Abstract: A tool assembly in which a tool is releasably mounted on a tool holder. The tool is supported by the tool holder at two spaced apart regions which are formed independently therefore alignment between the axes of the tool and tool holder does not rely on tight manufacturing tolerances.

Abstract: An exemplary machine tool includes a base and a drill for machining a specimen mounted on the base. The drill includes a main rotator and a bit holder mounted to the main rotator. The bit holder has a first rotator and a second rotator rotatably mounted to the bit holder. A rotate speed of the first rotator is different from that of the second rotator. The machine tool has high precision and efficiency.

Abstract: An exemplary machine tool includes a base and a drill for machining a specimen mounted on the base. The drill includes a main rotator and a bit holder mounted to the main rotator. The bit holder has a first rotator and a second rotator rotatably mounted to the bit holder. A first bit is mounted on the first rotator. A second bit is mounted on the second rotator. The machine tool has high precision and efficiency.

Abstract: A base framework for a manipulating apparatus which can be constructed in a modular manner, in particular for an automation cell which is designed for being combined with at least one machine tool, comprising a front wall, a rear wall and side walls which enclose a control space for a control device, a process platform being set up above the control space, the front wall having at least one mechanical interface for fixing a supply module which serves to supply workpieces, and the rear wall having a top rear-wall part which projects beyond the process platform and, on its front side pointing towards the process platform, has a first plurality of mechanical interfaces for the locally variable fixing of a process module for manipulating and/or processing supplied workpieces, the top rear-wall part also having an opening which is arranged above the process platform.

Abstract: Tool and method for machining a workpiece, such as a milling tool for machining a workpiece, and the method thereof. The abstract of the disclosure is submitted herewith as required by 37 C.F.R. §1.72(b). As stated in 37 C.F.R. §1.72(b): A brief abstract of the technical disclosure in the specification must commence on a separate sheet, preferably following the claims, under the heading “Abstract of the Disclosure.” The purpose of the abstract is to enable the Patent and Trademark Office and the public generally to determine quickly from a cursory inspection the nature and gist of the technical disclosure. The abstract shall not be used for interpreting the scope of the claims. Therefore, any statements made relating to the abstract are not intended to limit the claims in any manner and should not be interpreted as limiting the claims in any manner.

Abstract: An apparatus and method for machining a workpiece in a single-pass comprising a tool configured to produce a borehole when rotated and translated relative to the workpiece, a toolholder configured to fixedly secure and rotate the tool, and a bushing retractably coupled to the toolholder, so as to be shiftable between extended and fully retracted positions, and preferably biased towards the extended position, wherein said tool, toolholder, and bushing are cooperatively configured such that the bushing provides lateral support for the tool during the machining process.

Abstract: A valve seat and valve guide machining tool for the precision machining of valve seats and valve guides in a cylinder head of an internal combustion engine is disclosed, comprising at least two tool parts (3,5) of which a first comprises at least one geometrically defined cutter (11), provided for the valve seat machining and a second comprises at least one geometrically-defined cutter (15), provided for valve guide machining, which are connected to each other by means of a precision interface (17). The precision interface (17) is a squat conical connection, comprising a first plane surface (19) on the first tool part (3) and second plane surface (21) on the second tool part (5), arranged perpendicular to a mid-axis (23) of the tool (1) and, in the assembled state of the tool (1), lie adjacent to each other, said first tool part (3) being made from steel.

Abstract: A tool clamping device has a spindle insert (10) and an adapter (12) between the spindle insert (10) and a toolholder (14). The adapter (12) can be pushed axially along the longitudinal axis (16) of the device into the holder (18) of the spindle insert (10), and can be fixed by a fastener (20). In addition to the fastener (20), between the spindle insert (10) and adapter (12), a torque transmission (22) establishes a positive connection between the spindle insert (10) and adapter (12). In this way, the fastener (20) is relieved of stresses and loads.

Abstract: A tool holder for use in a rotating spindle of a milling machine. The tool holder comprises a conically tapered shank portion for insertion into the spindle and a cutting tool mounting portion. Disposed between the shank and mounting portions is a flange portion. The flange portion includes a continuous channel formed therein which circumvents the shank portion and is adapted to accommodate a dampening member. The dampening member is compressable between the flange portion and the spindle when the tool holder is inserted into the spindle, and is adapted to eliminate harmonic resonance attributable to the use of the tool holder with a cutting tool.

