Abstract: A milling burr for use in handheld machines has a shank and a cutting member of hard metal which is rigidly connected to said shank. The cutting member is provided with cutting teeth which extend in a first direction of twist. The cutting teeth are divided in cutting tooth portions by rows of tooth dividers extending in a second direction of twist. The cutting tooth portions and the tooth dividers are arranged one behind the other when seen in the peripheral direction in such a way that an overlap occurs in an in each case alternating manner when seen in the peripheral direction.

Abstract: A sharpening device for manually sharpening the cutting teeth of saw chains for chain saws has a frame, which has two head parts (spaced apart from one another and two pairs of guide rods which are, in each case, arranged parallel to one another and to a longitudinal axis and rigidly connect the head parts to one another. Parallel to the longitudinal axis, round files and two file faces are held without play, but exchangeably in the head parts. The pairs of guide rods and the respective associated round files and the respective file faces are arranged rotationally symmetrically with respect to the longitudinal axis.

Abstract: A sharpening device for manually sharpening the cutting teeth of saw chains for chain saws has a frame, which has two head parts (spaced apart from one another and two pairs of guide rods which are, in each case, arranged parallel to one another and to a longitudinal axis and rigidly connect the head parts to one another. Parallel to the longitudinal axis, round files and two file faces are held without play, but exchangeably in the head parts. The pairs of guide rods and the respective associated round files and the respective file faces are arranged rotationally symmetrically with respect to the longitudinal axis.

Abstract: A roughing-grinding disc consists of a plurality of part discs, which are flat in design, are located closely against one another, unconnected and uncovered, in an outer working region, are rigidly connected to one another in an inner connecting region located within the working region and are provided with a hub passing through the grinding disc in a centre opening.

Abstract: A rough grinding tool has a support plate with a centre opening arranged concentrically with respect to a centre longitudinal axis for receiving a drive shaft of a drive machine. Supported on the support plate is a fiber grinding disc, which is formed from a fiber disc being used as a carrier and a resin-bound grinding means covering. The fiber grinding disc is glued to the support plate.

Abstract: A fan-type grinding wheel comprises a rigid support plate and is provided with grinding elements. These grinding elements comprise a main portion forming a first working face and a bending portion forming a peripheral working face. Furthermore, they comprise an outer portion forming a second working face.

Abstract: A hoof plane comprises cutting teeth with cutting edges which extend perpendicular to the longitudinal axis and therefore to the working direction. The cutting teeth and the chip breaker grooves are formed by machining and extend at an angle of 45° relative to the longitudinal axis. The hoof plane consists of a high-quality tool steel and has a hardness of at least 64 HRC.

Abstract: A fan-type grinding wheel which can be driven in rotation in a direction of rotation comprises, on an annular rim region of a support plate, grinding blades which are configured in the form of a triangle. The outer edge of each grinding blade defines a portion of an outer rim of a grinding blade package. The inner edge extends from an inner rim of the grinding blade package to the outer rim. The rear edge is exposed and extends in a leading manner from the inner rim to the outer rim of the grinding blade package—with respect to a direction of rotation.

Abstract: A fan-type grinding wheel which can be driven in rotation in a direction of rotation comprises, on an annular rim region of a support plate, grinding blades which are configured in the form of a triangle. The outer edge of each grinding blade defines a portion of an outer rim of a grinding blade package. The inner edge extends from an inner rim of the grinding blade package to the outer rim. The rear edge is exposed and extends in a leading manner from the inner rim to the outer rim of the grinding blade package—with respect to a direction of rotation.

Abstract: A tool exhibits a carrier part and a disc-shaped working part for chip-forming machining. The two parts are detachably connected with each other by means of a coupling part and a counter-coupling part that inter-lock. They exhibit convex and concave wall sections adapted to each other. Moreover, there is created a latch-in connection by an inside hexagon aperture and an outside hexagon.

Abstract: An abrasive cutting-off wheel for stationary use is comprised of two partial abrasive wheels which are joined to each other. Each of these partial abrasive wheels comprises an interior supporting disk and a radially adjoining interior layer of abrasive grain. It further comprises an exterior layer of abrasive grain and an exterior supporting disk which is located radially there-within. A reinforcement layer is provided between the supporting disks and the layers of abrasive grain. Another reinforcement layer can be disposed between the supporting disks and the interior layers of abrasive grain.

Abstract: An abrasive cutting-off wheel for stationary use is comprised of two partial abrasive wheels which are joined to each other. Each of these partial abrasive wheels comprises an interior supporting disk and a radially adjoining interior layer of abrasive grain. It further comprises an exterior layer of abrasive grain and an exterior supporting disk which is located radially there-within. A reinforcement layer is provided between the supporting disks and the layers of abrasive grain. Another reinforcement layer can be disposed between the supporting disks and the interior layers of abrasive grain.

Abstract: In a tool comprising a supporting part and a disk-shaped working part for machining operation, the supporting part comprises a supporting face for the working part and a permanent magnet within the supporting face. The working part comprises a coupling member of ferromagnetic material which is movable into magnetically clinging connection with the permanent magnet upon application of a counterpart supporting face to the supporting face.