Abstract: A deburring tool includes: a body; and a cutting unit provided on an end portion of the body and including a blade part, where a first channel is provided inside the body, and when a fluid supplied from outside of the deburring tool through the first channel is injected into the cutting unit and presses the cutting unit, the cutting unit moves and a degree to which the blade part protrudes outwardly increases.

Abstract: A deburring tool with a deburring blade (9) for deburring borehole edges (3, 6) that have a straight or un-round shape, consisting of a base body (12) which is rotatably driven about its longitudinal axis (50), and at the lower end of which at least one blade holder (20) with at least one deburring blade (9) secured therein is mounted on a blade bearing (27) on the side of the base body so as to swivel vertically, and on the outer periphery of the blade holder (20) a control groove (31) which is open radially outward is arranged, into which the freely flexible end (30a) of a flexible spring (30) engages, the other end of said spring being clamped to the base body (12), wherein during the deburring process, the deburring blade (9) is swiveled away from the base body (12) at an angle (51, 52, 53) in relation to the longitudinal axis of the base body (12), and the blade axis (55) of the deburring blade (9) rests, spring-loaded, with its at least one cutting edge (39) against the borehole edge (3, 6) to be deburr

Abstract: The invention relates to a deburring tool for deburring edges (1, 1a, 1b), of any desired shape, of recesses in workpieces (19) using at least one cutting blade (2, 2a, 2b, 2?), wherein the deburring tool is in the form of a slotting and/or drawings tool which is rotated incrementally about its longitudinal axis and is driven displaceably in an oscillating manner in the direction of its longitudinal axis.

Abstract: Low profile reamers and methods of use are provided which can, in general, allow a hole to be drilled in bone. In one embodiment, a low profile retractable bone reamer is provided having an elongate shaft with a cutting element disposed on a distal end of the elongate shaft that can be configured to drill a hole in bone. The elongate shaft and cutting element can have first and second longitudinally separated portions that are movably coupled to each other. The reamer can be configured to move between a retracted configuration, in which a the reamer has a reduced, low profile configuration, and a non-retracted configuration, in which both longitudinally separated portions of the cutting element can be positioned adjacent to one another to form a single cutting element.

Abstract: A material removal tool with a cutting insert mounted in the seating pocket is disclosed. The translating bar is operably connected to the at least one radially pivotable arm by a mechanical linkage and translates under fluid pressure applied to one side of a piston head by an actuating fluid, where the actuating fluid is also coolant for the material removal tool. With the translating bar in a first position, the radially outermost edge of the cutting insert is radially inward from the first active volume, and with the translating bar in a second position, the radially outermost portion of the cutting insert is radially outward from the first active volume and the axially rearmost portion of the cutting insert is rearward of an axially rearmost portion of the arm. A method of removing material from a workpiece with the material removal tool, such as by backboring, is also disclosed.

Abstract: An insert for a deburring tool is used to machine openings of bores that are formed in metal work pieces. In an exemplary embodiment, the insert has an inward portion, a central portion connected to the inward portion, and an outward portion connected to the central portion. The central portion has a dovetail-shaped retaining feature that attaches the insert to the deburring tool.

Abstract: To produce rotationally symmetrical surfaces of a workpiece (10), the rotationally driven workpiece (10) is subjected to rotational machining. For this purpose, a tool is used (12), whose blade (16) is advanced in a circular arc motion (f). The blade (16) takes the form of a coaxial helix in relation to the rotational axis (A1) of the tool.

Abstract: The invention is a drilling device for providing a conically shaped cavity in materials primarily used for anchoring systems. The drilling device is comprised of a solid shank for attachment to a drill, a reverse thread section, and a cutting head. The cutting head includes a cutting tip, clean out flutes, extendable cutting blades mounted within an internal chamber of cutting head body, and means for extending the cutting blades. The extendable cutting blades project from the cutting head body radially when the reverse thread section is driven into the internal chamber of the cutting head. The reverse thread section interacts with the means for extending the cutting blades. This may include a pair of cams that are spring biased outwardly. The cams push against the backsides of the extendable cutting blades for driving them from the cutting head body when the drill device is counter rotated.

Abstract: Methods and devices for treating diseases and conditions that change the spacial relationship between the vertebral bodies and the intervertebral disks, or that cause instability of the vertebral column, or both, and a method and devices that allow the surgeon to access the intervertebral space to restore a more normal three-dimensional configuration of the space, with or without additionally fusing two adjacent vertebrae.

