Abstract: A tool assembly in which a tool is removably secured to a tool holder. A sleeve of the tool is first fitted onto a shaft of the tool holder and then, by symmetrically radially expanding the shaft, the tool is secured to the tool holder.

Abstract: A boring and turning mill, comprising a nonrotatable tool ram, a rotationally drivable tool spindle in the tool ram, an auxiliary head which can be attached to the tool ram in a nonrotatable manner, two work slides arranged in opposition to each other and displaceable and movable in a radially adjustable manner in the auxiliary head, each slide having a respective tool receptacle, and a drive connection to the slides for effecting a radial infeed movement of the work slides, between the tool spindle and the work slides. The drive connection is a threaded spindle which engages threads on the work slides, so that axial movement of the threaded spindle causes radial movement of the work slides.

Abstract: A tool holder is equipped with a tip run-out correction mechanism for correcting run-out of the tip of the tool. The tip run-out correction mechanism includes an annular stepped portion formed on a cylindrical support portion of a holder body; a ring member rotatably fitted onto the annular stepped portion; an eccentric cam disposed within the ring member, the eccentric cam extending radially through the ring member and being rotatable about a radially extending axis; and a pin disposed within the ring member to be movable along a direction parallel to the center axis of a flange portion of the holder body. One end of the pin is in contact with the eccentric cam, and the other end of the pin is in contact with a rear end face of a clamp sleeve which clamps a tool inserted into a chuck sleeve of the holder body.

Abstract: The instant invention is directed to an adjustment device for a multiple insert cutting tool with adjusting elements using a wedge to adjust the position of an insert in a tool body pocket through an intermediate component having expansion elements. The intermediate component is disposed in a cavity which is at least partly contiguous with a pocket containing an insert. The intermediate component engages the insert to be adjusted and, when expanded, adjusts the position of the insert.

Abstract: A tool holder is equipped with a tip run-out correction mechanism for correcting run-out of the tip of the tool. The tip run-out correction mechanism includes an annular stepped portion formed on a cylindrical support portion of a holder body; a ring member rotatably fitted onto the annular stepped portion; an eccentric cam disposed within the ring member, the eccentric cam extending radially through the ring member and being rotatable about a radially extending axis; and a pin disposed within the ring member to be movable along a direction parallel to the center axis of a flange portion of the holder body. One end of the pin is in contact with the eccentric cam, and the other end of the pin is in contact with a rear end face of a clamp sleeve which clamps a tool inserted into a chuck sleeve of the holder body.

Abstract: A circulating tool for cutting of workpieces including a carrier element that bears at least one cutter blade insert in an exactly positioned manner. A device is provided for adjusting the position of the insert relative to the carrier element and a clamping device is provided using a clamping claw, with which the insert can be fixed in the adjusted position relative to the carrier element in that the clamping claw presses the insert flat against a support surface. In order to be able to use indexable inserts of any form without providing weakening openings and to obtain the greatest possible measure of free space for configuring the tool and shaving removal with a space-saving configuration of the adjusting and clamping apparatus, the insert is accommodated in a pocket of the clamping claw and the support surface is directly constructed on the carrier element.

Abstract: An adjustable deburring tool has a cutting head and a shank. The cutting head has a projecting ridge with a recessed portion. The shank has a groove that communicates with an open ended and open sided threaded bore. The ridge is slidably located in the groove with an adjusting screw screw-threaded in the threaded adjusting bore and partially located in the recessed portion of the ridge so that rotation of the adjusting screw causes lateral movement of the cutting head thereby adjusting the cutting diameter of the deburring tool.

Abstract: A tool for machining workpieces, having a parent body which can be expanded at least zonally, having at least one geometrically defined cutting edge projecting beyond a circumferential surface of the tool, and having a setting device influencing the radial distance of the cutting edge from the center axis of the tool. The setting device has a setting element, and an adjusting device which sets the degree of bending of the setting element. The setting element is inserted into the parent body of the tool in such a way that, when the bending of the setting element is varied, the radial distance of the cutting edge is varied.

