includes a handle and a cartridge connected to one end of the handle. The cartridge includes a casing and a sharpening blade. The sharpening blade has an arcuate cutting edge with a radius of curvature which corresponds to a radius of hollow of a skate blade to be sharpened. The casing at least partially defines a slot which has a thickness which corresponds to a thickness of the skate blade to be sharpened. The arcuate cutting edge on the sharpening blade extends across the bottom of the slot.

Abstract: A manual knife sharpener is provided with angle control structure. The structure includes a guide member having a guide surface which forms an angle with the abrasive surface of the sharpening member. When the blade is inserted into the space between the abrasive surface and the guide surface the blade presses against the guide surface to displace the guide surface linearly in a direction perpendicular to the guide surface so that the movement is a lateral movement in the same plane without any pivoting or twisting of the guide member. Thus, the angle between the guide surface and the abrasive surface remains constant regardless of the extent of displacement of the guide member.

Abstract: The invention relates to a grinding wheel for grinding a blade, on the surface of which ions are deposited by means of a plasma-supported method and containing silicon carbide as abrasive medium with a grain size ranging from 100 to 500 mesh, said material being deposited in a ceramic based binding agent with aluminum silicate. The abrasive medium grains are thermally hardened and bonded in the porous aluminum silicate bond. Abrasive medium concentration in the grinding wheel is higher than 1 volume %. Said grinding wheel is used in a grinding system for rough grinding the blade. Polishing is then cared out with a second grinding wheel containing pure corundum as abrasive medium with a grain size ranging from 400 to 800 mesh, which is deposited a in multicomponent synthetic resin, preferably a phenol resin based resin with a concentration of more than 1 volume %, preferably 30 to 50%. The abrasive medium contains polishing-active filling materials with a volume fraction ranging between 3% and 10%.

Abstract: A knife sharpener holder including a first body portion swivelly attached to the vertical panel of a drawer and a second body portion pivotally attached to the first body portion and adapted to carry a knife sharpener mechanism. The knife sharpener may be disposed within the associated drawer allowing the drawer to be closed, or alternatively may be swivelled and pivoted to an operative position when the drawer is opened.

Abstract: A tool for shaping curved surfaces on a workpiece, in particular upper curved surfaces of the forward and aft rails of a gas turbine engine shroud section. The shaping tool includes a base member for securing the workpiece and a shaping member movable relative to the base member and having one shaping element for each curved surface of the workpiece. The shaping tool also includes cooperating follower and guide members to guide the shaping member through a path as the shaping member is moved relative to the base member such that each of the shaping elements of the shaping member shape the respective curved surfaces of the workpiece. The tool can be used in a method for shaping the curved surfaces of the workpiece where the shaping member is moved in a path such that each of the shaping elements of the shaping member shape the respective curved surfaces of the workpiece and repeating this step until the desired degree of shaping of the curved surfaces of the workpiece is achieved.

Abstract: The present invention provides a blade sharpening and edge uncurling device for sharpening dull blades. The device includes a handle at one end and a conical steel for uncurling edges at an opposite end. A threaded stone retaining shaft bridging between the handle and the steel maintains a circumscribing sleeved stone section in position for sharpening the blades. When the sleeved stone section needs to be replaced, the threaded stone retaining shaft is simply unthreaded to expose the stone for removal and replacement.

Abstract: The present invention relates to a honing method and apparatus which provides greater control over the edge shape, as well as reductions in the effort required to hone multiple edges on workpieces. The invention accomplishes these improvements by controlling the speed of the abrasive wheel, as well as the orientation and position of the workpiece prior to and/or while it is in contact with the abrasive brush. This provides for greater control over the hone shape, hone size, and hone distribution along all the cutting edges of the tool.

Abstract: A device and method for sharpening the blade of a lawn mower without removing the blade from the mower, the device comprising a motor, a flexible drive cable, a grinder housing and a two-sided grinding disk. Most preferably, the motor is powered by a rechargeable battery, and the drive cable is connected to the grinder housing by a universal joint.