Abstract: A drill countersinking and seal groove machining tool to accommodate an accurate drill countersinking and seal groove machining operation. The linear compensator tool applies sufficient force to react to the drilling or seal groove machining process, but not so much force as to distort the work piece being drilled or machined. The tool ensures that the reactant force does not exceed the machine force override allowances. Varying spring rates and/or air pressures on the linear compensator system will accommodate most applications.

Abstract: The present invention relates to a drilling tool for chip removing machining, wherein the drilling tool comprises a shank and an attachment, wherein the shank and the attachment are integrated with each other, wherein the shank has a free end, wherein between the free end and the attachment is provided at least one adjustable cassette which is received in a cassette pocket of the shank, and wherein an indexable cutting insert for chip removing machining is received in the cassette. The cassette has a circular cylindrical peripheral surface, the cassette pocket has a circular cylindrical support surface which is adapted to cooperate with the peripheral surface, a screw is provided for pivotable anchorage of the cassette in the cassette pocket, and the cassette and the cassette pocket has a screw to effect rotation of the cassette in the cassette pocket.

Abstract: The boring tool having a basic body (2) in which a tool bit (27) is arranged which has a cutting edge (29) at a front end (27b). The basic body (2) has an opening (3) in which the tool bit (27) is pivotably mounted. Setting means (7) serve to set the pivoted position of the tool bit (27) relative to the basic body (2). Means (16) serve to fix the tool bit (27) in the set pivoted position. The tool bit (27) is pivotable about a pivot point (P) which is essentially neutral in terms of unbalance. The tool bit (27) is preferably connected at a rear end (27a) to a radially adjustable slide (7). The slide (7) can be finely adjusted radially, for example with a micrometer screw (9).

Abstract: A micro-adjustable differential screw assembly for providing fine adjustment of the axial and/or radial position of a cutting insert is disclosed. The micro-adjustable differential screw assembly can be mounted directly to a boring bar or to a mounting cartridge, which in turn, can be mounted to the boring bar. An axial micro-adjustable differential screw assembly provides fine adjustment of an axial position of the cutting insert, while a radial micro-adjustable differential screw assembly provides fine adjustment of a radial position of the cutting insert. The differential screw assembly includes a rotatable drive screw with threads of different thread pitches, and a non-rotatable adjusting screw with threads for mating with the drive screw.

Abstract: A deburring tool includes a blade having a cutting head portion, an anchor portion, and a retention spring. An arbor is adapted to removably mount the blade such that the head portion of the blade is adapted to be elevated a predetermined distance from the arbor in an unstressed condition of the blade. The blade is sufficiently resiliently yieldable such that the head portion of the blade can move inwardly relative to the arbor during deburring operations. A holder is adapted to mount the arbor and an adjustment member adapted to operatively engage the anchor portion of the blade. The anchor portion of the blade is adapted to move in response to adjustment of the adjustment member in a direction substantially opposite that of the head portion and flex to elevate the head portion relative to the arbor for deburring operations or recess the head portion relative to the arbor.

Abstract: A tool for working a workpiece has a slot provided between a pair of extremities at its distal end. The extremities have cutting blades mounted thereon. The slot is configured to receive a plate. The tool has a conduit running along its axis for communication of pressurized fluid to the slot and plate. The plate directs flow of the pressurized fluid outward toward the extremities. The resulting outward force causes the extremities to bend outward, thereby urging the cutting blades outward for cutting, reaming, or other working of the workpiece. The resilience of the tool causes the extremities to return back inward when the fluid pressure is reduced. A plate may be configured to receive a wafer for transferring force from the pressurized fluid to the extremities.

Abstract: A backspot facing tool includes a shaft and a cutting element. The shaft has a first and second ends and a recess located near the first end. The shaft also includes an outer circumference and is centered on a first axis. The cutting element has an inner portion and an outer portion and is pivotally coupled to the shaft about a second axis. The cutting element is movable between a closed position and an open position.

Abstract: The invention relates to a deburring tool with a quick change knife, which is formed by at least two parts, namely a guide sleeve having a larger diameter and a center bore, and a base body that can be inserted in the center bore in an axial direction. The base body can be secured in the center bore. A knife groove is arranged on the base body that can receive the knife to be secured, forming a pivot support in the base body. Due to this special support, the knife can be easily exchanged even when the deburring diameters are small, for example, less than 4 mm, while still being able to absorb large deburring forces.

Abstract: An adjustment device for adjusting the position of at least one cutter of a fine machining tool, particularly a reamer, with respect to a cutter support (ST) is described. To allow the cutter to be adjusted as precisely as possible, the cutter support (ST) borders at least one pressure chamber (DK) which is arranged in the adjustment direction of the cutter (S) with a displacement with respect to it and which is filled with a pressure medium which can be placed under pressure using a pressure generation device. Between the cutter (S) and the pressure chamber (DK), a cutter support wall (W) remains which is elastically deformable upon application of pressure by the pressure transfer means to adjust the cutter position.

