The present invention relates to a honing tool having a tool body in lightweight construction, and at least two radially feedable hone strips, the hone strips being radially feedable via a rack-and-pinion gear, the rack-and-pinion gear comprising a central toothed shaft adapted and arranged to interact with racks associated to the respective hone strips to feed the hone strips, wherein the honing tool comprises a pneumatic measuring device for in-process diameter measurement of a diameter of an opening to be machined in a workpiece.

A honing strip for use in a honing tool for machining an inner surface of a bore includes a cutting layer carrier that carries, on an outer side, a cutting layer including cutting grains bound within a bond and an abrasive working surface that engages on the inner surface of the bore, wherein the honing strip defines a longitudinal direction (L) to be oriented parallel to a bore axis and the working surface extends in a width direction (B), perpendicular to the longitu-dinal direction, between a first side surface and a second side surface of the cutting layer, and the working surface has a generally convex macroscopic form with at least two macroscopically planar facets of different orientation which transition, along edges running in the longitudinal direction, to an adjacent facet or a side surface.

A honing tool (100) for machining an inner face (322) of a bore (320) in a workpiece (300) with the aid of at least one honing operation comprises a tool body (110) that defines a tool axis, and an expandable cutting group (330), attached to the tool body, having a plurality of radially feedable cutting material body carriers (150) that each cover a circumferential angle range and are feedable radially with respect to the tool axis by means of a cutting group feeding system assigned to the cutting group. Each cutting material body carrier carries, on its radial outer side, a plurality of narrow cutting material bodies (140) configured as cutting material strips (140-1, 140-2, 140-3, 440-1, 440-2) that are narrow in the circumferential direction and have a width in the circumferential direction that is small compared with the axial length of the cutting material strips. The cutting material bodies are arranged at a mutual spacing from one another. An elastically resilient intermediate layer (160) is arranged in an intermediate space between a cutting material body (140) and the cutting material body carrier (150) carrying the cutting material body, said intermediate layer (160) filling the intermediate space between the cutting material body and the cutting material body carrier. A preferred field of application is the honing of cylinder surfaces in the production of cylinder blocks or cylinder liners for reciprocating piston engines.

A honing tool includes a tool body which is tubular at least in certain portions and includes a cutting region with at least one honing stick receiving opening which is continuous from the interior of the tool body to the outside and is intended for receiving a honing stick, wherein dimensions of the honing stick receiving opening and of the honing stick are matched to one another such that the honing stick is received radially movably, and substantially without play in the circumferential direction of the tool body, between boundary surfaces of the honing stick receiving opening. The honing tool comprises a honing stick retaining system designed such that the honing stick is held in the honing stick receiving opening by the honing stick retaining system.

A polishing tool unit (1) includes a brush-shaped grinding stone (4) and a tool holder (2). The tool holder (2) includes a shank (2a), a sleeve (6), a gear screw (30), and a nut (36). The nut (36) is screwed onto a bolt portion (34) of the gear screw (30). The brush-shaped grinding stone (4) is connected to the front side of the nut (36) and held by the tool holder (2). The gear screw (30) is rotatable relative to the shank (2a) and the sleeve (6) about the axis (L). While rotation of the nut (36) about the axis (L) is regulated, the gear screw (30) is rotated, whereby the nut (36) is moved and the protruding amount of linear grinding members (3) is adjusted.

A honing brush is provided comprising a brush hub having a face wherein the face has at least one or a plurality of two or more outwardly projecting bristles having a length that is from about 15 millimeters to about 25 millimeters, a grit size of about or greater than 240 grit to about 800 grit, a diameter of from about 0.2 millimeter to about 0.8 millimeter, and wherein the plurality of bristles are arranged in either a non-tufted bristle arrangement or a tufted bristle arrangement, and wherein each of said bristles is made of a polymer material.

A honing tool has a tool body and shells disposed on the tool body. Honing stone sets each provided with two or more honing stones are provided. The shells each support one of the honing stone sets. Guide bars of the honing tool are placed against the bore and a portion of the bore is conically honed with decreasing stroke of the honing tool, wherein a lower reversing point of the honing tool remains substantially unchanged. Honing is terminated as soon as an upper reversing point has reached a predetermined terminal value. Alternatively, a portion of the bore is conically honed with a constant stroke of the honing tool, wherein reversing points of the stroke of the honing tool remain substantially unchanged and a feeding force pressing the honing stones against the bore is controlled as a function of a position of the honing tool in the bore.

Disclosed is a tool system including a drive for driving a tool holder including an electromagnetic generator for generating electrical energy from inertial energy of the tool holder. The tool holder may be driven in rotation, wherein the electromagnetic generator comprises a rotor part, which is rotatably mounted on the tool holder, and a stator part on the tool holder cooperating with each other for generating a voltage by electromagnetic induction. Alternatively, an axially movable inertial mass can be used for utilization of an oscillating linear movement.

Disclosed is a tool system including a drive for driving a tool holder including an electromagnetic generator for generating electrical energy from inertial energy of the tool holder. The tool holder may be driven in rotation, wherein the electromagnetic generator comprises a rotor part, which is rotatably mounted on the tool holder, and a stator part on the tool holder cooperating with each other for generating a voltage by electromagnetic induction. Alternatively, an axially movable inertial mass can be used for utilization of an oscillating linear movement.

A method is proposed for honing conical bores.