Abstract: The invention relates to a grinding machine for sharpening (honing) blades (4) of knives, scissors, hand tools or the like, with a magazine, a feed station (1) or similar, and with a honing station (2) for the blades (4), which has two contra-rotating grinding wheels (6a, 6b). In order to automate a method to be performed using the said machine whilst maintaining a high degree of machining accuracy, it is proposed to use a robot (3) with memory-programmable control having a manipulator (5) moveable in at least four of the six possible translatory and rotational degrees of spatial freedom, a gripper head, which has a holding device for accommodating and moving a blade (4), being fixed to the manipulator (5).

Abstract: The present invention relates to a process and control device to grind a knife shaft used in a machine intended for cutting sheets of materials into strips, for example, sheets of paper, plastic, plates of photosensitive film or any other material having the form of thin sheets. The process includes determining the actual differences of position of the knives of the knife shaft in relation to a theoretical position and then dividing these differences to cut the film strips by widths practically equal to one another, and determining the quantities of material to be eliminated by grinding for each knife. This process especially finds its principal application in the photographic industry, in particular on grinding machines for the knives of knife shafts equipping the film slitters.

Abstract: A sharpening apparatus for a rotary knife blade includes a sharpening material support base and at least one lower sharpening device such as a metal pin mounted on the sharpening material support base. At least one upper sharpening device is mounted on the sharpening material support base, the upper sharpening device extending at an acute angle upwards above and relative to the lower sharpening device. The upper and lower sharpening devices are disposed relative to one another to generally simultaneously engage upper and lower surfaces of a blade to be sharpened and a guide device such as a curved wall structure is operative to releasably guide a blade between the upper and lower sharpening devices to assist with sharpening of a blade.

Abstract: A device for preparing a skate blade for use polishes a bottom surface of a skate blade to improve the glidability of the skate. The device includes a polishing surface for polishing the skate blade, blade guides having an opening therebetween for supporting the skate blade while the skate blade is being polished by the polishing surface, and a frame for holding the polishing surface and the blade guides. To polish a skate blade, a polishing compound is applied to the polishing surface, the skate blade is placed in the opening of the blade guides such that the bottom surface of the skate blade contacts the polishing surface, and the skate blade is slid against the polishing surface, while applying a downward force to press the skate blade against the polishing surface, until the bottom surface of the skate obtains a desired polished state.

Abstract: A sharpening apparatus for a rotary knife blade includes a sharpening material support base and at least one lower sharpening device such as a metal pin mounted on the sharpening material support base. At least one upper sharpening device is mounted on the sharpening material support base, the upper sharpening device extending at an acute angle upwards above and relative to the lower sharpening device. The upper and lower sharpening devices are disposed relative to one another to generally simultaneously engage upper and lower surfaces of a blade to be sharpened and a guide device such as a curved wall structure is operative to releasably guide a blade between the upper and lower sharpening devices to assist with sharpening of a blade.

Abstract: A knife sharpening device includes a base with a motor and a gear reduction assembly connected thereto. A main shaft is connected to the gear reduction assembly and two grinding disks are mounted on the main shaft. A separation tube is mounted on the main shaft and located between the two grinding disks. Each grinding disk has a spring urging thereto so as to prevent the grinding disks from shaking. A cover is mounted to the base and has straight slots each of which is in communication between two openings. Each slot includes two narrow ends which communicate with the two openings so that the blades of knives are inserted perpendicularly in the slots and the cutting edge is slightly clamped by the narrow ends.

Abstract: A sharpener for a serrated knife having a plurality of ribbed cutting edges interspersed with concave cutting edges, the sharpener consisting of an elongated abrasive sharpening member having a longitudinal axis and a peripheral surface, a ribbed configuration on the peripheral surface extending longitudinally of the longitudinal axis for slidably engaging the ribbed cutting edges, and a convex surface on the peripheral surface extending longitudinally of the longitudinal axis for slidably engaging the concave cutting edges.

