Abstract: A wear member includes a body defining an exterior with an outside perimeter, an interior aperture with an at least partially interior polygonal perimeter, and at least one fastener receiving hole extending from the exterior to the interior aperture. The exterior lacks any large openings to limit the risk of material packing.

Abstract: A method for cutting a groove of a predetermined groove width in a work piece, including the steps of providing a metallic work piece having a peripheral surface; providing a grooving tool including a blade portion having a constant or substantially constant blade width, and an insert having a maximum insert width defined by a main cutting edge; selecting the insert width to be greater than the blade width; connecting the grooving tool to a machine interface of a machine tool; rotating the work piece about a rotational axis thereof in a rotational direction; and cutting a groove in the work piece by moving the tool in a feed direction towards the rotational axis of the work piece, such that the groove width is equal to or substantially equal to the insert width and such that a tangential cutting force is directed towards or substantially towards the machine interface.

Abstract: A machining tool forms a first relief surface, a valve seat surface, and a second relief surface by cutting the inner periphery of a valve seat blank having an opening. The machining tool is provided with: a tool body rotationally driven about an axis; a plurality of cutting tools rotating with the tool body; a cartridge mounted to the tool body so as to be capable of moving forward and backward along the axis; and a cam in contact with the base end surface of the cartridge and moving the cartridge forward and backward. At least one of the plurality of cutting tools is mounted to the cartridge.

Abstract: An indexable parting blade has opposite blade first and second sides, a blade peripheral edge, a central index axis, and at least first, second and third insert pockets located along the blade peripheral edge. The parting blade also has first, second and third coolant channels, each forming a coolant path from a corresponding inlet to a corresponding one of the insert pockets. Each coolant channel includes a rake outlet opening out to a rake side of its corresponding insert pocket and a relief outlet opening out to a relief side of that same insert pocket. The inlet corresponding to a given coolant channel is located further from that coolant channel's insert pocket than at least one of (a) the inlet corresponding to a different coolant channel, and (b) the central index axis.

Abstract: An adjustment structure for an electric eddy current sensor is provided in the present invention, which includes an electric eddy current fixing base, an electric eddy current base plate, a spring buffer mechanism, a rotation adjustment mechanism and an electric eddy current mechanism. The rotation adjustment mechanism is disposed on the electric eddy current fixing base, the electric eddy current mechanism is disposed on the rotation adjustment mechanism, the electric eddy current base plate is disposed on a bottom of the electric eddy current fixing base, and the spring buffer mechanism is disposed on a bottom of the electric eddy current base plate. With provision of the rotation adjustment structure, the control system on the inspection robot drives the adjustment motor to start working, thereby driving the reducer to start working. The output torque of the active adjustment shaft is increased through the action of the reducer.

Abstract: A device for holding tools for machine tools, includes at least one interchangeable holder and one base holder. Each interchangeable holder includes two interchangeable-holder guiding elements which are engaged with base-holder guiding elements of the base holder. Furthermore, each interchangeable holder comprises an interchangeable-holder coolant channel comprising an interchangeable-holder coolant-channel opening in one of the interchangeable-holder guiding elements, which comes into contact with a base-holder coolant-channel opening of a base-holder coolant channel, which is arranged on a base-holder guiding element. First guiding elements—either the interchangeable-holder guiding elements or the base-holder guiding elements—have a convex semicircular cross-section. The cross-section has a flat area containing the vertex of the semicircle, or it has two widened areas which are arranged in mirror symmetry on the semicircle.

Abstract: A device for selectively moving a first or second tool relative to a workpiece on a lathe, the device including a first and a second tool providing system, each of the tool providing systems including a guide rail having a length direction, a slide slidably mounted on the guide rail, the slide being shiftable from a waiting position to a work position, a tool retainer on the slide, a block fixed relative to the guide rail, a first lever pivotably mounted to the block, a second lever having a first end pivotably mounted to the block and a second end pivotably mounted to the slide, and a linear actuator having a rod pivotably connected to the first lever, the rod extending in a direction not parallel to the length direction of the guide rail and being shiftable from a first position to a second position.