Abstract: A machine reamer has a base and a reamer head configured as a one-piece indexable insert that axially projects beyond the front of the base. The indexable insert can be introduced in a front insert seat of the base with an axially projecting, preferably conical shoulder and can be clamped therein by a tension rod that extends through the center-axis of the base. In order to improve the rotational catch effect between the base and the indexable insert, the indexable insert has a central polygonal opening through which the tension rod engages with a complementary polygonal section.

Abstract: An exemplary embodiment of a material removal tool has a housing at a mating end, an extension longitudinally extending from the housing to a distal end, a plurality of spacers arranged along the extension, and a nut at the distal end of the extension, wherein the plurality of spacers are formed from a material having a Young's modulus of greater than about 1.5 times that of steel. The spacers along the extension of the tool place the stiffer material of the spacer at a location of greatest resistance to bending moments (i.e. highest sectional modulus). Optionally preloading and “built-in” relief points contribute to improved performance of the material removal tool. A method of manufacturing a material removal tool and a method of machining a workpiece are also disclosed.

Abstract: An apparatus can deliver a static cutting tool to a position located inside a workpiece to be machined. The cutting tool can be used for machining at least one surface inside of the workpiece. The cutting tool is operable in combination with an electronic controlled machine tool having at least one axially movable drive/support spindle. A cutting tool body can have at least one cutter and an aperture adapted for receiving the axially movable drive/support spindle of the electronic controlled machine tool. A movable carriage can be used for releasibly supporting the tool body and for transporting the tool body between a home position, where the tool body is spaced from coaxial alignment with the axially movable drive/support spindle of the electronic controlled machine tool, and a ready position, where the aperture of the tool body is in a coaxially aligned position with respect to the axially movable drive/support spindle of the electronic controlled machine tool.

Abstract: A rotatable tool includes a shank rotatable about a longitudinal axis, a drawbar mounted to an axial front end of the shank, and a cutting head mounted to an axial front end of the drawbar. The shank and the drawbar include mutually engageable screw threads which impart an axial displacement of the drawbar relative to the shank. The cutting head and the drawbar include mutually engageable serrations for transferring axial force therebetween. The serrations are axially spaced from one another and extend transversely relative to the axis.

Abstract: A machine tool for cutting a profile in a rotating workpiece has a body centered having an elongated edge formed with an angularly extending row of seats each having a radially directed seat face and an axially directed seat face. Respective Z-shaped holders in the seats each have an outer part, an inner part parallel thereto, and a flexible middle part transversely connecting the inner and outer parts. Respective fasteners releasably fixing the inner parts to the body against relative movement. Respective cutting are fixed on the outer parts of the holders. An adjustment wedge between one of the seat faces and the respective holder face is displaceable to shift the outer part of the respective holder relative to the body and transversely of the respective one seat face.

Abstract: A tool holder assembly having a tool holder and a cutting tool. The cutting tool has a stepped shank that is matingly received within the lower end of the tool holder. The stepped shank is separated into distinct sections, including: a wedging section having conical mating surfaces, a drive section having polygonal cross-sections, and a cylindrical anti-tipping section. The drive section has a plurality of walls that run parallel to the longitudinal axis of the assembly.

Abstract: The present invention provides a dynamic balancing ring for a cutter holder for balancing the cutter holder. The dynamic balancing ring includes a circle, plural fixing elements and an adjusting element. The plural fixing elements are used for fixing the circle on the cutter holder, and after the center-of-gravity position of the cutter holder is obtained by dynamic balance corrector, the adjusting element can be installed at a position on the circle corresponding to the center-of-gravity position, and through adjusting the adjusting element, the dynamic balance of the cutter holder can be corrected. For using the dynamic balancing ring for the cutter holder according to the present invention, it is convenient that the dynamic balancing ring can be directly installed on the cutter holder, which is needed to be corrected, without additional processing.

