Abstract: A resonant frequency dampened through-coolant machine tool for selective mounting to machining systems for precision vibration free machining and has an elongate tool body. An internal dampening chamber is defined within the machine tool body and contains a resonant frequency dampening mass that is moveable within the dampening chamber. Axial and diametrical tunable dampening devices support the dampening mass in spaced relation with internal walls of the dampening chamber. A tuning piston is moveable within the machine tool body and has a tuning flange that is disposed in contact with one of the axial tunable dampening devices. The tuning piston has a pair of oppositely angulated surfaces that are selectively engaged by angulated drive heads of adjustment screws that are supported by threaded openings of the tool body and are rotated to selectively drive the tuning piston forwardly or rearwardly for precise tuning activity.

Abstract: The invention relates to a chuck having a sleeve, a chuck body, a plurality of chuck jaws, an adjusting mechanism configured to adjust relative movement between the chuck jaws and the chuck body, at least one locating member and a pushing mechanism. The locating member is disposed on the chuck body between the adjacent chuck jaws. When the adjusting mechanism drives the chuck jaws to approach to each other relative to the longitudinal axis, the pushing mechanism pushes the locating member to move towards the longitudinal axis. When the adjusting mechanism drives the chuck jaws to move away from each other relative to the longitudinal axis, the pushing mechanism pushes the locating member to move away from the longitudinal axis. Therefore, the operation is more convenient and safer; the aligning effect is precise and reliable, and the pre-tightening force is stable.

Abstract: An adjustable holding device having a pair of adjustment drill grooves and a transverse exhaust channel. Attached to the base is a vertical support member having guide supports. At least one of the guide supports is horizontally adjustable. Drill guides are removably attached to the guide support for both vertical and horizontal adjustment.

Abstract: A chuck with automatic positioning collet is provided. The chuck includes a rotation member, over which a stationary member is sleeved. A piston is arranged inside the rotation member by means of a slidable sleeve that includes an internal thread screwed to an external thread of a collet. The rotation member includes an elastic piston pin assembly selectively alignable with a positioning groove of the collet. The stationary member is provided with two gas passages through which gas introduced may drive the piston to move in opposite directions so as to move the slidable sleeve and the collet in opposite directions to cause a tapering hole of the rotation member to loop tightly up or release the collet and an object received in the collet and the gas simultaneously drives the elastic piston pin assembly to position the positioning groove of the collet.

Abstract: A method and apparatus for angularly drilling during a tapping procedure into a pressurized multiple strings of coaxially situated tubulars for wells and/or platforms which have overturned wherein the tapping occurs underwater via a diver or remotely operated vehicle.

Abstract: The present invention provides a lathe that is provided with an eccentricity adjustment mechanism that makes it possible for electrical components that are readily affected by the environment to be eliminated from the turntable; for slip rings in particular, which exhibit problems in terms of the durability of signal transmission during high-speed rotation, to be eliminated as well, and for safe and stable adjustment of workpiece eccentricity to be easily achieved. A lathe provided with an eccentricity adjustment mechanism, in which a linear motion guide unit (6) is provided in an inclined state in an engaging part of the center part of a turntable (1) and an axial-direction-movement part (5A) of a center shaft (5); and, due to the center shaft (5) being moved, the turntable (1) moves in the radial direction by the radial pressing force generated by the linear motion guide unit (6) being inclined, and the eccentricity of the workpiece (3) is adjusted.

Abstract: A high frequency vibration spindle system which includes a spindle having a spindle housing and a spindle shaft disposed in the spindle housing; a toolholder, engaged with the spindle and adapted to be engaged with a tool; an electric power transmission device disposed at the front end or a rear end of the spindle, including a first coil and a second coil; the first coil is disposed on the spindle housing, and the second coil is disposed on the spindle shaft to be rotated with the spindle shaft coaxially; the first coil and the second coil are spaced with a gap; the second coil is adapted to receive an electric power from the first coil with a non-contact induction method; and a transducer, adapted to be controlled to vibrate the tool and disposed in the toolholder and electrically connected with the second coil to receive the electric power.