Abstract: A deburring tool is adapted to be rotatably mounted in a chuck of a drive motor to perform deburring operations. The deburring tool includes an arbor and a blade having a cutting head portion defined at one end thereof and a clip portion defined substantially at the other end of the blade opposite the head portion. The blade is mounted relative to the arbor such that the blade projects a predetermined distance from the arbor in an unstressed condition. The blade is sufficiently resiliently yieldable such that it can move inwardly with respect to the arbor during deburring operations. The clip portion is adapted to flex to provide a spring-like force acting along the blade toward the head portion to facilitate insertion and removal of the blade relative to the deburring tool without use of any tools.

Abstract: A tilt control assembly for controlling the tilt of a cutting tool head has a first eccentric support and a second support, with both of the first and second supports connected to the head along an axis of the head. To adjust the position of the head, the first eccentric support may be rotated.

Abstract: A tool including a working portion with a working member, a side surface and an end surface. The working portion includes a passage passing through the side surface and the end surface. At least one seal is adapted to restrict fluid flow through the side surface and the end surface and at least partially defines a pressure chamber. The working member is adapted-to be selectively pivotally positioned by selectively pressurizing the pressure chamber. The tool similarly enables unique methods of working workpieces.

Abstract: A tool including a working portion with a working member, a side surface and an end surface. The working portion includes a passage passing through the side surface and the end surface. At least one seal is adapted to restrict fluid flow through the side surface and the end surface and at least partially defines a pressure chamber. The working member is adapted to be selectively pivotally positioned by selectively pressurizing the pressure chamber. The tool similarly enables unique methods of working workpieces.

Abstract: A drill for forming undercuts in cylindrical bores formed in stone or concrete and including a drilling member (2;22) having a stem (3;23) provided, at its opposite longitudinal ends, respectively, with a shank (4;24) receivable in a chuck of a hand-held drilling tool and a cutting head (5;25) with abrasive cutting bodies, and a sleeve (7;27) for receiving the drilling member (2;22) and having, at its end adjacent to the shank (4;24), a radial collar (8;28), a drag bearing (11) arranged in side the sleeve for supporting the drilling member (2;22), and at least one opening (15;35, 36, 37) formed in a front, in a direction toward the cutting head (5;25), section of the sleeve and spaced axially from the drag bearing (11) by a distance (a) amounting to from about 0.05×D to about 0.6×D, where D is an outer diameter of the sleeve in the drag bearing region of the sleeve.

Abstract: A tool assembly affording a wider range of adjustment of machining diameter, comprises a boring bar and a tool cartridge supporting a cutting tip and attached to the boring bar. The tool cartridge chassis is pivotably attached via a pin within a recess formed in boring bar; an adjustment screw is provided to a first side of the pivot axis, the screw being threaded into the cartridge chassis and situated in abutment with a surface of the bar. A compression spring is provided to a second side of the pivot axis, interposed between the boring bar and the cartridge chassis. Appreciable pivotal motion can be imparted to the cartridge chassis by loosening or tightening the adjustment screw. Adjustments can be made automatically by providing a draw-bar.

Abstract: A tool having a base body is proposed, on which at least one cutter holder, preferably a rocker-type cutter holder, is mounted such that it can be adjusted transversely with respect to the axis of the tool. The cutter holder carries a cutter and rests via a pressure piece on a control chamfer, which is provided on a control sleeve which is mounted in the base body such that it can be displaced axially in relation to the pressure force. The tool is defined in that the movement of the cutter holder (35) is controlled by at least one centrifugal force-actuated element (44, 66).

Abstract: A tool assembly affording a wider range of adjustment of machining diameter, comprises a boring bar and a tool cartridge supporting a cutting tip and attached to the boring bar. The tool cartridge chassis is pivotably attached via a pin within a recess formed in boring bar; an adjustment screw is provided to a first side of the pivot axis, the screw being threaded into the cartridge chassis and situated in abutment with a surface of the bar. A compression spring is provided to a second side of the pivot axis, interposed between the boring bar and the cartridge chassis. Appreciable pivotal motion can be imparted to the cartridge chassis by loosening or tightening the adjustment screw. Adjustments can be made automatically by providing a draw-bar.