Abstract: In a chuck adapted for connection to a processing machine and composed of a connecting portion adapted to extend into the processing machine so as to securely engage the processing machine, a head adapted for holding a blade, and a flange sandwiched between the head and the connecting portion thereby/defining a gap between the flange and a bottom face of the processing machine, the improvement including: a shoulder formed on a top face of the flange portion; an annular pad supported on the shoulder of the flange portion and adapted to be mounted around the connecting portion; and a secondary annular pad mounted on and supported by the shoulder of the flange portion, and sandwiched between the shoulder and the annular pad, whereby the gap between the flange portion and a bottom face of the processing machine is compensated for by existence of the annular pad.

Abstract: A milling head particularly useful for cutting sharp interior corners in a workpiece, includes a rotary shaft coupleable to the rotary drive of a milling machine so as to be rotatable about the shaft longitudinal axis; and a conical cutter member coupled to the rotary shaft so as to be rotated thereby about a rotary axis at an angle with respect to the shaft longitudinal axis. Preferably, the conical cutter member defines a cone angle of 70 degrees, and its rotary axis is 55 degrees with respect to the longitudinal axis of the shaft. The conical cutter member is disposed within a case and is aligned with an opening in the case, such that the external surface of the case, engageable with the workpiece, is effective to align the conical cutter member with respect to the surface of the workpiece to be milled, and to enable the conical cutter member to cut sharp internal corners in all three dimensions.

Abstract: A shrink-fit chuck tool holder for cylindrical, particularly circular cylindrical, shank tools, including a fastening shank for establishing connection to a machine tool and a thermally expandable shrink section. The shrink section has an inside recess for accommodation of a tool shank and a pre-positioning section, which precedes the recess via a step and has an axial extension. The pre-positioning section is disposed eccentrically to the inside recess.

Abstract: A cutting machine includes a base, which has a worktable with a hole defined therethrough. A rolling cutter is inserted through the hole on the worktable and is rotatable on an axis to cut a workpiece carried on the worktable. A drive having a motor rotates the rolling cutter. A support arm is removably mounted on the base, and a first cutter holder is connected to the support arm to selectively hold one end of the rolling cutter, and a second cutter holder is mounted in the base to selectively hold the other end of the rolling cutter.

Abstract: The invention relates to a tool holder 1 for a rotating tool, especially a drilling head and/or milling head, comprising a drive shaft 4 that can be connected to a drive motor and a collet chuck 2 that is non-rotatably connected to the drive shaft 4 in order to hold the tool, whereby the drive shaft 4 and the collet chuck 2 are positively connected by means of a coupling element 5 for purposes of transmitting torque. In order to securely hold the tool and to concurrently have a simple construction of the tool holder 1, it is proposed for the coupling element 5 to be axially displaceable relative to the collet chuck 2 so as to release the tool.

Abstract: A dust prevention mechanism of a spindle device that ensures prevention of cutting liquid etc. from entering an inner portion of the spindle device, which saves energy and reduces noise upon stop of rotation of a spindle is provided. In a dust prevention mechanism 1, a spindle device 2 starts operating upon a command from a controller 4. Then, a 2-port solenoid valve 7 is opened to supply a predetermined amount of compressed air into the inner portion of the spindle device 2. In contrast, the spindle stops rotating upon a command from the controller 4. The controller 4 closes the 2-port solenoid valve 7, while it opens a 2-port solenoid valve 10 in a bypass route B. The controller 4 supplies compressed air, whose amount is reduced by a diaphragm 9, into the inner portion of the spindle device 2 during a predetermined time set by a timer 8.

Abstract: Disclosed is a tool holding device (22, 50, 58) for retaining a tool (24) on a tool chuck (20).

Abstract: A rotary cutting tool extending along a longitudinal axis and including a first cutting portion including a plurality of first helical teeth having a helix direction and being designed to work in a first direction of rotation of the tool. The tool also includes a second cutting portion with a plurality of second helical teeth having, as helix direction, the same helix direction as the first cutting portion and being designed to work in a second direction of rotation of the tool, opposed to the first.