Abstract: A variable radii cutter which eliminates the need for having to provide a wide assortment of cutting tool bits for continuously imparting various sizes of radii on a workpiece is disclosed. In one embodiment, the variable radii cutter has a cutter in the form of a plurality of blades which mechanically expand and contract in response to one of an automated adjustment mechanism and a manual adjustment for accommodating various sizes of radii. In another embodiment, a ball made of rubber having an abrasive disposed thereon is used as the cutter and operates in the same manner as described above.

Abstract: In a fastener of a post-installation type which is embedded after a drilled hole is provided at concrete structure, a sleeve (2) and a plug (3) press-fitted to the sleeve are positioned by convexoconcave engagement between a projecting portion at an inner periphery of an expansion portion (6) and a recess groove (11) at a tip end of the plug (3) before installation, and therefore the separation therebetween is prevented. After installation, the projection portion at the inner periphery of the expansion portion (6) expanded is again engaged with the recess groove (12) of the tip end of the plug (3). By this positioning effect, the fastener performs an effect for preventing a loosening between the sleeve and the plug against the vibrations.

Abstract: A boring head, essentially consists of a body (1) provided with a housing (2) for receiving two tool-holders (3), capable of being radially driven via a moving device (4), and of element (5) for locking the tool-holders (3) in operational position. The boring head is characterized in that the element (5) locking the tool-holders (3) in operational position consists of a single clamping device simultaneously acting on the two tool-holders (3) and on the body (1). The invention is more particularly applicable in the field of machine-tool accessories, in particular digitally controlled machines, of machining plants and adaptable cells and workshops.

Abstract: A boring and turning mill, comprising a nonrotatable tool ram, a rotationally drivable tool spindle in the tool ram, an auxiliary head which can be attached to the tool ram in a nonrotatable manner, two work slides arranged in opposition to each other and displaceable and movable in a radially adjustable manner in the auxiliary head, each slide having a respective tool receptacle, and a drive connection to the slides for effecting a radial infeed movement of the work slides, between the tool spindle and the work slides. The drive connection is a threaded spindle which engages threads on the work slides, so that axial movement of the threaded spindle causes radial movement of the work slides.

Abstract: The invention relates to a drilling tool comprising a tool holder, on whose front face interchangeable cutting attachments are fixed and which has a shaft part on the opposite end to said attachments and an adjusting device for minimizing the tolerance measurement determined by the drilling system. In order to improve the aforementioned adjusting device, the invention is characterized in that the tool holder (1) has groove-shaped recesses (5, 8), which lie on respective diametrically opposed sides and which are eccentrically arranged on a plane that is perpendicular to the longitudinal axis of the tool holder. Said groove-shaped recesses have a half-cylinder extension on each of the sides facing the longitudinal axis of the tool holder. A bolt (2, 3), whose dimensions correspond to the size of the cylinder, is located in each extension. The first bolt (2) is connected to a tapered adjusting element (9) using a double-threaded screw (11) which is positioned radially in relation to the tool holder (1).

Abstract: A tool having a base body which carries cutters for machining bores in a workpiece, the cutters being arranged coaxially with one another. The base body further has at least one lifting element, with which the base body can be moved from an eccentric position in relation to an axis of the workpiece bores into a central position, in which the axis of the tool coincides with the axis of the workpiece bores.

Abstract: A hollow milling tool which is adjustable through a wide range of cutting diameters while maintaining a constant radial rake angle, constant axial rake angle, constant axial clearance angle, and a constant radial clearance angle. The tool includes at least one slot, and preferably three or more slots, disposed at a negative axial rake angle with respect to the centerline of the tool for receiving and mounting a cutting member. Each slot intersects the front axial face of the tool at a location ahead of a plane including the centerline of the tool. A cutting member is a holder for a formed carbide cutter insert. The insert is mounted in the holder such that the forward face of the insert forms an angle with the forward surface of the insert holder which is at least equal and opposite to the negative axial rake angle of the slot so that the face of the insert has either zero or positive axial rake.