Abstract: The present invention relates to a control device to grind a knife shaft used in a machine intended for cutting sheets of materials into strips, for example sheets of paper, plastic, plates of photosensitive film or any other material having the form of thin sheets. The control device according to the invention enables the grinding of the knives of knife shafts of a slitter by checking and controlling the drift of the dimensional differences of position of the knives on the knife shaft and by controlling the variability of the pitches between the knives. This with the goal of obtaining the precision and the quality of cutting required for cut photographic film strips. This device especially finds its principal application in the photographic industry, in particular on grinding machines for the knives of knife shafts equipping the film slitters.

Abstract: A blade sharpening method and apparatus is characterized by sharpening the blade in a single station grinding assembly. The grinding assembly includes two opposed abrading wheels which interlock to form a nip for sharpening the blade. The wheels each include a first coarse portion for roughing an edge of the blade, a second fine portion for finishing the hone facet, and a third coarse portion for forming other facets adjacent to the hone facet. The wheels are specially contoured and have parallel axes tilted relative to the direction of travel of the blade. The striations formed on the facets of the blade by the abrading wheels extend at the same angle in both facets.

Abstract: Apparatus for sharpening a razor blade with a motor actuated sharpening member mounted in a housing with a slot for receiving the razor head and a cradle assembly for engaging the distal end of the razor handle to hold the razor head in the slot. A carriage assembly holds the sharpening member opposite to the slot with its sharpening surface engaging the cutting edge of a razor blade secured in the razor head. A drive assembly driven by a motor operated by a timing circuit causes repetitive movement of the sharpening surface for a predetermined period of time.

Abstract: A method for sharpening the cutting knives of a knife ring chipper, which includes a knife ring and a number of knife units, the units in turn containing knives and holding plates. The knife ring is removed from the knife ring chipper, the knife units of the knife ring chipper are removed from the knife ring and the knife units are disassembled. The dull knives are moved to a first buffer station and are stored and then moved to a grinder and sharpened. The sharpened knives are moved to a second buffer station and are stored, and the sharpened knives are then mounted onto holding plates in knife units. The knife units are incorporated into a knife ring and the knife ring is incorporated into a knife ring chipper.

Abstract: An automatic grinding device for sharpening the knives of a forage harvester chopper drum includes a controller including a counter for counting the number of times the grindstone is adjusted toward the chopper drum during sharpening operation. The controller includes a microprocessor having a non-volatile memory in which may be stored a threshold value, determined by the type of grindstone, to which the count of the counter may be compared for generating a signal indicating the degree of wear of the grindstone so that it may be replaced when worn out.

Abstract: A dust protection cover for a rotary grinding tool and having a base (1, 11, 21) fixedly securable with the tool housing (10) a substantially circular cover body (2, 12, 22) connectable with the base (1, 11, 21) for completely circumferentially covering the grinding disc (4, 14, 24) securable at the free end of the output shaft of the tool drive motor, and displaceable between a operational position, in which the cover body completely covers the grinding disc, and a release position in which the cover body exposes a portion of a grinding disc circumference, and a connection element(s) projecting from a side of the base (1, 11, 21) adjacent to the tool housing for securing the cover body (2, 12, 22) to the base (1, 11, 21) in the release position of the cover body.

Abstract: An apparatus for sharpening objects (2) comprises abrading means (6) arranged for abrading an end portion of said objects (2) and for creating tip means (2a) in said objects (2) and support means (7) connected to rotation driving means (8) and arranged for supporting said abrading means (6), said abrading means (6) being fixed to said support means (7) by magnetic coupling means (15); the projection of the longitudinal axis of each object (2) on a plane containing an active surface (10) is tangent to a circumference the center of which lies on a rotation axis (X) of said abrading means (6); moving means (33) for moving said objects (2) are provided, the moving means (33) being arranged for driving said objects (2) to interact with regions of said active surface (10); in addition, transfer means (5) rotates each object (2) around the longitudinal axis thereof and moves each object (2) along said longitudinal axis towards said abrading means (6).

