A device for sharpening bladed tools comprising a body defining an elongate handle portion adapted to be gripped in one hand by a user, the body having a forwardly projecting support member curved or angled downwardly with respect to the handle portion and fitted with a sharpening element at or near the end thereof, wherein the support member comprises a pair of spaced support arms extending generally parallel to the longitudinal extent of the handle portion, the support arms being positioned to respective sides of the sharpening element and defining an aperture therebetween adapted to accommodate a blade or anvil of a tool during sharpening of a counterpart tool blade.

Conditioning devices for conditioning blades are provided. A conditioning device includes a first rod and a second rod, at least one of the first rod and the second rod rotatable about an axis, the first rod and the second rod oriented to define a blade conditioning zone therebetween, the blade conditioning zone being defined by a blade conditioning angle between the first rod and the second rod. The conditioning device further includes a stationary magnet and a movable magnet. The movable magnet is connected to the one of the first rod and the second rod and rotatable about the axis. The movable magnet has an opposite magnetic orientation relative to the stationary magnet. Rotation of the one of the first rod and the second rod adjusts the blade conditioning angle.

The tape measure has a tape, which is partially received within an interior of a housing. An attachment is fixedly attached with one side of the housing, and the attachment has an outer surface that faces away from the housing and that is provided with a knife sharpening material. The attachment allows a user to conveniently sharpen their knife without carrying around a separate sharpening stone.

A sharpening tool includes a main body, a first grindstone unit, a second grindstone unit, a stop plate, a blade and a sharpening bar. The main body has a grip and an extension neck. The grip has a receiving space and a receiving channel. The extension neck has an arc-shaped profile and has a first positioning recess and a second positioning recess. The first grindstone unit is mounted in the first positioning recess. The second grindstone unit is mounted in the second positioning recess. The stop plate is pivotally mounted on the main body and has two pivot ears and an opening. The blade is pivotally mounted on the main body and received in the receiving channel. The sharpening bar is inserted into the receiving space.

A grinder/polisher apparatus is disclosed, the apparatus comprising first and second sets of grinding elements (2, 3) facing each other under an angle () thus forming between the sets of grinding elements a V-groove in which the cutting edge of a knife is insertable for movement upon grinding, wherein the grinding elements are supported in holders (5, 6). The grinding elements (2, 3) are pivotally arranged in the holders (5, 6) about axes (R, R) the inclinations of which correspond with the opening angle () of the V-groove.

A sharpening tool includes a main body, a first grindstone unit, a second grindstone unit, a stop plate, a blade and a sharpening bar. The main body has a grip and an extension neck. The grip has a receiving space and a receiving channel. The extension neck has an arc-shaped profile and has a first positioning recess and a second positioning recess. The first grindstone unit is mounted in the first positioning recess. The second grindstone unit is mounted in the second positioning recess. The stop plate is pivotally mounted on the main body and has two pivot ears and an opening. The blade is pivotally mounted on the main body and received in the receiving channel. The sharpening bar is inserted into the receiving space.

A multi-stage hand-held sharpener. In some embodiments, the sharpener has a handle adapted to be gripped by a hand of a user, the handle extending along a longitudinal axis between opposing first and second ends. A primary sharpening stage is provided in the handle between the first and second ends, the primary sharpening stage having a first abrasive surface extending at a first angle to facilitate a primary sharpening operation by a user upon the tool. An abrasive rod extends from the first end of the handle in a direction parallel to the longitudinal axis. The handle includes a substantially flat guide surface linearly extending from the first end toward the abrasive rod at a second angle, the abrasive rod and the guide surface forming a second sharpening stage adapted to facilitate a secondary sharpening operation by the user upon the tool.

A device for sharpening bladed tools comprising a body defining an elongate handle portion adapted to be gripped in one hand by a user, the body having a forwardly projecting support member curved or angled downwardly with respect to the handle portion and fitted with a sharpening element at or near the end thereof, wherein the support member comprises a pair of spaced support arms extending generally parallel to the longitudinal extent of the handle portion, the support arms being positioned to respective sides of the sharpening element and defining an aperture therebetween adapted to accommodate a blade or anvil of a tool during sharpening of a counterpart tool blade.

A tool clamping assembly and a sharpener are provided. The tool clamping assembly includes an arm body, its first end is connected with a sharpening frame, the arm body is provided with a top pin and a driving member, the driving member drives the top pin to move along an axial direction of the arm body; a clamping arm component, which includes a first clamping arm and a second clamping arm, the two clamping arms are mirror symmetric and are connected by a rotation axis. The rotation axis is connected to a second end of the arm body, and a torque member is provided on the rotation axis. The torque member is used to apply torque to the two clamping arms to jointly clamp the top pin at first ends of the two clamping arms; when the top pin is moved, the two clamping arms can be rotated synchronously.

A knife detecting and sharpening system can be installed in a machine base of a splitting machine and adjacent to a band knife, which is an annular loop and is driven by two knife-driving wheels, and adjacent to a wheel shaft of one of the two knife-driving wheels. The system is controlled by a computer of the splitting machine and comprises a resistance detector, connected to the wheel shaft and electrically connected to the computer, and an electric sharpening device, which is mounted inside the machine base and is controlled by the computer to sharpen the band knife's blade, to be withdrawn from the band knife, and to automatically clean dust generated during sharpening the blade. The resistance detector detects a resistance during sharpening and transmits it to the computer, which can control the electric sharpening device operating a sharpening mode or a stop-sharpening mode based on the resistance.