Abstract: A thread-cutting device with a thread-cutting head that rotates and includes a tool guide with at least two pairs of tool slides. The pairs of tool slides can shift radially relative to the axis of rotation and include cutting surfaces. The device also includes a propulsion element that rotates with the thread-cutting head. The propulsion unit includes spiral gear toothing that is indirectly or directly integrally engaged with the pairs of tool slides.

Abstract: A dual cutting insert boring tool having means for adjusting the distance between the two inserts in order to adjust the diameter of their cutting path.

Abstract: A cutting tool having a shank held in a chuck. Mounted in the shank is an insert holder and a carbide insert held therein. The insert holder extends radially beyond the shank, with the insert on its extended end. The insert can be adjusted as to radial extension, by swingable adjustment, and held in adjusted position by tightening the holder. A gear is provided for swinging the holder, and a visual dial is provided to show the position of adjustment.

Abstract: A radial-feed rotating drill tool having a tool holding fixture formed at an eccentric portion of a feed spindle eccentrically mounted in an external spindle. By rotating the feed spindle relative to the external spindle, a feed movement may be initiated with minimum expense. Further, because of the surface-contact mounting of the eccentric shaft portion of the feed spindle in the external spindle, mounting of the tool-holder without play is ensured.

Abstract: The invention relates to a friction and sinking cutting tool comprising a base member (2) to which a cutting blade (20) is exchangeably clampingly fixed by means of a clamping screw and which is adjustable in terms of its radial position by an adjusting member (40) through the intermediary of an adjusting means (30). The adjusting means (30) is a cutting blade carrier extending into a recess in the base member, and the adjusting member (40) is a differential screw which is in threaded engagement with the adjusting means. Alternatively, the adjusting means (30) can be a cutting blade carrier extending into a recess of the base member and the adjusting member (40) can be a ball member or clamping member which has automatic shape fitting engagement with a complementary recess in the adjusting means such that a movement of the adjustment member causes a movement of the cutting blade (20) in the same direction.

Abstract: A countersinking and deburring tool for deburring, chamfering, and countersinking of partially and fully penetrating holes with a rotationally actuated housing and at least one blade which can move within a housing shaft and perpendicular to the rotational axis of the housing, provides that, depending on the direction of rotation of the drive, the blade is withdrawn into the housing shaft or extended out of the housing shaft (reverser operation), and the displacement drive for the blade consists of a rocker which is mounted so that it can rotate in the housing and is rotationally actuated, which acts on the blade with at least one actuation pin. According to the invention the rocker's rotary actuator consists of at least one centrifugal weight arranged in the housing so that it can move diametrically, whose diametric displacement in the housing is converted into a rotational motion on the rocker through a form-fit guide.

Abstract: A spot facing mechanism employs a self centering chuck, a stationary mandrel and housing. Axial feed controls are also stationary when the apparatus is operational. Incremental radial feeding of the tool head is provided, with the degree of feed being adjustable between zero feed and maximum feed. Radial feed rate adjustment controls remain stationary while the apparatus is operating, enabling adjustment of feed rate without having to stop the machine.

Abstract: High speed machining of parts is greatly enhanced when the axial alignment between the machining tool, its tool holder assembly, and a tool driver assembly can be precisely maintained, preferably within about one ten thousandths of an inch, in order to achieve the utmost in machining precision in the parts being machined. In order to maintain this desired degree of alignment, the machining tool is mounted in an angularly adjustable holder assembly which mates with a complementary socket that forms a part of the tool driver assembly. The tool holder assembly can also be used to move the tool radially sideways in a rectilinear fashion relative to the tool driver assembly, if desired. The tool holder assembly, besides being able to adjust the alignment of the tool relative to the tool driver assembly, is also operative to securely clamp the tool to the tool driver assembly.