Abstract: An electrically driven grinder for ceramic cutlery 1 has a rough machining diamond abrasive wheel 2 comprising a disc-shaped member provided with a grinding surface on its periphery and a finishing machining diamond abrasive wheel comprising a substantially disc-shaped member provided with grinding surfaces forming a V-shaped groove on its periphery, both of which are attached onto a rotary shaft coupled to a motor, as well as has a cover member provided with guide slots for directing an edge of ceramic cutlery to the grinding surfaces of the respective diamond abrasive wheels, wherein an angle &agr; defined between the grinding surfaces 32 forming the V-shaped groove of the finishing abrasive wheel and a plane orthogonal to the rotary shaft 4 is set to 10 to 20 degrees, and an angle defined between at least the guide slot 10 of the cover member 8 and a plane orthogonal to the rotary shaft s set to 12 to 18 degrees.

Abstract: A method is described for surface finishing complex and simple surface shapes by abrasion of selected zones of surface, leaving contiguous zones unfinished.

Abstract: A blade sharpening method and apparatus is characterized by sharpening the blade in a single station grinding assembly. The grinding assembly includes two opposed abrading wheels which interlock to form a nip for sharpening the blade. The wheels each include a first coarse portion for roughing an edge of the blade, a second fine portion for finishing the hone facet, and a third coarse portion for forming other facets adjacent to the hone facet. The wheels are specially contoured and have parallel axes tilted relative to the direction of travel of the blade. The striations formed on the facets of the blade by the abrading wheels extend at the same angle in both facets.

Abstract: A sharpener (1) for a medical instrument has a housing (2) with an opening (3) for receiving the fingers of a hand and a sharpening element (6), having an abrasive surface (1), bisecting another opening (9) and defining two apertures (9a/9b) for respectively receiving the prongs of an instrument having edges which can be sharpened by simultaneously drawing them across the sharpening element.

Abstract: A sharpening guide assembly for use in sharpening ski and snowboard edges includes an angle member and at least one riser member. The angle member includes at least a first outer surface and a second outer surface, an inner edge of the first outer surface adjoining an upper edge of the second outer surface. The riser member is positioned on the first outer surface of the angle member such that a top portion of the riser member extends above the first surface of the angle member. The angle member is formed of a first material and the riser member is formed of a second material, wherein the second material has a hardness which is greater than a hardness of the first material. During a sharpening operation, a sharpening tool is supported on the riser member such that the sharpening tool such as a file member is positioned above the first outer surface of the angle member so as to avoid potential wear causing contact therewith.

Abstract: A sharpening attachment for sharpening cutting implements with a rotating bit of a tool. The sharpening attachment includes a guide, a mount and a clamp. The guide is adapted for attachment to a rotary tool. The mount is connected to the guide, such that the mount is laterally movable along the guide. The clamp clamps the cutting implement to the mount. Movement of the mount along the guide brings the cutting implement into contact with the rotating bit.

Abstract: A blade sharpening method and apparatus is characterized by sharpening the blade in a single station grinding assembly. The grinding assembly includes two opposed abrading wheels which interlock to form a nip for sharpening the blade. The wheels each include a first coarse portion for roughing an edge of the blade, a second fine portion for finishing the hone facet, and a third coarse portion for forming other facets adjacent to the hone facet. The wheels are specially contoured and have parallel axes tilted relative to the direction of travel of the blade. The striations formed on the facets of the blade by the abrading wheels extend at the same angle in both facets.