Abstract: The present disclosure relates to a monitoring module and an escalator/autowalk including the monitoring module. A monitoring device comprises: a first component disposed on one of the driving device of the escalator or autowalk and a fixed device; and a recess portion disposed on the other of the driving device of the escalator or autowalk and the fixed device and configured to receive at least a part of the first component; wherein a relative movement between the recess portion and the first component triggers the first component so as to indicate a movement of the driving device. By applying the monitoring device of the present disclosure, it is possible to achieve monitoring the movement of the driving device of the escalator or autowalk in multiple directions.

Abstract: Pipe machining apparatuses are provided. In one aspect, a pipe machining apparatus includes a tool support adapted to both part or completely cut a pipe into multiple portions, and machine a groove in an exterior surface of the pipe. In another aspect, the apparatus has a low radial clearance such that the tool support does not project a significant distance beyond a pipe. In a further aspect, a method of parting and machining a groove in a pipe with a single pipe machining apparatus is provided.

Abstract: The invention relates to an alignment device for precisely positioning a first functional element (103), particularly a retainer, on a second functional element (105), particularly a disc, these being detachably secured to each other.

Abstract: A cutting tool includes first and second components, configured for differential coupling with each other. The first and second components each include peripheral and central coupling threads which each extend in a helical direction about a component axis of the respective component. Each component's peripheral and central coupling threads are axially offset with respect to each other. The first and second components each include a radial stop surface located at the respective peripheral coupling thread. In an assembled position of the cutting tool, the radial stop surfaces abut each other and the peripheral and central coupling threads of the first component threadingly engage the peripheral and central coupling threads of the second component, respectively, forming a differential tool coupling between the first and second components.

Abstract: In an ultrasound-assisted method, in each of at least two sonotrode arms (8, 9) of a sonotrode (7) that is fixed in a protruding manner, said sonotrode arms being connected to each other by means of a respective joint (10) in each case, a respective ultrasonic wave that is transverse to the protrusion direction and that oscillates in a resonance mode is produced, wherein ultrasonic waves superposed in the at least one joint (10) and oscillating in the sonotrode arms (8, 9) of the joint (10) oscillate at a phase offset from each other, and the oscillation planes of the superposed ultrasonic waves are parallel to each other.

Abstract: An outer member and an inner member constituting a wheel bearing device are assembled and the brake rotor is fixed to the hub ring of the inner member. In this state, the pad slide surfaces of the brake rotor are lathed with the reference provided by a wheel pilot end surface. Alternatively, the wheel pilot end surface of the hub ring by chucking the knuckle pilot of the outer member with the wheel bearing device put in its assembled state, and the pad slide surfaces of the brake rotor are lathed with the reference provided by the wheel pilot end surface.

Abstract: A carriage is moved in a direction including a Y axis component in order to move a turning process tool that is attached to a tool spindle along a horizontal line that is perpendicular to a Z axis, and thus, a turning process is carried out on a workpiece which is attached to a workpiece spindle.

Abstract: A modular cutting tool holder portion for a metal-working machine includes a first engagement face configured for clamping engagement with a corresponding second engagement face of a complementary modular cutting tool holder portion. The first engagement face includes a base surface and interlocking elements in the form of exactly four projecting protrusions or exactly four recesses. Each interlocking element includes a non-contact surface spaced from the base surface. The non-contact surface includes two opposing edges between which it extends, and two abutment surfaces each extending from a respective one of the two opposing edges to the base surface and being configured for the clamping engagement.

Abstract: A cutting insert has a longitudinal insert axis A, a cutting head and an insert shank which extends rearwardly from the cutting head. The insert shank includes an insert clamping portion with an asymmetric cross section taken perpendicular to the insert axis A. The insert shank has a peripheral surface extending along at least a portion of the total length of the insert shank. The cutting insert has a first dividing plane P1 which contains the insert axis A. The first dividing plane P1 may be parallel to a line L which extends along the longest cross-sectional dimension of the insert clamping portion 40. On one side of the first dividing plane P1, the peripheral surface comprises first and second longitudinally extending depressions. On the other side of the first dividing plane P1, the peripheral surface comprises first and second abutment surfaces separated by a third depression, the first and second depressions being separated by a third abutment surface.

Abstract: A high precision micro/nanoscale machining system. A multi-axis movement machine provides relative movement along multiple axes between a workpiece and a tool holder. A cutting tool is disposed on a flexible cantilever held by the tool holder, the tool holder being movable to provide at least two of the axes to set the angle and distance of the cutting tool relative to the workpiece. A feedback control system uses measurement of deflection of the cantilever during cutting to maintain a desired cantilever deflection and hence a desired load on the cutting tool.