Abstract: A shrink fit tool holder includes a shank or body that includes a tool holder portion, a flange member, a tapered outer surface that generally corresponds to a tapered bore of a spindle, and a central bore or aperture for accommodating a cutting tool. The central bore includes a plurality of grooves formed in a predetermined pattern that decrease a surface contact area between the tool holder portion and the cutting tool, thereby reducing an amount of conductive heat transfer between the tool holder portion and the cutting tool. As a result, there is less expansion in the tool shank relative to the tool holder.

Abstract: An arbor for detachably attaching to a main spindle of a machine tool and holding a cutting insert, including: an attachment portion for attaching on the main spindle, which has a cylindrical shape extending along the axis L; a gripping portion extending outwardly of the outer periphery of the attachment portion; and a head holding portion for detachably mounting the cutter head, the head holding portion being positioned on the distal end side of the gripping portion, the head holding portion having a mounting hole extending along the axis L toward the base end side, and the mounting hole having a female threaded portion for threadedly connecting the cutter head, the female threaded portion extending to the base end side of the distal edge of the outer peripheral surface of the gripping portion.

Abstract: A tool for fine machining of work pieces involving metal removal is proposed having at least one cutter (13) for preliminary machining with a geometrically defined cutting edge (15) and having at least one cutter (21) for final machining with a geometrically defined cutting edge (23). The characteristic of the tool is that the cutter (13) for preliminary machining is part of a preliminary machining stage (3) and the cutter (23) for final machining is part of a final machining stage (5) and that an interface (9) located between the preliminary machining stage (3) and the final machining stage (5) is provided with a first flat surface (27) and a second flat surface (29) which are located on the preliminary machining stage (3) and the final machining stage (5) and which has a device (11) ensuring the coaxiality of the preliminary machining stage (3) and the final machining stage (5) to each other.

Abstract: A tool holder is provided that is configured to deliver coolant to a work piece and/or a cutting tool. The tool holder includes a tool mounting aperture for receiving a shank of a cutting tool, and an axially extending central passage for receiving coolant deliver though a spindle of a machine tool. The tool holder additionally includes several coolant passages located around the tool mounting aperture for conveying the coolant from the central passage and distributing the coolant to the work piece and cutting tool. The coolant passages extend substantially parallel to the tool mounting aperture and are slightly radially spaced from the tool mounting aperture.

Abstract: A tool holder structure includes a holder installed on a connecting portion of a machine for holding a tool, the holder has a connecting cone for connecting the connecting portion, and a latching portion with an external diameter larger than the connecting cone disposed at the bottom of the connecting cone. The invention installs a ring between the latching portion and a surface of the connecting portion for pressing and connecting the connecting portion to define a tight engagement, so that the holder can be connected to a machine by the connecting cone as well as the ring. The invention can greatly enhance the stability for operations and the precision of manufacturing dimensions, and the invention can be used extensively for various different machines and holders of existing specifications while providing stable operations of the machines and extending the life of the machines.

Abstract: A dynamical instrument for machining comprising a sensor responsive to a non-rotating part of a machine proximate the tool of the machine for outputting a vibration signal, and a processor responsive to the sensor output configured to calculate a plurality of signature quantities which characterize the dynamics of the vibration signal and correlate the signature quantities to detect parameters associated with the operation of the machine.

Abstract: A tool coupler for connecting tool heads, such as drills, reamers, millers, turn-cutters, dies, and rams, to a tool holder. The tool coupler has a hollow shaft, a ring-shaped collar, and a gripper groove, in which gripper groove are disposed two diametrically opposite blind bore holes with varying bore hole contours.

Abstract: An annular core cutting apparatus includes a cutting head including a generally cylindrical sidewall having a first end and a second end, wherein the first end has a cutting edge, and wherein the sidewall includes a plurality of openings having at least one sharpened edge. A spindle is coaxially and rigidly coupled to the second end of the cylindrical sidewall, and the spindle configured to rotate about a rotational axis. In a further embodiment, a generally conical member is disposed within the cutting apparatus to assist with grinding and removal of waste material.