Abstract: An apparatus and method for honing, sharpening or grinding a curved peripheral cutting surface of a slicer blade are provided. Included is the use of one of a set of interchangeable cams that generally follows the curved shape of the blade cutting surface, whether same has a constant radius or varying radii. The honing is accomplished off-line of the slicer equipment, and the movement of two honing or grinding wheels is closely controlled so as to provide honed or ground cutting edges which are of substantially uniform width throughout their respective peripheries. The two honing or grinding wheels operate independently of each other on opposing edges of the blade, a large blade load area is provided therebetween, precision gib adjustments are provided between the wheel and the cam follower, and a single tool is needed to make adjustments of the apparatus.

Abstract: A blade sharpener comprises a work surface consisting of a single support line. A grinding wheel defines a plane that contains the support line. The grinding wheel is swingable in the grinding wheel plane to a selected position relative to the support line. A blade is supported on the support line in a manner that produces a first cutting surface on the blade cutting edge. The single support line enables mulching blades to be sharpened without having to impart angular motions, in space to them as they are fed past the grinding wheel. The grinding wheel is swingable to different positions relative to the support line, thereby enabling the grinding wheel to produce different cutting surfaces on the blades. Swinging of the grinding wheel is achieved by mounting it to a plate that pivots about an axis perpendicular to the grinding wheel plane. A mobile work table having a top plate of finite area is selectively retainable over and removable from the single line support.

Abstract: A method is described for surface finishing complex and simple surface shapes by abrasion of selected zones of surface, leaving contiguous zones unfinished.

Abstract: The invention relates to a grinding machine for sharpening (honing) blades (4) of knives, scissors, hand tools or the like, with a magazine, a feed station (1) or similar, and with a honing station (2) for the blades (4), which has two contra-rotating grinding wheels (6a, 6b). In order to automate a method to be performed using the said machine whilst maintaining a high degree of machining accuracy, it is proposed to use a robot (3) with memory-programmable control having a manipulator (5) moveable in at least four of the six possible translatory and rotational degrees of spatial freedom, a gripper head, which has a holding device for accommodating and moving a blade (4), being fixed to the manipulator (5).

Abstract: For users of chain saws it is known that the chain saw teeth should rather often be sharpened by filing in order to keep them well cutting. Traditionally, such a sharpening is effected by means of a straight filing rod moved in a reciprocal manner, but according to the invention it is realized that it is better to arrange the rod as a rotary circular or screw shaped formation, whereby the teeth can be worked in a simplified manner.

Abstract: A blade sharpener comprises a work surface consisting of a single support line. A grinding wheel defines a plane that contains the support line. The grinding wheel is swingable in the grinding wheel plane to a selected position relative to the support line. A blade is supported on the support line in a manner that produces a first cutting surface on the blade cutting edge. The single support line enables mulching blades to be sharpened without having to impart angular motions, in space to them as they are fed past the grinding wheel. The grinding wheel is swingable to different positions relative to the support line, thereby enabling the grinding wheel to produce different cutting surfaces on the blades. Swinging of the grinding wheel is achieved by mounting it to a plate that pivots about an axis perpendicular to the grinding wheel plane. A mobile work table having a top plate of finite area is selectively retainable over and removable from the single line support.

Abstract: A tool head (46) in which a tool spindle (52), adapted to be equipped with a disc-shaped tool (100), is supported so as to be driven in rotation about a spindle axis (C), is associated with a workpiece support (82) on which a workpiece (10) can be arranged such that the tooth tip (18) of a cutting tooth (12) to be machined will lie on a stationary reference axis (A). The tool head (46) is movably supported by means of a reciprocating slide (34) which is movable back and forth along a reciprocating slide guide means (32) transversely of the reference axis (A), by means of a feed slide (24) adapted to be advanced along a feed slide guide means (22) transversely of the reciprocating slide guide means (32), and by a pivot bearing means (42) defining a pivot axis (B) parallel to the reciprocating slide guide means (32).