Abstract: The invention relates to a dental machine tool, in particular a dental milling machine (10), having a tool (12) that is changeable in particular via a tool bank (16), and a workpiece holder (14) for receiving a workpiece such as a dental blank made of ceramic, composite or plastics material such as PMMA, and having a housing (24) which is closable during machining by the machine tool, and having a negative-pressure connection to the housing (24). At least one air nozzle (30) that is fitted on or in the housing (24) is directed towards the workpiece and/or the workpiece holder (14) and/or the tool (12) and/or the tool bank (16) and/or a pane of a front flap of the machine tool. Said air nozzle (30) is equipped with at least one electrode for generating an electric field in the region of the nozzle or in front of the latter, and at least one nozzle comprising at least one electrode is directed towards that side of the workpiece or of the workpiece holder (14) on which the tool (12) machines the workpiece.

Abstract: A tool storage device is disposed on a side of a press brake. In the tool storage device, a lower tool holder is lifted up from lower tool holder support members, is moved forward or backward, and both end sides in a left-and-right direction of the lower tool holder are lowered after being passed through recessed portions formed on the lower tool holder support members (step (a)). The lowered lower tool holder is conveyed forward, and is positioned to a same height as a height of a lower tool mounting portion in a lower table (step (b)). The lower tool held in the lower tool holder is transferred to the lower tool mounting portion by a tool replacement device, and is mounted on the lower table (step (c)). The lower tool mounted on the lower table is returned into the tool storage device (step (d)).

Abstract: A machining tool for deburring boreholes, which lead laterally into a recess, comprising: a shaft; a cutting head with at least one circumferential cutting blade associated with a chip groove and having a cutting edge extending, at least in sections, in an axial direction, and which can perform a cutting process by virtue of relative movement between the tool and a workpiece, and which lies on a virtual cylindrical rotation surface; and at least one cutting-blade-free and chip-groove-free surface area; at least one fluid channel closed on the cutting head side, extending through the shaft into the cutting head; and at least one branch channel with an outlet opening. The outlet opening is in a dynamic pressure active surface radially set back relative to the virtual rotation surface, and is larger than a flow cross-sectional area of the at least one branch channel at the outlet opening.

Abstract: The invention relates to a bending tool storage device (1) for storing bending tools (2), comprising at least one storage unit (3), which comprises an outer tool storage (4) which is ring-shaped or partial-ring-shaped and has a plurality of guide rails (14) for holding and guiding bending tools (2), characterized in that the storage unit (3) comprises at least one inner tool storage (5, 6) which is arranged inside the outer tool storage (4) and has a plurality of guide rails (15, 16) for holding and guiding bending tools (2), and in that the outer tool storage (4) and the inner tool storage (5, 6) are rotatable relative to one another, wherein, in different positions of relative rotation between outer tool storage (4) and inner tool storage (5), at least one guide rail (14) of the outer tool storage (4) is in each case in aligned orientation with another guide rail (15, 16) of the inner tool storage (5, 6).

Abstract: A machine tool includes a machine bed, a tool clamping portion which is arranged on the machine bed and serves to clamp a workpiece on the machine tool, a swivel arm receiving portion arranged on the machine bed, a first swivel arm pivotally mounted on the swivel arm receiving portion about a first axis of rotation, a second swivel arm pivotally mounted on the first swivel arm about a second axis of rotation, a spindle carrier arm rotatably mounted on the second swivel arm about a third axis of rotation, a milling head rotatably mounted on the spindle carrier arm about a fourth axis of rotation, and a work spindle which is held on the milling head and serves to receive a tool, wherein the third axis of rotation is aligned perpendicularly or transversely to the fourth axis of rotation.

Abstract: A tool magazine (40) is able to move among a machining position where a tool (2) attached to a spindle (30) machines a workpiece, a tool exchange position where the tool (2) attached to the spindle (30) is exchanged, and a retreat position where an automated workpiece carrying device is not disturbed in placing or removing of the workpiece with respect to a workpiece placing part (20). The workpiece is placed on the workpiece placing part (20) from above or removed upward from the workpiece placing part (20) by the automated workpiece carrying device.