Abstract: A boring tool for the fine finishing of surfaces of holes having at least one cutting bit and at least one guide ledge which are introduced and fixed in place in grooves arranged in the circumferential surface of the base body of the boring tool, characterized by the fact that a setting device is provided which is positively coupled with at least two cutting bits associated with each other; that the cutting bits are arranged displaceable by means of the setting device in the base body with respect to the circumferential surface; that the association of the cutting bits consists in that they are displaceable in opposite directions, with respect to the axis of rotation or center line of the boring tool; and that the setting device in each case displaces one cutting bit into a working position and the other cutting bit into a position of rest.

Abstract: For the purpose of rigid connection of the cutter holder (9) to the tool carrier (5), the tool carrier (5) has a driving key (11) on its end side, which driving key is inserted into a corresponding transverse groove (13). The driving key (11) has a specified excess size compared to the transverse groove (13), such that when a setscrew (10) is tightened the tool carrier (5) and the cutter holder (9) are elastically deformed. Laterally next to the transverse groove (13) the surface of the cutter holder (9) is supported on the tool carrier (5).

Abstract: It is the object of the present invention to drill a hole and, at the same time, transmitting an application force exactly to an undercutter for forming an undercut space in the cylindrical wall of the hole at a position near the hole bottom. An apparatus according to the present invention includes a rear circular member 1, a sleeve 10 supported in telescopic engagement with the rear member 1, an undercutter 5, and a front annular member 15 linking and movable with the undercutter 5. The sleeve 10 has an inner flange 13 forward from the rear member 1. An application force transmission mechanism 18 comprises a cam 20 supported by the rear member 1. The cam 20 has a pair of steps 21 and 22. The transmission mechanism 18 also comprises a first impact transmission rod 23 extending between the cam step 21 and sleeve flange 13, and a second impact transmission rod 24 extending between the step 22 and front member 15.

Abstract: A tool head, in particular a fine adjustment head for use in machine-tools, may be coupled to a rotary machine spindle (26) and has a slide (16) that may be adjusted transversely to the axis (12) of the base body and is provided with a projecting tool-receiving part (14) on its front face. A measurement arrangement (18) is provided for directly measuring the adjustment path of the slide (16) in relation to the base body (10). The tool head further has an adjustment motor (20) that acts on the slide (16) in the direction of adjustment and an external current supply arrangement (22) for electronic components integrated into the tool head and for the adjustment motor (20). In order to obtain a compact design with high adjustment precision, the adjustment motor (20) is arranged with its cylindrical housing (45) in a recess (46) of the base body (10) that extends transversely to the direction of adjustment of the slide (45) and to the axis of the base body.

Abstract: The invention is basically a device that allows an individual to align the broaching tool more accurately. The invention begins with a base plate that is attached to the retriever base or puller head of the broach machine. Within the base plate is a large broach stick opening through which the retriever end or the puller end of the broach tool is placed. Attached to the base plates are four rails around the large openings. The adjustment plate is a plate that fits on top of the base plate and within the area created by the four rails. In the center of the adjustment plate is a large opening for the attachment of the retriever end or puller end of the broach tool. Also the adjustment plate has openings for attachment through bolts to the base plate. In the four rails there are also openings for set screws that pass through the rails and make contact with the adjustment plate fit within the area created by the rails.

Abstract: The invention is an apparatus for adjusting the position of a cutter cartridge mounted on a machine tool head using noncircular adjustment pins that provide full linear contact between the machine tool head and the cutter cartridge.

Abstract: In a drilling device for producing drilled holes with an undercut, in particular in facing panels of stone, ceramics, concrete or similar materials a drive motor of a drilling shaft is mounted so as to swivel, is displaced outward by a sloping surface, and is driven by a lead screw gear unit to perform a precession movement.

Abstract: A system for fastening a dowel to a wooden element includes a drilling assembly for forming a blind hole in the wooden element which includes a first portion which is cylindrical and a second portion which tapers outwardly in frusto conical shape from the lower end of the first portion. A dowel having initially a cylindrical shape is inserted into the blind hole and then expanded outwardly into the frusto conical portion. The expansion can be carried out by a tapered plug which is forced into the end of the dowel, by a wedge member which is forced into slits in the end of the dowel or by expansion of the dowel itself from an initial compressed position by absorption of moisture from an adhesive.