Abstract: Hollow-ground surfaces are simultaneously formed along opposite sides of a knife blade blank by passing the knife blade blank between a pair of grinding wheels. The grinding wheels carry grinding belts about idler pulleys. The idler pulleys are adjustable toward and away from the respective grinding wheels to adjust belt tension and to accommodate different sizes of grinding belts. The angularity of the idler pulleys relative to the grinding wheels is likewise adjustable such that planes passing through the idler wheels and grinding wheels are angularly adjustable relative to one another enabling the grinding belts to run true about the grinding wheels.

Abstract: An apparatus and method for sharpening a disc blade includes a grinding wheel mounted on a housing. The housing is mounted on a drive shaft so that the housing rotates with the drive shaft but can move axially relative to the drive shaft. A transversely extending projection on the housing extends into a space between two axially spaced spacers on the drive shaft. A spring is positioned between each spacer and the projection for resiliently biasing the housing in an axial direction.

Abstract: Improved chemical mechanical polishing methods for removing material from a surface of a workpiece are disclosed. The workpiece is polished for a predetermined amount of time, the wafer is then moved to the perimeter of a polishing surface and film thickness measurements are obtained. The results from the film thickness measurements are used to adjust parameters for a subsequent polishing process.

Abstract: A sharpening device for the cutting knife (12) of a face-to-face weaving machine, comprising a belt-shaped sharpening means (4) of a flexible material provided with a sharpening face that is so disposable that the cutting knife (12) during its back and forth going movements comes into contact with this sharpening face, and that is movable in order to bring various areas of the sharpening face within reach of the cutting knife (12). The sharpening means (4) can be unwound from a reel (7) and be wound up by another reel (3) in order to bring several areas of the sharpening face within reach of the cutting knife (12). The two reels (3), (7) and the belt-shaped sharpening means (4) can be made as a detachable unit. The sharpening means (4) preferably runs with the sharpening part over an elastically disposed curved surface (9).

Abstract: A device for grinding the bedknife 6 of a lawnmower comprising a mounting bar 4, electromagnets 2 which are mounted flush with the top face of mounting bar, and end brackets 8. In use, the bedknife is placed on mounting bar and is held in place by electromagnets while end brackets are positioned relative to the bedknife and the bedknife secured to them. When a grindstone motor (not shown) is started, the electromagnets are automatically de-energized. After grinding, the grindstone motor is stopped and electromagnets are re-energized to hold a bedknife in place while the end brackets are detached. The electromagnets are then manually de-energized so that the bedknife can be removed from the device.

Abstract: A scissor sharpener has a recurved frame forming a U-shaped channel and an opening for receiving four fingers of a hand for grasping. A sharpening stone spans the channel at a predetermined angle to the adjacent surfaces of the frame. Surgical scissors can be wedged within the channel while their cutting edges are drawn over the stone for sharpening.

Abstract: A creping doctor blade and method of forming such blade including a thin flexible generally planar creping member having an elongated flexible, substantially prismatic body having a relieved substantially planar engagement surface adapted to bear against the drying cylinder. A rake face of the creping doctor blade extends generally outwardly relative to a surface of the rotatable drying cylinder when the creping blade engages the cylinder and the length of the substantially planar engagement surface is generally equivalent to the width of the drying cylinder with the width of the substantially planar engagement surface being selected so as to correspond to the wear pad dimension of a conventional blade used in the same processes and is generally in a range from about 0.005 inches to about 0.020 inches with the relief face of the blade adjacent to the rotatable drying cylinder having an elongated depression having a depth of at least about 0.

Abstract: An electrode sharpener has a main body that is threaded directly onto a rotary tool. The body includes a base and a housing connected to the base. The base has a threaded bore and a smaller passage centrally located above the bore through which a wheel mandrel protrudes. A shoulder is machined out of the upper end of the base. The housing, which is preferably made from round stock, is bored out such that it slips over the upper end of the base, with lower ends of the housing abutting the shoulder of the base. Fasteners are included to affix the base to the housing. An abrasive grinding wheel is mounted for rotation on the wheel mandrel and is located within the housing. An adjustment grip with knurled edges is adjustably connected to the outer surface of the housing.