Abstract: A tool-main-spindle, whose cutting angle can be changed, is translated by an X-axis moving mechanism portion on an X-axis provided in a plane perpendicular to an axis of a work, and is translated on a Y-axis by a Y-axis moving mechanism portion. Cutting of the work is performed by setting the cutting angle of the tool-main-spindle to an angle of the cutting tool at which the work has large dynamic rigidity, and causing an axis of a cutting tool to cross the work axis, and cutting the work with the cutting tool toward the axis of the work by cooperatively operating the X-axis moving mechanism portion and the Y-axis moving mechanism portion.

Abstract: A hands-free quick-change air tool configuration for a machining apparatus includes a tool holder configured to receive a normally hand-held air operated tool. The air manifold is operably receptive of the tool holder. A plunger-type seal configuration is operably interconnected to an air supply and is in operable communication with the air manifold. A method for deburring a part in a machining apparatus is included.

Abstract: A lathe tool rest including a light source for improving the illumination of the workpiece is described. The tool rest includes a vertical post having an upper end, a horizontal tool arm attached to the upper end of the post, and an LED illumination strip attached to the front side of the tool arm. The front side of the tool arm preferably includes a horizontal recess With the LED illumination strip being mounted within the recess.

Abstract: A multiple tool station block for a machine having a Y-axis, such as a CNC machine, is provided.

Abstract: A tool post assembly includes a tool post body adapted to be mounted on a machine tool, a carrier block coupled to and movable relative to the tool post body by means of a tenon-and-mortise structure, and a lever pivotally mounted on the tool post body and having a manually operable power end and a weight end which is coupled to the carrier block such that, when the power end is actuated, the carrier block is moved from a normal position to a lifted position so as to quickly displace a tool held thereby away from a workpiece.

Abstract: A toolholder assembly for releasably holding a toolholder includes a toolholder having a tubular shank with at least two perforations; a tool support member; a canister disposed within the tool support member and including at least two apertures; a lock rod movable within the tool support member in a reciprocating motion for pulling the toolholder into a locked position and for releasing the toolholder to an unlocked position; and at least two locking elements disposed within the spaced apertures of the canister and engaging the lock rod so that movement of the lock rod causes the locking elements to extend radially outward from the canister. The circumferentially spaced perforations of the tubular shank each include a primary cylindrical wall and a forward facing contact surface at least partially defined by a depression having a converging wall surface non-concentric with the primary cylindrical wall of the perforations.

Abstract: A micro-scale apparatus for supporting a tool for hard turning comprises a base, a pivot coupled to the base, an actuator coupled to the base, and at least one member coupled to the actuator at one end and rotatably coupled to the pivot at another end. A tool mount is disposed on the at least one member. The at least one member defines a first lever arm between the pivot and the tool mount, and a second lever arm between the pivot and the actuator. The first lever arm has a length that is less than a length of the second lever arm. The actuator moves the tool mount along an arc.

Abstract: An apparatus for releasably holding a tubular toolholder shank includes a tool support member; a canister disposed within the tool support member; a lock rod movable within the tool support member in a reciprocating motion for pulling the tubular toolholder shank into a locked position and for releasing the tubular toolholder shank to an unlocked position; and at least two locking elements engaging the lock rod so that movement of the lock rod causes the locking elements to extend outward to engage the tubular toolholder shank. The lock rod includes a relief cavity extending rearward from a forward end of the lock rod. The lock rod has a maximum outer diameter and the relief cavity has a maximum diameter. A ratio of the maximum diameter of the relief cavity to the maximum outer diameter of the front portion of the lock rod is greater than approximately 1 to 4.

Abstract: Processes for high speed machining of workpiece materials using high performance tools with prolonged tool life and improved surface finish are provided by vibrating the tool and/or the workpiece at a frequency greater than the frequency of shear localization in the primary shear zone or chip segmentation occurring in the absence of tool vibration, with an amplitude sufficient to break up the tool-chip atomic contact, thereby decreasing the tool-chip contact length through decreasing the tool-chip contact time, thereby suppressing accelerated chemical tool wear caused by dissolution of the tool into the workpiece by nanocrystalline grain boundary diffusion and grain boundary sliding mechanisms by preventing shear localization associated with nanocrystalline grain formation in the primary shear zone of the chip, and suppressing oxidation wear of the tool by preventing segmentation of the chip.