Abstract: An apparatus for machining an end of a tube clamped within the apparatus and including a tool head rotatable about the axis of the tube, a plurality of tool holders including tools arranged about the tool head and radially moveable with respect to the axis, a plurality of push rods uniformly positioned about the tool head and axially parallel to the axis including oblique toothing positioned about one end thereof and a frame connected to the push rods and being displaceable along the axis to provide axial movement to the push rods. A transmission device including toothing for engaging the toothing on the push rods is positioned between the tool holders and push rods for imparting radial movement to the tool holders and tools connected thereto based upon axial movement of the push rods.

Abstract: Preliminary to cementing a prosthesis in a hole in an intramedullary bone, annular groves are formed in the bone around the hole by cutters radially extensible in opposite directions from a tool driven by a cannulated rotary power unit. A control rod extends through the power unit and through a cannulated shank of the tool held by the power unit. A control unit mounted on the power unit moves the control rod lengthwise to cause projection and retraction of the cutters while rotating to groove a bone as well when not rotating.

Abstract: A boring apparatus which includes a rotatable cutting head used to cut a hole in a workpiece. The cutting head is mounted on an axially movable support, and is rotatable about and reciprocally movable along the axis between a forward cutting position, to engage and cut the workpiece, and a rearward position spaced from the workpiece. Cutting is performed by a cutting blade which is spaced radially from the axis, and which is movable relative to the rest of the cutting head by a blade advance mechanism. During cutting operation, the blade advance mechanisms move cutting blade both forwardly and radially inwardly through the workpiece wall, in the same direction at which the blade is inclined. The hole is thus formed by lowering the cutting head and then rotating the cutting blade as the blade advance mechanism moves the blade at an angle through the workpiece.

Abstract: A boring tool comprises a rotating tool body, a tool slide transversely displaceable therein, a cutting plate arranged on the tool slide and a micrometer screw for adjusting the tool slide, this micrometer screw being mounted transversely to the axis of rotation of the boring tool so as to be rotatable and axially non-displaceable. The micrometer screw is mounted in the tool body at a distance from the tool slide and drives a drive slide displaceable transversely to the axis of rotation of the tool body. A transfer lever is pivotally mounted in the space between drive and tool slides and engages with one arm on the drive slide and with the other arm on the tool slide such that when the drive slide is displaced the tool slide is entrained in the opposite direction to the drive slide.

Abstract: The drilling apparatus for making a drilled hole with an undercut includes a drive device for rotating a hollow drilling shaft (3); a drill bit holder (23,38) held in the hollow drilling shaft (3); a drill bit (4,26) having a drilling head provided with laterally projecting cutting edges (25) projecting from the drill bit holder (23,38); a device for swivelling out the drill bit holder (23, 38) with the drill bit from a drilling center line (5) including at least one control element of the drill bit holder, a sliding sleeve (11) surrounding the drilling shaft (3) and a swivelling-out element (21,39) connected to the movable sliding sleeve and engaging the control element to swivel out the drill bit holder (23, 38); and a device for raising and lowering the drive device (2) together with the drill bit holder (23,38) and the drill bit (4,26). In one embodiment the swivelling-out element is a sliding block and the control element is a cam surface in a slot provided in the drill bit holder.

Abstract: A deburring tool, and a cutting tool blade and pivot member therefor. The arbor is formed with a cutting blade recess for a cutting tool having a flat resilient blade. The blade is releasably secured in the recess by a pivot member extending transversely through the recess. The cutting tool blade includes an open-ended slot having an arcuate closed end and one or more flat surfaces. The pivot member has a shank portion with arcuate and flat sides, and is selectively rotatable in the cutting blade slot between a locked position preventing separation of the blade from the pivot member, and an unlocked position permitting separation of the blade and pivot member.

