Method and apparatus for sharpening a cutting edge of a cutting tool, such as a kitchen knife. In some embodiments, an abrasive assembly has a frame, a handle, and a cartridge that supports a plurality of abrasive members each having an associated abrasive surface. A rod affixes the abrasive assembly to a base assembly to facilitate movement of the abrasive assembly along the cutting edge of the tool responsive to engagement, by a user, of the user handle. Each abrasive member is configured to be moved, by the user, with respect to the handle to present each abrasive surface in turn. In some cases, the cartridge is rotatable about a cartridge axis that may be parallel or non-parallel to a central axis of the rod.

A sharpening device for a blade of a cutting tool, such as a knife or the like, includes at least two flexible discs. Each disc has an abrasive inner face. The discs, abutting with their abrasive faces, face each other and are mounted so as to rotate in the same direction and at the same speed about a same axis. The device includes a pressure mechanism, arranged outside the flexible discs and clamping the discs along a non-diametrical chord, and an inner pressure mechanism for the inside of the discs, so as to exert pressure on the inner faces of the discs, in the parts of same delimited by the chord and not traversed by the axis. The choice of positioning of the inner pressure mechanism relative to the pressure mechanism defines the sharpening angle.

A sharpening device for a blade of a cutting tool, such as a knife or the like, includes at least two flexible discs. Each disc has an abrasive inner face. The discs, abutting with their abrasive faces, face each other and are mounted so as to rotate in the same direction and at the same speed about a same axis. The device includes a pressure mechanism, arranged outside the flexible discs and clamping the discs along a non-diametrical chord, and an inner pressure mechanism for the inside of the discs, so as to exert pressure on the inner faces of the discs, in the parts of same delimited by the chord and not traversed by the axis. The choice of positioning of the inner pressure mechanism relative to the pressure mechanism defines the sharpening angle.

A knife sharpening device includes a main housing, a first knife sharpening blade having two first sharpening edges, a second knife sharpening blade having two second longitudinal sharpening edges, and a blade replacement arrangement. The blade replacement arrangement includes a first supporting device movably and inclinedly supported by the main housing, a first knife sharpening blade detachably supported on the first supporting device to expose one of the first sharpening edges out of the first supporting device, a second supporting device movably and inclinedly supported by the main housing to and a second knife sharpening blade being detachably supported on the second supporting device to expose one of the second longitudinal sharpening edges out of the second supporting device.

A knife sharpening device includes a main housing, a first knife sharpening blade having two first sharpening edges, a second knife sharpening blade having two second longitudinal sharpening edges, and a blade replacement arrangement. The blade replacement arrangement includes a first supporting device movably and inclinedly supported by the main housing, a first knife sharpening blade detachably supported on the first supporting device to expose one of the first sharpening edges out of the first supporting device, a second supporting device movably and inclinedly supported by the main housing to and a second knife sharpening blade being detachably supported on the second supporting device to expose one of the second longitudinal sharpening edges out of the second supporting device.

A knife sharpener comprises a grinding surface for grinding a blade of the knife when the blade is moved relative to the grinding surface and an observation device including a sensor element and a display element. The sensor element is configured to observe the blade and to collect data regarding the blade when the blade is moved relative to the sensor element. The display element is configured to communicate a condition of the blade to an operator of the observation device. The condition of the blade is based on the data collected by the sensor element when the blade is moved relative to the sensor element.

A knife sharpener comprises a grinding surface for grinding a blade of the knife when the blade is moved relative to the grinding surface and an observation device including a sensor element and a display element. The sensor element is configured to observe the blade and to collect data regarding the blade when the blade is moved relative to the sensor element. The display element is configured to communicate a condition of the blade to an operator of the observation device. The condition of the blade is based on the data collected by the sensor element when the blade is moved relative to the sensor element.

A clamping assembly includes first and second jaws supported above a base in opposed, spaced-apart alignment on opposite sides of a central clamp axis, each jaw having a proximal end portion adjacent the base and an opposite distal end portion, where the jaws are pivotable between an open position and a closed position. A wedge movable along the central clamp axis between the proximal end portions of the pair of jaws in response to moving a handle between a first handle position and a second handle position. A cam assembly between the wedge and the base includes a cam, a follower on the proximal handle end portion, and a spring between the cam and the base. Compressing the spring increases an axial distance between the cam and the wedge.

An arrangement (50) for grinding edged tools, such as knives, said arrangement (50) configured to be part of a grinding machine (100), comprising: a conical grinding wheel (110) arranged to be rotated in a rotational direction (R) and having an envelope grinding surface (111) for an edged tool (10), and; a grinding jig (120) for holding an edged tool (10), wherein the grinding jig (120), in use, is arranged such that the edged tool (10) extends over the envelope grinding surface (111) perpendicular to the rotational direction (R) and wherein the grinding wheel (110) is made of metal with a super-abrasive coating.

An arrangement (50) for grinding edged tools, such as knives, said arrangement (50) configured to be part of a grinding machine (100), comprising: a conical grinding wheel (110) arranged to be rotated in a rotational direction (R) and having an envelope grinding surface (111) for an edged tool (10), and; a grinding jig (120) for holding an edged tool (10), wherein the grinding jig (120), in use, is arranged such that the edged tool (10) extends over the envelope grinding surface (111) perpendicular to the rotational direction (R) and wherein the grinding wheel (110) is made of metal with a super-abrasive coating.