Abstract: A machining center for machining profiles may include: a base having a longitudinal axis, the base defining a work surface extending with first and second ends along the longitudinal axis, wherein the base is configured to receive a profile manually laid along the longitudinal axis of the base by an operator or by a specially-designed automatic feeder; a plurality of support and lock members for supporting and locking the profile on the base, wherein each of the support and lock members can be placed on respective profiled guides which extend parallel to the longitudinal extent of the base between the first and second ends, and wherein each of the support and lock members is displaceable independently along the longitudinal extent of the base; a pair of vertical columns, each of the columns supporting at least one first motorized spindle; and/or a portal structure, comprising an upper beam, above the base.

Abstract: The present invention is concerned with twist drills for drilling of composite materials such as carbon fibre reinforced plastic (CFRP) and glass fibre reinforced plastic (GFRP). The present invention proposes that a twist drill (2) is provided with a variable helix having a defined start and finish helix angle, in combination with primary and secondary relief angles such that the drill (2) is adapted to minimise thrust force, particularly when used for drilling fibre-containing composite materials and especially for hand drilling. Start and finish helix angles of 50° and 10°; 50° and 30°; and 30° and 10° have been shown to provide excellent cutting performance and exit hole quality. A large secondary chisel edge angle (24) has also been found to contribute to excellent performance with composite materials, including stack machining.

Abstract: A machine tool includes a frame with two opposite frame sections, a number of leg elements arranged on the frame, and a first carriage having a first linear axis. The first carriage is guided on the two opposite sections of the frame and is displaceable in a first direction. A second carriage of a second linear axis is guided on the first carriage and is displaceable in a second direction A tower element has a third linear axis, which is retained on the second carriage. A machining element is retained on the tower element and is displaceable in a third direction, and a tool spindle is arranged on the machining element for receiving a tool.

Abstract: A docking assembly for docking and retrieving a filament holding device includes a motor casing rod defining a recess, filament holders and docking stations. Each filament holder defines a filament receiver channel for receiving the rod and a stop member that is selectively engaged with the recess of the rod, thus coupling a filament holder to the rod for retrieval of the filament holder. Each docking station includes a deployment latch operable to rotate when the rod is inserted into the docking receiver channel so that the deployment latch urges the stop member to the deployed configuration for coupling together the rod and the filament holder. Thus, a filament holder is captured for removal from the docking station. The docking apparatus includes a release lever that operates in reverse of the deployment latch so as to release a filament holder from the rod back to its docking station.

Abstract: A tool holder holds a cutting tool that cuts a workpiece while revolving about a rotational axis. The tool holder has a fixed part and a cutting part. The fixed part is held by a main shaft of a machine tool. The cutting part is provided integrally with the fixed part and has an asymmetric shape with respect to the rotational axis. The cutting tool is attached to the cutting part. The cutting part has a one-side part and an other-side part. The one-side part has a largest protruding amount from the rotational axis in the cutting part when viewed from an axial direction. The other-side part is located on a side of the rotational axis opposite to the one-side part. A bulk density of the one-side part is smaller than a bulk density of the other-side part.

Abstract: The present application discloses a vertical lathe chuck mounting rack, which is composed of a decelerator A, a motor A, a rack, a motor B, a decelerator B, a linear guide rail C, a ball screw, a cylinder, a guide rail sliding seat C, a flange and the like, wherein the motor A is capable of driving a horizontal rack to move horizontally on a cross beam along a linear guide rail B. The motor B is capable of driving a lifting rack to move vertically along the linear guide rail C. The cylinder is capable of driving a telescopic rack to move horizontally along a linear guide rail A.

Abstract: A transfer station for temporarily storing at least one interchangeable die. The die can be removed by a joining tool to carry out a joining operation, and can be returned back into the transfer station after the joining operation. The transfer station including a die receptacle for holding the die, and a rotating device for rotating the die in the receptacle in order to establish an axial engagement between the die and the joining tool.