Abstract: A cutting tool assembly for boring and internal grooving operations includes a tool head having a removably secured cutting insert at a forward insert receiving end and a rear mating end with a male or female type tool holder coupler in the form of an engagement protrusion or cutting holder receiving pocket. The tool head is fixed to a tool holder with a front mating end having a female or male tool head coupler in the form of a tool head receiving pocket or engagement protrusion. Following assembly, at least three abutting wall surfaces and an adjacent support surface of the tool holder coupler are in contact with at least three non-coplanar abutment surfaces and an adjacent supporting surface of the tool head coupler, respectively, and a fastening screw member extends through a through bore in the tool holder coupler engaging a threaded screw bore in the tool head coupler.

Abstract: An apparatus for the production of caps comprises a first operating turntable device associated with a first operating arrangement and a further operating turntable device associated with a further operating arrangement, between said first operating turntable device and said further operating turntable device a transferring turntable device being interposed such as to transfer said caps between said first operating turntable device and said further operating to turntable device; a device for positioning a tool in relation to an object to be processed comprises a toolholder element suitable for bearing said tool, an adjustable member operationally associatable with said toolholder element and an abutting member suitable for pressing said toolholder element against said adjustable member.

Abstract: Methods, systems, and techniques for automatically determining jet orientation parameters to correct for potential deviations in three dimensional part cutting are provided. Example embodiments provide an Adaptive Vector Control System (AVCS), which automatically determines speeds and orientation parameters of a cutting jet to attempt to insure that a part will be cut within prescribed tolerances where possible. In one embodiment, the AVCS determines the tilt and swivel of a cutting head by mathematical predictive models that examine the cutting front for each of “m” hypothetical layers in a desired part, to better predict whether the part will be within tolerances, and to determine what corrective angles are needed to correct for deviations due to drag, radial deflection, and/or taper.

Abstract: A cutting tool includes a blade, a seat, a shank and a damper. The blade is connected to the seat. The seat is connected to the shank. The shank includes a pocket defined therein and a thread formed on the wall of the pocket. A damper is inserted in the pocket. The damper includes a thread formed on the periphery for engagement with the thread of the shank, with a small gap defined between the threads.

Abstract: A quick change tool holder having a base member, a body, a quick change head member, and a cutting tool cartridge. The base member includes an upper surface, bottom surface, and mating surface and is adapted to removably mount to an associated cutting machine carriage. The body includes an end wall and an inner surface, where the end wall includes a dovetail portion. The body is adapted to engage the base member in an interlocking fashion. The quick change head includes a top surface, a bottom surface, an interface wall having a channel disposed therein, and an outer wall having a plurality of longitudinal grooves, wherein said channel is adapted to receive said dovetail portion. The cutting tool cartridge is adapted to engage the longitudinal grooves of the quick change head.

Abstract: A support element is attachable to a tool receivable in a tool holder bore so as to strengthen a connection between the tool and a tool holder and provide increased rigidity and vibration damping. The support element has a first support element end adapted for disposition adjacent to a forwardly facing mounting surface of the tool holder and a second support element end adapted for disposition adjacent to a forward end of the tool. The support element is mountable on the tool so as to be disposed completely between the forwardly facing mounting surface and the forward end of the tool. In one configuration, the support element includes a base having an underside configured for abutment with the tool holder and an extension protruding in a longitudinal direction from the base. The base is adapted to receive at least one element operable to produce adjustable canting of the base with respect to the tool holder and corresponding adjustable frictional engagement between the support element and the tool.

Abstract: An adaptive device for use as a tool holder for manual and computer numerical controlled lathes is provided to retain and use tools of various sizes, including those intended for use on CNC lathes and on mills. The device includes a sleeve, which includes an inner-tapered surface, a neck and an opening, and a threaded member sized to fit through the neck in the opening. The adaptive device may further include one or more shoulders and/or grooves on the exterior of the sleeve, and/or a retaining member fitted to the threaded section, and may include an embodiment where the sleeve is integrated into a tool holder and/or where the threaded member is constructed to permit fluid flow into the tool holder.