Abstract: A high speed rotary boring tool has a plurality of cutter inserts evenly spaced around the circumference of a boring bar. Each cutter insert is individually adjustable so that its cutting tip is spaced a desired distance from the tool rotational axis. Each cutter insert is mounted so that its leading face has a zero rake angle in the axial direction, and a negative rake angle in the radial direction. The cutting tip on each insert is defined by two chamfer surfaces on the intersecting edges of the insert leading face, such that each chamfer surface acts as a chip-deflector surface. The boring tool is designed for cutting action during axial feed into the hole and also during axial feed out of the hole.

Abstract: An adjustable cartridge assembly is provided for a cutting head of a machine tool. The cartridge fixes the back rake angle of the cutting blade so that mere radial adjustment is required to adjust the blade. Moreover, the cartridge includes a support portion that matingly receives the blade and provides support along three contiguous surfaces.

Abstract: A removable boring tool cartridge has a cylindrical tool carrier axially adjustable in a bore in a cartridge housing by means of an adjusting screw having a head rotatably adjustable in the bore of an annular thrust bearing, which is secured around the outside thereof in one end of the bore in the housing by an injection molded plastic safety ring. The adjusting screw has an externally threaded shank that projects in radially spaced coaxial relation into a bore in one end of the tool carrier, to the opposite end of which is fastened an insert holder. A plastic sleeve nut is injection molded into the radial space in the bore in said tool carrier to surround and have driving engagement with the externally threaded shank of said screw.

Abstract: In a machine reamer a cutter is guided in a guide slot in the main body and is supported at one end against a pin-shaped axial adjuster. The axial adjuster is a hollow cylindrical stop pin whose slotted pin head can be radially expanded by means of a countersunk head screw, whereby the cutter supported against it is sensitively moved in the direction radial to the axis of the pin.

Abstract: A deburring tool including an elongated arbor formed with a cutting blade recess, a unitary cutting tool having a cutting head, a trailing terminal portion, an elongated, flat resilient blade extending therefrom which is received in the recess and a mounting mechanism securing the cutting tool to the arbor. The mounting mechanism includes an adjustable screw threadably mounted in the arbor transversely of the longitudinal axis of the arbor for fixedly engaging the terminal portion of the cutting tool. The mounting mechanism also includes an adjustable locking screw extending transversely through the recess and the blade to define a pivot point about which the cutting tool can pivot and has a non-threaded hemispherical portion which terminates in a flat edge. The resilient blade includes an open ended slot having an arcuately closed end which presents a flat at one end of the arc of the slot.

Abstract: A boring tool comprises a body having, at a free end thereof, two insert holders which are radially adjustable by displacement relative to a groove defined by two opposing boundary surfaces and accommodating two elongate guide lugs on the insert holders. The groove merges, at opposite, parallel edges, into first support surfaces, which are each inclined relative to the tool axis, in a preferred embodiment in a rearward-outward direction from the edge so as to form an acute-angled wedge-shaped portion of material between each of the first support surfaces and a respective groove-defining surface. The support surfaces are each adapted to cooperate with similar, second support surfaces on the holders, the other support surfaces are similarly inclined, more specifically relative to boundary surfaces of the guide lugs, at substantially the same acute angle as the angle between cooperating surfaces of the wedge-shaped portions of the tool body.

Abstract: The invention relates to an improved micrometric device for finishing bores of the type having a substantially cylindrical body in the interior of which are mounted displacement devices that actuate on a tool holder displaceable in the same direction as the radial component of the work force. The displacement devices are provided with a backlash suppression system and a movement transmission mechanism. The movement transmission mechanism is provided with a graduated drum coaxially mounted to a micrometric screw. The micrometric screw is axially and radially supported in relation to the body of the micrometric device by a support system. In accordance with the invention, on an upper threaded extension of micrometric screw, a cylindrical rod is mounted that incorporates at its upper end, an oblique portion or extension set off by an angle in relation to the longitudinal axis of micrometric screw.