Abstract: A right angle, modular machining head can be removably mounted on the too head of a CNC machining center to provide contour machining of a work piece around a C-axis. The modular head includes a rotating drive that moves the tool around a contour axis, producing nutational motion allowing close contouring of a work piece. The tool can be powered by a driven spindle on the tool head, or by a motor carried within the modular head. A locating connection between the modular head and the tool head, in combination with a position signals produced by a rotary encoder on the modular head registers the exact position of the tool within the coordinate reference system used by the machining center control system.

Abstract: The invention relates to an interface between two parts of a tool system, in particular to a metal cutting tool (1). Said interface comprises a holder (3) provided with a cavity (31), an interchangeable head (5) which is arranged on the axial extension of the holder and provided with a projection (33) introducible into the cavity (31) and a clamping device (19) for fixing the interchangeable head (5) to the holder (3). The inventive interface is characterised in that the clamping device (19) is provided with a holding bolt (41) and an eccentric element (21) which axially displaces said bolt and is actuated through a peripheral surface (17) of the metal cutting tool (1).

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 power transmission is provided. The power transmission includes a housing including a continuous channel following a three-dimensional path. A plurality of beads is located within the continuous channel and movable therein. A first sprocket is rotateably connected to the housing and forms a first portion of the continuous channel in movable contact with the plurality of beads. A second sprocket is rotateably connected to the housing and forms a second portion of the continuous channel in movable contact with the plurality of beads, the second sprocket having an axis of rotation angled with respect to an axis of rotation of the first sprocket. A milling tool and a method of removing material from a work piece are also provided.

Abstract: The tool exhibits a first tool part (2) and a second tool part (3), which possess a common axis of rotation (A). The first tool part (2) is provided with an alignment pin (4) and exhibits at its root an annular surface (5). The second tool part (3) possesses an axial bore (7) to receive the alignment pin (4) and an annular surface (6), which is capable of being tensioned against the annular surface (5) of the first tool part (2). Tensioning structures (8, 9, 10) serve for the axial tensioning of the two tool parts (2, 3) to one another. The tensioning structures (8, 9, 10) exhibit three retaining screws (8, 9, 10) arranged distributed around the periphery of the second tool part (3), which retaining screws are each screwed radially into a threaded bore (12, 13, 14) of the second tool part (3) and each engage in a radial bore (21, 22, 23) of the alignment pin (4).

Abstract: An end mill chucking structure for chucking an end mill. The chucking structure includes an end mill holder; a shank receivable in an axial opening in the holder; a cone having an exterior cone shape adapted to be received in a drive spindle and an axial opening that is telescopically received on the shank; and a retention knob mounted on the cone and connected to the shank for axially pulling the shank toward a position in which an integral neck on the cone is received in an opening in the tool holder. The retention knob is rotated to pull the neck into a tapered structure on the shank to wedge the neck in the tool holder.

Abstract: An adaptor (20, 76, 104, 106) secures a cutting head (16) to a tool holder (12, 14) having a passage for fluid. The adaptor (20, 76, 104, 106) has a corresponding passage (68, 94) for fluid to which a nozzle (22) is connected for the distribution of fluid towards a cutting region (54) of the cutting head (16).

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: The tool exhibits a first tool part (2) and a second tool part (3), which possess a common axis of rotation (A). The first tool part (2) is provided with an alignment pin (4) and exhibits at its root an annular surface (5). The second tool part (3) possesses an axial bore (7) to receive the alignment pin (4) and an annular surface (6), which is capable of being tensioned against the annular surface (5) of the first tool part (2). Tensioning means (8, 9, 10) serve for the axial tensioning of the two tool parts (2, 3) to one another. The tensioning means (8, 9, 10) exhibit three retaining screws (8, 9, 10) arranged distributed around the periphery of the second tool part (3), which retaining screws are each screwed radially into a threaded bore (12, 13, 14) of the second tool part (3) and each engage in a radial bore (21, 22, 23) of the alignment pin (4).

Abstract: The present invention provides a machine tool capable of suppressing cost increase of a cover even when a long workpiece is machined. A machining unit 3 by which the spindle 2 is supported to be movable in X-axis, Y-axis, and Z-axis directions relative to the machining table 5; and a shielding mechanism 100 provided in said machining unit 3 to prevent chips and coolant from scattering out of a machining area.

