A sharpening apparatus includes a base having a top surface with a channel or mounting rail. A clamping assembly is configured to be secured to base via the rail or channel. When installed, the clamping assembly includes a pair of jaws extending upward from the top of the base in opposed alignment with distal ends of each jaw adjustably spaced to grip a cutting implement. A guide rod has an end configured to be pivotably mounted to the base via the rail or channel and so that the rod's position along the base is adjustable by sliding movement along the rail or channel.

A grinding jig (100) for holding a blade tool (200) having an edge (210) in a grinding machine (300), comprising: a first and a second clamp half (110, 120) arranged to hold between them at least a portion of a blade tool, and; an elongate support portion (160) for supporting the grinding jig (100) onto a support bar (350) of a grinding machine (300), wherein; the elongate support portion (160) comprises a front end abutment surface (170) and a rear end abutment surface (180) the front and rear end abutment surfaces (170, 180) are spaced to receive a portion of a support bar (350) of and such that the grinding jig (100) may be moved back and forth relative the support bar (350), in direction parallel with its longitudinal center axis (Y).

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.

A compact angle reference apparatus comprises one angle guide; and a base; wherein the one angle guide can be disposed on the base; wherein the base can be disposed on a surface adjacent to a sharpening tool; wherein the one angle guide further comprises a frame having an insert side and a hinge side, a lid having a guide surface, an insert end, and a hinge end opposite to the insert end, a set of hinge pins connecting the hinge side of the frame and the hinge end of the lid in a rotatable manner, an insert having a predetermined height, wherein the insert is movable, wherein the insert is configured to be erected between the insert end of the lid and the insert side of the frame, wherein the lid and the frame can form an angle by the predetermined height of the insert.

A sharpening apparatus includes a base having a top surface with a channel or mounting rail. A clamping assembly and at least one angle adjustment assembly are releasably securable to base using the rail or channel. When installed, the clamping assembly includes comprising a pair of jaws extending substantially perpendicularly upward from the top surface in opposed alignment and distal ends adjustably spaced to grip a cutting implement. The angle adjustment assembly has a bracket and a rod receptacle pivotably attached to the bracket. A longitudinal guide rod has an end portion constructed to be releasably secured to the rod receptacle. The sharpening apparatus is constructed to be reversibly assembled with the clamping assembly and the at least one angle adjustment assembly secured to the mounting rail with the angle adjustment assembly adjustably spaced from the clamping assembly, and with the first rod end portion secured to the rod receptacle.

A sharpener cover retrofit attachment to retrofit an electrode sharpener cover attachment on an electrode sharpener, the electrode sharpener for sharpening an electrode rod and having a protruding hollow sharpener shaft with a sharpener shaft outer diameter and a rotating sharpener shaft inner diameter for accepting the electrode rod. The attachment includes a first and second annulus, both axially aligned such that they are able to accept and align the electrode rod into the rotating sharpener shaft inner diameter.

A grinding machine for grinding tools comprises a support unit configured to support a tool to be ground and provided with members suitable to incline it by certain angle with respect to a horizontal reference plane; and an operating unit that is mobile along a main axis of development of the grinding machine in order to move with respect to the support unit and comprises an abrasive element intended to abrade at least a portion to be ground of the tool. The grinding machine comprises an adjustment system to adjust the inclination of the support unit with respect to the reference plane. The adjustment means system is mobile parallel to the main axis of development to move to a predetermined distance from the reference plane.

A device for grinding hard metal-tipped teeth of saw bands having a feed device for feeding a temporary workpiece in a timed manner where the temporary workpiece is formed from a plurality of saw bands that are parallel to one another, also having a clamping device that clamps the plurality of saw bands against one another, further having a grinding unit for simultaneously grinding a plurality of teeth, where the grinding unit has a grinding wheel having a plurality of grinding profiles, and a corresponding method.

An arm for a blade sharpening device, intended to be retrofitted onto an existing, conventional blade sharpening device so as to offer an inexpensive option to upgrade the operational simplicity and operability of the device. It has a three hingeable link linear support arm that has a lock collar affixed an its proximal end. The lock collar slidingly retains a blade clamp barrel with a blade clamp affixed at its proximal end. The lock collar allows the retraction, extension and limits the rotation of the blade.

An electrode sharpener has a main housing, which has a threaded bore to attach to the end of a rotary tool. The housing has guides threaded into it, which position tungsten electrodes for grinding against an abrasive wheel that is inserted into the rotary tool's collet.