Abstract: A cutting tool includes a rotary bar having an arcuate pocket in its side surface, and a segmental carrier arcuately slidable in the pocket to adjust the position of a cutting tip on a cutter blade. The carrier has a second arcuate pocket that slidably receives a segment-shaped shoe, such that the shoe can be arcuately adjusted to control or vary the back taper angle on the blade. The cutting blade is mounted flatwise on one face of the shoe, such that a corner tip on the blade projects beyond the profile of the rotary bar for use in reaming a hole in a workpiece. The adjustment axis of the shoe is coincident with the cutting tip on the reamer blade so that adjusting motions of the shoe do not disturb the position of the cutting tip achieved by arcuate adjustment of the carrier.

Abstract: The invention relates to an improved micrometric device for finishing high precision bores. The device has a substantially cylindrical body having a displacement system arranged in an interior thereof. The displacement device actuates on a tool holder which is then displaced in the same direction of the radial component of the workforce. The micrometric device is also provided with a backlash suppression system. In accordance with the present invention, the micrometric device has an upper cylindrical body mounted and fixed to a lower cylindrical body, both of which coaxially envelop a graduated drum. The graduated drum, in turn, is coaxially mounted and connected to a micrometric screw arranged longitudinally in the interior of the micrometric device. In the interior of the micrometric device, and connected to an upper extension of the micrometric screw, a conversion mechanism is arranged which changes a rotating movement of the micrometric screw into a linear movement of a movable crossbeam.

Abstract: An insert for chip removing tools has a housing (10) that can be inserted in a recess in the base body of a tool. A threaded sleeve (16) is rotatably mounted in the housing (10) so as not to slide under the effect of an axial force. A machining blade insert holder (14) is non-rotatably guided in the housing (1) and is provided with an adjustment thread (21) that engages the threaded sleeve (16). The machining blade insert holder (14) is axially moved by rotating the threaded sleeve (16) and carries a reversible machining blade insert (12) on its head (18) that projects beyond the housing (10).

Abstract: The invention concerns an adjustable tool for use in machine tools, with a slide (14) which can be fitted with at least one cutting tool and which can be displaced relative to the rotating main body (10) perpendicularly to the axis of rotation. The invention also calls for a device (20) for the direct measurement of the displacement of the slide (14), the slide being fitted with an electronically read measurement scale (24). This device comprises battery-powered data-processing electronics (20) and is located inside the main body (10). The displacement reading can be presented on a digital display (26) which is also mounted in the tool head.

Abstract: A tool holding fixture having a rotationally symmetrical holding body and a shaft that form one piece. The one piece has an axially directed first annular groove which is concentric with the shaft and is positioned in a transition area between the holding body and the shaft. The shaft has an annular collar with a flank which is inclined in a direction toward the first groove. The rotatable clamping ring encompasses the collar and engages the first annular groove. The rotatable clamping ring is seated on the shaft. The clamping ring has a second annular groove in which wedge-shaped sliding blocks are seated and are radially and axially moveable, but secured against canting within the second groove. The sliding blocks are supported on the inclined flank of the collar. A pressure screw is threadedly engaged within the clamping ring.

Abstract: A tool, in particular a fine-turning boring bar, for use in machine-tools, includes a shank part (16) which can be coupled to a rotating tool spindle, a head part (10) which is secured to the shank part (16) so as to remain fixed during rotation and which can be adjusted transversely with respect to the shank part (16), and a cutting support (20) which can be radially adjusted for coarse positioning purposes. Cylindrical fitting pins (28, 30) provided with radial face grooves (36, 38) are formed facing each other on the shank part (16) and the head part (10). A cross-coupling element (12) arranged between the front ends of the fitting pins (28, 30) has radially mobile pairs of claws (40, 42) which extend axially from both sides and which engage in mutually perpendicular face grooves (36, 38) in the fitting pins (28, 30). The two fitting pins (28, 30) also engage in mutually eccentric fitting holes (32, 34) of an eccentric sleeve (18) which can rotate with respect to the head part (10) and the shank part (16).