Abstract: A cutting plate for rotating tools includes a major cutting edge connected to a minor cutting edge in a radial extension thereof over a cutting corner. A common face joins a longitudinal side of the major cutting edge and the minor cutting edge, while a major flank or a minor flank joins the other side of the major and minor cutting edges. The flank face form a wedge angle The tool is supported on a boring wall with low friction to enable vibration-free machining. A support land near the minor cutting edge has two interspaced support edges. The support edges have the same radial distance from the tool axis over their entire length. The support edges are oriented parallel to the tool axis and the support land has a flat surface parallel to the tool axis.

Abstract: A solid drill bit for machine tools. has a bit body and two movable inserts located a radial distance apart in insert seats of the bit body. The inserts have a rectangular or quadratic contour, project axially over the bit body with their major cutting edges and overlap in their working area. The outer movable insert projects radially beyond the periphery of the bit body with its outer cutting edge corner and with the adjoining minor cutting edge. Starting from the cutting edge corner, the minor cutting edge is inclined in the direction of the bit body at a setting angle of less than 3.2 °. The minor cutting edge has a guiding edge that is slidingly supported against the wall of the bore over at least part of its length due to a radially outwardly oriented thrust force.

Abstract: A double or multiple-edged drilling tool has a base body rotatable about a drilling axis, and at least two plate seats arranged on the front face for accommodating identical interchangeable cutting plates. The cutting plates each have a machining face, and a clearance face adjoining a principal cutting edge forming a cutting wedge, and a seat face facing away from the clearance face. A guiding land adjoins radially outwardly through each edge the machining face, the clearance face and optically the seat face. The cutting plates each have a hole for a retaining screw which is screwed into a threaded bore at the front face of the base body. The holes are aligned with their axis perpendicular to the clearance face of the associated cutting plates the threaded bores are aligned inclined to the drilling axis and inclined to each other in the base body.

Abstract: A combination tool including a base body with several reaming blades each having a chamfer and a guide surface, arranged around the circumference of the base body, for reaming a cylinder bore. The combination tool also has at least one grooving blade arranged axially offset from the reaming blades and which may be extended radially relative to the base body. The combination tool is provided with two guide strips, arranged in the base body, at an angle to each other, between two reaming blades which are adjacent in the circumferential direction and displaced axially relative to the above in the direction of the grooving blade.

Abstract: The invention relates to a device for releasably connecting two coaxially aligned tool parts (1, 2) which can be axially pressed against each other on separating surfaces (36, 38) that face each other with a clamping device. According to the invention, at least one of the separating surfaces (38) is divided into several axially rigid and torsionally soft bearing segments (50) which are spaced in a peripheral direction, in order to dampen the torsional oscillations that occur during the work process and reduce noise.

Abstract: The tensioning mechanism (18) comprises a clamp bolt (28), arranged in a displaceable manner in a transverse bore (26) in the fitting plug (12) and two diametrically opposed retainers (34, 36) in the second component (14) which engage with an axially facing internal or external cone against a complementary internal or external cone on the clamp bolt (28) and, during tensioning, are tensioned with the same in a wedge fashion. According to the invention, the clamp bolt (28) comprises a frustum-shaped external cone (40), the base diameter of which is smaller than the diameter of the guide surface (62) thereof in the transverse bore (26).

Abstract: The invention relates to a machine reamer, with a shaft-like base body (10) and a reaming head (12), projecting axially from the front face of the base body. According to the invention, the reaming head is in the form of a one-piece exchangeable cutting tip (12), which may be chucked into a tip seat (14) on the front face of the base body (10), in a coaxially self-centering manner, in order to maintain a high precision coaxialism, despite low material and construction requirements.