Abstract: An apparatus is disclosed for releasably holding a toolholder shank having a lockable surface and a releasable surface utilizing an actuating bolt with an associated threaded actuating nut. When the actuating bolt is rotated in a locking direction, the actuating nut is drawn onto the bolt thereby clamping against the lockable surfaces of the toolholder shank. When the actuating bolt is rotated in the releasing direction, a releasing segment acts upon the toolholder thereby ejecting it from the tool support member.

Abstract: A milling tool holder apparatus includes a tool holder having a male structure received in a female opening of a shank, and a camming plug received in a transverse plug-receiving opening in the shank and the tool holder. Turning the camming plug in one direction moves the male structure axially to a locked position. Turning the camming plug in the opposite direction moves the male structure axially to a release position.

Abstract: A tool holder for a tool which can be rotated about an axis of rotation, in particular a drilling, milling or reaming tool, comprises a clamping shank which, in an end shank region (7), has an accommodating opening (9) which is central in relation to the axis of rotation and is intended for accommodating a retaining shank of the tool. Clamping surfaces for securing the retaining shank of the tool with a press fit are arranged on the circumferential casing of the accommodating opening. According to the invention, the end shank region (7) of the clamping shank has a plurality of at least more or less axially extending tension spokes (13) distributed in the circumferential direction, it being possible for said tension spokes to be subjected to an essentially radially outwardly directed tensile force in order for the clamping surfaces to be spread apart radially from one another.

Abstract: The invention relates to a clamping chuck for a tool comprising a device for supplying a cooling agent and/or lubricants to a feeding channel of the tool maintained by the clamping chuck. The clamping chuck comprises a sleeve for coupling a feed pipe for supplying a cooling agent and/or lubricants, the sleeve provided with a tubular element and an adjusting screw which is arranged in such a way that it is displaceable with respect to the clamping chuck in the direction of the longitudinal axis thereof.

Abstract: A tool assembly includes first and second tool bodies, a tool coupling interconnecting the tool bodies, and a drawing member for drawing the tool bodies together along a common longitudinal axis. The tool coupling includes a male portion disposed on one of the tool bodies, and a female portion disposed on the other of the tool bodies. The male portion has a plurality of tongues spaced apart around the axis, the tongues being flexible in a radial direction with reference to the longitudinal axis. The female portion has a non-circular recess defining a plurality of corner portions receiving respective ones of the flexible tongues for radially steering the tool bodies during axial mating thereof.

Abstract: A rotary tapered tool holder includes a body or shank including a front contact portion and a rear contact portion. An adapter sleeve is disposed about a portion of the shank. The adapter sleeve includes slits that allow radial expansion and contraction of the adapter sleeve. The adapter sleeve includes an inner surface formed at a first non-zero taper angle with respect to a longitudinal axis of the shank, and an outer surface formed at a second non-zero taper angle with respect to the longitudinal axis of the shank. The second taper angle is different than the first taper angle such that an interference fit between the shank and the inner surface of the adapter sleeve forces the outer surface of the adapter sleeve into positive contact with a tapered bore of a spindle of the rotary tapered tool holder.

Abstract: A tool holder is disclosed for a boring, milling or reaming tool that can rotate about an axis of rotation. At the end of its clamping shank that is located on the side of the tool, the tool holder has a bush part with a mounting opening, which is centered with regard to the axis of rotation and which is provided for accommodating a fixing shank of the tool. The mounting opening for a bush part can be radially expanded to a width, which enables the fixing shank to be inserted or removed, particularly by means of eddy currents that are magnetically induced inside the bush part by an induction coil. In addition, the mounting opening can, by cooling, be radially contracted to a width that holds the fixing shank with an interference fit.

Abstract: The present invention provides a machine tool realizing high-speed movement of a spindle and thus reducing the machining time without any increase in size of the whole machine. A machining unit 3 by which a spindle 2 with a tool T attached thereto is supported to be relatively movable in X-axis, Y-axis, and Z-axis directions is mounted on a long bed 4 having a plurality of machining areas a1 to a4 arranged in one direction, and the machining unit 3 is movable in the arrangement direction of the machining areas.