Abstract: A tool holder, which has a tool bit pivotal in a recess in one end thereof, extends coaxially through a generally bell shaped piston housing, and through the center of a piston slidably mounted on the holder for limited reciprocation in the housing axially thereof. The piston is urged by a compressing spring to a retracted position against one end of the housing, and has a reduced diameter annular wall that projects coaxially toward the end of the holder containing the tool bit. A tool actuating rod, which is pivotal in an axial bore in the holder, has on one end a lever which extends slidably into an axially extending helical slot formed in the annular piston wall, and is connected at its opposite end to the tool bit. When the piston is in its retracted position, the helical slot in its annular wall causes the actuating rod to swing the tool bit to an inoperative position within the holder recess.

Abstract: A boring tool, including a housing part (3), a fisture (35) for transmitting a rotational movement to a borer, the transmitting fixture (35) being supported in the housing part and having a central receiving region (36) for receiving the borer (4), two, spaced from each other, bearing members (33, 34) for supporting the transmitting element (35) in the housing part (3), and an arrangement for enabling inclination of a longitudinal axis of the borer (4) relative to the housing part (3).

Abstract: A tool head for the precision cutting of a surface of a rotating workpiece has a cutting tool which is movable in opposition to the force of a restoring spring from an initial position into an operating position with respect to the workpiece via an actuating drive. The actuating drive is formed by a translatorily movable driving element and a transfer element which converts the driving movement into an adjusting movement. The driving element used for adjusting the cutting tool from the initial position to a machining position is formed by an expansion bar actuated by magnetostrictive principles.

Abstract: A cylindrical tool body is chucked at one end in a drive spindle, and has in its opposite end a cutter blade pivotal into and out of a recess in the tool body between inoperative and operative positions, respectively. The pivoted end the cutter has thereon spaced teeth drivingly engaged with the teeth of a rack formed on one end of an elongate operating rod which reciprocates in an axial bore in the tool body. The opposite end of the rod is secured to one end of a radial pin, the opposite end of which projects slidably into a helical groove formed in the inner peripheral surface of an actuating ring which surrounds the tool body adjacent its chucked end. A friction ring which is rotatable on the tool body adjacent the actuating ring is frictionally engaged with the actuating ring by a friction clutch device which also surrounds the tool body adjacent the friction ring.

Abstract: A cylindrical tool holder has at one end a shank section disposed to be chucked in the drive spindle of a drill press or the like, and has in its opposite end a recess in which a tool bit pivots between an operative position in which it projects radially outwardly from the recess, and in inoperative position within the recess. The bit is connected to one end of an operating rod which is pivotal in a slot in the holder, so that when the rod is swung to one limit position the tool bit is swung to its operative position, and vice versa. An actuating disc which is mounted on the holder for limited rotation relative thereto, is frictionally coupled adjacent its outer periphery with a flywheel which is rotatably mounted on the tool holder, whereby rotation may be transmitted by the holder through the flywheel and friction coupling to the actuating disc. The actuating disc has thereon two spaced pins.

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: An expansible drill is provided for drilling and undercutting holes. The drill comprises a rotatable tubular drill body having a drill head at one end for cutting a bore. At least one undercutting arm is located within a slot in the drill body and attached by a hinge such that at least a part of the arm is pivotal radially outwards. A guide is provided for moving the arm radially outwards, the guide comprising a shaft which is located within the drill body and constrained to rotate therewith. A locking mechanism selectively prevents or allows the shaft to move axially relative to the drill body as force is applied to an end of the shaft.

Abstract: A deburring tool which has a holder from which an elongated sleeve extends. A blade is arranged in the sleeve close to the free end thereof which can be moved inside or outside the sleeve with a movable pin. The blade extends outside the sleeve through a close fitting opening made in the wall of the sleeve in such a way that its cutting side abuts a limiting edge of the opening in the sleeve thereby closing the opening.

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: Drilling apparatus (50) for producing drilled holes with undercuts, with a drill (15), the drill shank (19) of which has a side cutting edge (14) protruding radially beyond the periphery (18) of the drill shank, and, on its circumference, opposite the side cutting edge (14), has a flattening, which makes possible the insertion of the side cutting edge (14) into the drilled hole, and the drill shank (19) of which is firmly connected with a connecting coupling (20), which is disposed in an articulated fashion between the drill (15) and a drill driving mechanism, permits wobbling motions of the shank as the drill (15) is rotating and has a drill shank-side coupling (29) with an axially movable indentor (85), which can be supported on an inclined plane (17) of a coupling (29) connected with the drill shank (19), which inclined plane (17) brings about the radial advance of the side cutting edge (14).