Abstract: A tool head for use in machine tools comprising a base body coupled to a machine spindle, comprising at least one tool-receiving means for a cutting tool, and comprising a rotatable slide mechanism, which eccentrically carries the tool-receiving means, and is rotated about an eccentric axis parallel to the base-body axis with respect to the base body in order to facilitate an adjusting of the cutting radius of the cutting tool. A second rotatable slide mechanism is provided which carries a second eccentric tool-receiving means, and is rotated about a second eccentric axis parallel to the base-body axis with respect to the base body in order to facilitate an adjusting of the cutting radius of the respective cutting tool. Furthermore, transmission means is arranged in the base body to facilitate a simultaneous driving of the two rotatable slide mechanisms.

Abstract: The tool has a tool shank (which may be hollow) (14), whilst the machine spindle has a connecting sleeve (20) containing a recess (18) to accommodate the tool shank. A clamping mechanism (22) is located in the area between the tool shank (14) and the connecting sleeve (20). This mechanism has at least one clamping element (24″), with radial movement, which acts as a wedge drive, providing axial clamping movement between the tool shank (14) and connecting sleeve (20). The clamping mechanism comprises an actuating nut (26), which screws onto an exterior thread (28) on the connecting sleeve (20) and is coaxial in relation to the spindle axis. During the clamping procedure, the axial movement of the actuating nut can be converted into the radial movement of the clamping element (24″), with the help of at least one connecting link (30″).

Abstract: The invention relates to a drilling tool for machine tools and to a method for the production thereof. The drilling tool has at least one chip conveyor groove (16) and at least one functional channel (20). In order to produce the body of the drill (10), the wall of a tubular metal blank is simultaneously impinged upon by substantially radially oscillating form-giving forces in several forming sections spread over the periphery, moving in an axial direction along the surface of the blank, whereby at least one chip conveyor groove (16) is shaped and at least one functional channel (20) is formed. When the chip conveyor grooves (16) are formed on at least two interspaced forming sections in a peripheral direction in the wall of the blank (50), the parts of the wall in the area of two opposite-lying chip conveyor grooves (16) come to rest against each other in a sealed manner, defining at least two functional channels (20, 24) on the inner surfaces thereof.

Abstract: A cutting insert shapes metallic workpieces by chipping. The cutting insert is especially suited for use in solid drills or double-bit cutters. It has at least one cutting edge which is delimited by a chipping face and a flank extends between two cutting corners. The cutting edge includes two sections which form an obtuse angle and in the area of a roof-shaped tip merge into each other. The chipping face has a raised shaped chipping element which extends from the inside of the chipping face as far as the cutting edge, from where it reaches beyond the roof-shaped tip partially across the two sections of the cutting edge. The cutting edge sections and the adjoining chipping faces include a step delimiting the shaped chipping element, the edges of which step serve as additional cutting edges of the shaped chipping element.

Abstract: A tool head for use in machine tools includes a base body, a tool shank adapted to be coupled to a machine spindle and protruding axially over the base body, at least one working slide adapted to be displaced essentially transversely with respect to a base body axis, and an adjusting motor disposed in the base body and acting upon the working slide in the direction of displacement by a transmission. In order to attain a compact, easily assembled, and safely operating construction, the transmission includes an output shaft aligned coaxially with respect to the axis of the base body and carrying a drive sprocket which meshes with a tooth rack on the side of the working slide. The adjusting motor also includes a driven shaft aligned with the output shaft on the transmission side.

Abstract: A drilling tool includes a tool head having at least one chip groove and a tool shank. A slotted sleeve is placed on the tool shank and closely surrounds the chip groove. The edges adjacent the slot lie on solid material of the tool shank. The chip grooves and the sleeve form channels for carrying away the chips removed at the workpiece machining base. Owing to the slot, the sleeve can be gently spread apart and pushed onto the tool shank from the end having the enlarged tool head.

Abstract: A drilling tool for machine tools includes a drill shank provided with a radially outwardly projecting feed helix. The drilling tool also includes a drilling head disposed at the end of the drill shank and having two segment sections which are delimited radially outwardly by partially cylindrical peripheral surfaces and separated from each other by axially parallel chip grooves which are adjacent in the peripheral direction. The drilling head also includes at least two cutting plates disposed at different radial spacings from a drilling tool axis and each having a cutting edge projecting beyond the drilling head. The chip grooves are delimited on the side of the cutting plates by at least one axially parallel radial chip-deflection surface and by a chip-guide surface disposed on the adjacent segment section.