Abstract: A clamping device used for securing a toolholder for metal working operations includes a lock rod reciprocating along a lock rod longitudinal axis to radially activate locking balls to engage perforations within the shank of a toolholder, wherein the toolholder is oriented along a toolholder axis non parallel to the locking rod longitudinal axis. Additionally, the lock rod includes a ramp which engages a bump-off pin in a direction lateral to the motion of the lock rod to provide a mechanism for ejecting the toolholder from the clamping device.

Abstract: The invention discloses a centre drilling/turning tool holder including a stock receiver, a pillar holder, and a tail section. The stock receiver is used to position a workpiece. The pillar holder is able to move and spin, and has a plurality of positioning means for positioning a tool. The tail section is able to move and has a top pin for urging the workpiece. The pillar holder positions at least one tool holder. One side of the tool holder positions one tool. The configuration of the tool holder allows the pillar holder to avoid from contacting the tail section so that operation time is saved and centre-point correction becomes more efficient.

Abstract: This is a tool device called a Special Articulating Tool Holder for a Lathe. The device provides a new and unique device to permit deep hollowing of wood or other materials with a controlled, repeatable method. The preferred embodiment of the device is comprised of multiple (two or more) articulating joints—the first of the multiple articulating joints is secured to a tool holder with features to hold cutting tools—and the last of the multiple articulating joints is secured to an essentially vertical mounting post. The mounting post is held in place by a base means which mounts either horizontally or vertically to the machine base as determined by the machine configuration.

Abstract: A tool structure contains a first part having an oval end section with regard to an axis of symmetry in a direction of a maximum height and an axis of symmetry in the direction of a maximum width, and a second part having a recess accommodating the end section via mutual contact surfaces. The tool structure has a clamping element for the mutual clamping of the parts and mutual contact surfaces that are restricted to in each case four spaced-apart surface sections. These surface sections are disposed symmetrically with respect to a circumference of the end section such that a center point of a straight connecting line of the starting and end points of the respective surface section is at a normal distance b1 from the axis of symmetry and at a normal distance h1 from the axis of symmetry, h1 being greater than b1.

Abstract: A micro-scale apparatus for supporting a tool for hard turning comprises a base, a pivot coupled to the base, an actuator coupled to the base, and at least one member coupled to the actuator at one end and rotatably coupled to the pivot at another end. A tool mount is disposed on the at least one member. The at least one member defines a first lever arm between the pivot and the tool mount, and a second lever arm between the pivot and the actuator. The first lever arm has a length that is less than a length of the second lever arm. The actuator moves the tool mount along an arc.

Abstract: A tool clamping device having a tool holder (2) holding a tool (7, 8) for insertion into a socket of a tool support (1), such as a turret disc is designed such that a receiving body (16) of the tool holder and the tool support (1) have bearing surfaces (16, 3) to be arranged to one another and devices (14, 15) for fastening the tool holder on the tool support. The receiving body or the tool support has at least one stopping means (28), which projects axially over its bearing surface and is disposed on one side of the receiving body or tool support. The tool support or the receiving body has at least one contact surface for the stopping means. There is provided elastic means (36, 44) by means of which the stopping means can be laterally held in place on the contact surface under prestress.

Abstract: A tool holder (1) has a shaft (2) intended to be arranged in a tool holder in a manufacturing machine, a head (3) on which a cutter is intended to be arranged and a viscoelastic materials (4) arranged so that the cutter is in contact with the manufacturing machine solely via the viscoelastic material (4), in which at least those parts on the surface (5) of the shaft (2) that are intended to be in contact with the manufacturing machine are provided with the viscoelastic material (4). The viscoelastic material (4) is attached on a bearer material that is attached to the surface (5) of the shaft (2).

Abstract: In cutting the braking surface of a brake rotor-equipped wheel bearing device, which includes an outer member having a car body attaching flange in the outer periphery, an inner member having a wheel attaching flange in the outer periphery, a plurality of rows of rolling bodies incorporated between the two members and rotatably supporting the inner member, and a brake rotor attached to the wheel attaching flange, the cutting is performed such that subsequently to assembling the wheel bearing device in its mounted state, the end surface of a wheel pilot formed in the inner member is finish-cut. The brake rotor is then attached to the wheel attaching flange, whereupon the braking surface of the brake rotor is cut with the outer diameter of the wheel pilot gripped relative to the end surface of the wheel pilot.