Abstract: A boring tool is equipped with a radially adjustable clutter element, and a remotely-operated mechanism for adjusting the cutter element between its active and inactive positions. During movement of the tool into a hole in a work piece the adjustable cutter element is inactive; the cutting operation is performed by one or more non-adjustable cutter elements. When the tool holder reaches the limit of its penetration into the work piece the remote adjusting mechanism is operated to move the adjustable cutter element radially outwardly to an active cutting position. During return movement of the holder out of the work piece the adjustable cutter element performs a finish machining operation on the hole surface.

Abstract: A boring bar in which a cutter element holder is adjustable around a transverse pivot axis, so that different cutting elements can be used to machine the hole surface during movement of the boring bar in opposite directions. The transverse pivot axis is defined by a torsional hinge that automatically returns the holder to a neutral position when the adjustment force is removed.

Abstract: A cutting chisel holder which is controlled by pressure and constructed as a rotary drill head which can be precisely adjusted by hydraulic means has a cutting chisel, which can be clamped in, with a base and a driven member which is movable relative to the base, and has a pressure chamber arranged between the base and driven member, as well as a pressure medium feed. The driven member moves parallel to itself under the influence of the pressure medium and, in doing so, causes a movement of the cutting chisel on a curved path extending approximately vertically to the axis of rotation of the drill head by parts acting mechanically without friction.

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: An adjustable cartridge to be mounted in the end of a boring bar, the cartridge including an anvil rotatably affixed to said boring bar, said anvil including a pocket into which a indexable insert is affixed. The anvil is secured in an axially oriented slot which includes an arcuate seating face which includes a key and key way slot. Rotation of the anvil within the slot effects radial adjustment of the insert a key pin serves to pivotally secure the cartridge within the pocket. In addition, the level or back taper of the insert can be adjusted.

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: Rotating drill head with a boring bar which is swivel able by small amounts transversely to the rotational axis by fluidic means, with a base, a driven member located opposite the base, a pressure chamber arranged between the base and driven member and having a fluid inlet, and with an expanding lever gearing in a working connection with the driven member and serving for the synchronous and oppositely directed swiveling of a tool carrier and a compensating member which are constructed so as to be geometrically similar and constitute the boring bar.

Abstract: A tool is described for boring spherically curved inner surfaces consisting of a main body which rotates about its longitudinal axis during the boring operation. A swivel housing is mounted on an axle bolt in the main body and can thus be swiveled about an axis at right angles to the longitudinal axis. The swivel motion is produced with the aid of a linkage arrangement provided in the tool. A cutting tool holder is guided for longitudinal displacement in the swivel housing at right angles to the axle bolt. The cutting tool holder is supported lateral wedge surfaces on a mating wedge surface of the axle bolt and extends with a shank part through the axle bolt. With the aid of a compression spring and an adjusting screw, the axle bolt can be displaced in the longitudinal direction relative to the cutting tool holder to adjust the radial spacing of the cutter from the axle bolt by the mating wedge surface.

Abstract: A tool mechanism for machining a hole side surface, and for chamfering the ends of the hole, includes a boring cutter and two chamfer cutters oriented so that during an axial infeed of the cutter assembly the hole side surface is machined and a chamfer is formed at one end of the hole. The cutter assembly can be shifted transversely to position a chamfer cutter for machining a second chamfer on the other end of the hole. The cutter assembly is carried on a cutter support member that is swingably mounted on a tool body secured to the spindle of the cutting machine. An actuator device is movable along the tool body axis to adjust the position of the cutter support member.

Abstract: An adjustable cartridge to be mounted in a boring bar, the cartridge including an anvil rotatably affixed to said boring bar, said anvil including a pocket into which a lay-down indexable insert is affixed. The anvil is secured in an axially oriented slot which includes an arcuate seating face. Rotation of the anvil within the slot effects radial adjustment of the insert.

Abstract: A machining tool to be mounted upon a cutter body, the machining tool including a cartridge for mounting upon the cutter body and an anvil rotatably affixed to the cartridge, the anvil including a pocket into which is affixed a cutting insert for rotation with the anvil.

Abstract: A device for forming an undercut in a drilled hole comprises a stem having a pivotal reaming element at a lower end thereof, and a guide tube in which the stem is longitudinally displaceable with the reaming element pivoting radially outwards from the guide tube in a lower end position of the stem.

Abstract: An undercutting drill for obtaining a drill hole with a conical undercut. A drill shaft is provided connected in an articulated manner through a housing and containing a universal joint to a clamping shank. The face of the housing facing the joint. The drill shaft is provided with a plate having a stopping face, the vertical centerline of which is tilted in relation to the longitudinal axis of the drill shaft.