Abstract: A process finishes the surface of rotationally symmetrical workpieces. The workpiece is pre-machined and hardened with a stock allowance and is then finished in two steps in a device in which it is clamped only once. The largest part of the stock allowance is first cut by a hard turning process and the residue is then ground down to the actual size of the workpiece to be manufactured. The device for performing this process includes a motor-driven workpiece spindle for receiving the workpiece having a spindle head. The workpiece spindle has at least one motor-driven grinding spindle adapted to accept a grinding tool. The grinding spindle generally is axially aligned with the workpiece spindle or the workpiece thereon. The workpiece spindle can be fitted with a lathe tool having a cutting edge for hard turning.

Abstract: A drilling tool comprises a drill tip, a chip removal part which axially adjoins the drill tip, and a drill shank which is positioned at the end of the chip removal part. Two chip flutes extend in a helical manner over the chip removal part starting at the main cutting edges of the drill tip. The drilling tool is separated into two parts in the region of the chip removal part and consists of a base body which is connected to the drill shank as one part and an exchangeable tip made of a harder material which is connected to the drill tip as another part. The exchangeable tip is connectable to the base body in a form-fitting and/or frictional-fitting manner at an axial separation point.

Abstract: A device for machining of workpieces or objects, comprises an elongated tool which rotates about its longitudinal axis and is provided with a shaft which can be coupled to a drive unit and with a chip-removing head connected to the shaft. In order to ensure that even a very long tool can be used in deep hollows in the workpiece in a stable and vibration-free way, a sleeve positioned between the shaft and the chip-removing head is connected at one end to the chip-removing head so that it cannot slide or rotate. The tool can be clamped in the chuck of a hand-held drive unit, preferably with a suction and flushing device connected in series, and used to suck away chips through the cavity in the sleeve and to pump cooling fluid onto the cutting site.

Abstract: The invention relates to a position drive for a tool head for use in machine tools. The tool head comprises a base body (12), a tool shank (16) which protrudes axially over the base body (12) and is coupleable to a rotating machine spindle (14), and a thrust member (18) which is movable with respect to the base body (12) and which serves to move at least one tip holder or cutting tool (76). Further, an electric motor arrangement (24), which is coupleable to the thrust member (18), and a power supply device (26) for the motor arrangement (24) are positioned on the base body (12). In order to ensure a compact construction having an efficient motor arrangement, a hollow shaft (50) is borne rotatable about an axis of the base body (12), which is concentric with respect to a displacement axis (52) of the thrust member (18), and the hollow shaft (50) has an internal thread which engages in an external thread (42) of the thrust member (18).

Abstract: The invention relates to a process and device for detecting and/or compensating for static jointing and wear errors in the fine drilling of workpieces by means of an adjusting tool (18) bearing an adjustable cutting insert (28) and capable of being clamped to a machine shaft (14). According to the invention, before a drilling or a series thereof is made, the diameter of the circle of travel of a radially outer cutting edge (44) of the cutting insert (28) is measured on the clamped adjusting tool with the machine shaft (14) rotating and evaluated within the adjusting tool (18) for adjustment purposes.

Abstract: The invention concerns a facing-tool head with a main body (10) which can be attached to a machine spindle, a work slide (14) which can be moved along the main body (10) essentially at right angles to the axis (12) of the spindle and which has a tool-holder with a fixing mechanism (26) to hold a tool in place, and a mechanism for adjusting the work slide (14). This adjustment mechanism includes a central, longitudinally movable adjusting rod (18) which passes through the hollow machine spindle (44) into the main body (10) and gearing means (20) which translate the longitudinal motion of the actuator rod into the transverse motion of the work slide (14).