Abstract: A tool revolver, in particular for a machine tool, includes a tool disk (1) rotatable about a revolver axis and provided with a plurality of tool stations distributed along the disk circumference and movable to an operation position by the disk (1) rotation. At least one part of the tool stations (13) has a reception area (25) for receiving a tool holder (3). A fixing device is used for fixing a corresponding tool holder (3) at a defined position in the reception area (25). The interaction between an elastic adjusting body (31) protruding perpendicularly to the reception area (25) and used in the form of an orientation element for positioning and adjusting surfaces (41, 43) deepened into a base surface (7) of the tool holder (3) enables the tool holder to take an adjustment position when a screw fitting is fastened.

Abstract: Disclosed is an apparatus and related methods for facilitating the application of a cutting tool to a work-piece rotating on the axis of a lathe.

Abstract: A machine tool a slide attached on a base and moveable along an X-axis, a carriage attached onto the slide and moveable along a Y-axis, a follower rotatably mounted on the carriage, a sliding member attached on the follower and moveable along a Z-axis, a carrier rotatably attached to the sliding member, and a tool holder mounted on the carrier and rotatable relative to the carrier to selected angular positions for supporting a shaft, and a barrel slidably received in the shaft for supporting a tool member. The barrel includes a noncircular chamber for engaging with a noncircular shank of the tool member and for preventing the shank of the tool member from rotating relative to the barrel and the shaft.

Abstract: An apparatus for the production of caps comprises a first operating turntable device associated with a first operating arrangement and a further operating turntable device associated with a further operating arrangement, between said first operating turntable device and said further operating turntable device a transferring turntable device being interposed such as to transfer said caps between said first operating turntable device and said further operating turntable device; a device for positioning a tool in relation to an object to be processed comprises a toolholder element suitable for bearing said tool, an adjustable member operationally associatable with said toolholder element and an abutting member suitable for pressing said toolholder element against said adjustable member.

Abstract: A machine tool includes a bed, a main spindle, a first tool rest, a first tool, a first driving mechanism, a second tool rest, a second tool, a second driving mechanism and a control device. The main spindle is located over the bed. The first tool is mounted on the first tool rest. The second tool is mounted on the second tool rest. The control device controls the first driving mechanism and the second driving mechanism to drive the first tool rest and the second tool rest, respectively, such that the first tool and the second tool move along the same direction, and machine a processing surface of a workpiece in order.

Abstract: In a machine tool (1) including a supporting device (2) and a tool rest (4), a workpiece (W) is supported rotatably around a first axis (C) by the supporting device (2), and a rotary tool or a boring tool (6) for boring operations to machine an internal surface of the workpiece (W) is coupled, rotatably around a second axis (L1), to a rotary shaft of the tool rest (4). The tool rest (4) is allowed to be turned around an axis (B) perpendicular to the first axis (C), and the boring tool (6) includes a tool holder (7) adapted to be coupled to the rotary shaft and a bit (6a) which is angled with respect to an axis (L2) of the tool holder (7), whereby a boring operation is performed with the tool rest (4) positioned at a predetermined oblique angle with respect to the first axis (C).

Abstract: A configurable tooling block for a CNC turret lathe holds a plurality of tools at a single index position of the turret. The tooling block includes a main body, a mounting flange, and a coolant manifold removably mounted on the main body on either a first side face or a second side face of the main body. The main body has a plurality of tool-receiving openings, at least one of which is a rectangular opening for receiving an OD tool. The manifold may be provided with individually operable valves for controlling coolant flow to output ports associated with the tool-receiving opening, and may be made of a material that is lighter than the material used to form the main body to reduce overall weight.

Abstract: A machine tool a slide attached on a base and moveable along an X-axis, a carriage attached onto the slide and moveable along a Y-axis, a follower rotatably mounted on the carriage, a sliding member attached on the follower and moveable along a Z-axis, a carrier rotatably attached to the sliding member, and a tool holder mounted on the carrier and rotatable relative to the carrier to selected angular positions for supporting a shaft, and a barrel slidably received in the shaft for supporting a tool member. The barrel includes a noncircular chamber for engaging with a noncircular shank of the tool member and for preventing the shank of the tool member from rotating relative to the barrel and the shaft.

Abstract: The tool holder for machine tools with fixed tools has a cylindrical shank for connection to the carriage or turret of the machine tool and a receiving bore for a tool. It comprises a base holder having the cylindrical shank and a collet chuck holder separate from the base holder and connectable to it with an exact fit and having a receiving bore for a collet chuck.