Abstract: A facer for use in preparing the opposed ends of polyolefin pipes for fusion into a pipeline has a pair of cutting wheels which rotate in unison. A controller causes the cutting wheels to trace and face the pipe end walls in a closed loop path.

Abstract: The present invention relates to a retractable shank for machine tools and use of said retractable shank in machine tools made up of a shank core, on which there is arranged at least one front unit formed by a rotating bush which is associated, by means of bearings, with respect to a fixed portion of the machine structure, this front unit being removable by means of outwards extraction or inwards movement, leaving a space in which the rear rotating shaft of the headstock can be housed.

Abstract: A tool (100) for working the internal bore of a tube comprises a motor (10), having a housing with a rotary output; a housing sleeve (14a) and shaft (22); a first bearing housing (16), having a rotatably journalled first spindle (102), mounted on the housing sleeve; and an end sleeve and shaft connected to a tool head. The motor output drives, along a common axis (1), the housing shaft, first bearing spindle, end shaft and tool head. A change mechanism (56,58) is in the tool head to change direction of said drive to transverse said common axis. An output (60) is adapted to receive a tool bit. Gauge means (18,18?) is disposed on said tool head and is adapted, in use, to bear against the bore of the tube and maintain the tool head located radially with respect to the tube axis; and support means (24,24?) is disposed on one or more of said housing shaft, first bearing housing and end sleeve adapted, in use, to bear against the bore of the tube and support the tool.

Abstract: A vertical turning-milling complex machining center comprises a horizontally-arranged bed body (6) and a vertically-arranged column (7). The bed body (6) is provided with an X-axis lateral supporting linear track (2) and an X-axis guide screw (5). The bed body (6) is also provided with a uniaxial rotating table (1) which can reciprocate and is driven directly by a first external rotor torque motor. The column (7) is vertically provided with a Z-axis lateral supporting linear track (10), a Z-axis guide screw (9) and a crossbeam (11) that reciprocates up and down. The crossbeam (11) is provided with a transverse Y-axis linear track (13), a Y-axis guide screw (12) and a single-pendulum milling head seat frame that can reciprocate along the Y-axis guide screw (12). The single-pendulum milling head is driven directly by a second external rotor torque motor.

Abstract: A machine tool accessory including a monolithic flexure travel guide, a motor, and a position feedback sensor is provided. The machine tool accessory also includes an accessory tool spindle configured to rotate a tool, the accessory tool spindle being disposed within the monolithic flexure travel guide. The motor is configured to move the monolithic flexure travel guide, and the position feedback sensor is configured to measure position of the monolithic flexure travel guide. In some embodiments, the machine tool accessory further includes a controller configured to (i) communicatively couple to the motor, (ii) communicatively couple to one or more external devices, and (iii) cause the motor to move the accessory tool spindle in response to signals received from the one or more external devices.

Abstract: A tool holder on which a nonrotational tool is mounted is mounted on a spindle of a machining center. A tool holder body of the tool holder includes a positioning pin that is inserted into the machining center and a locking mechanism. When the positioning pin is not inserted into the machining center, the locking mechanism locks the rotation of the tool holder body relative to a drive shaft. When the positioning pin is inserted into the machining center, the locking mechanism allows the rotation of the tool holder body relative to the drive shaft.

Abstract: A machine tool having a turning function and a milling function includes a spindle, a spindle housing supporting the spindle in a rotatable manner, a main clamp provided at the spindle, an auxiliary clamp provided at the spindle housing, and a double arm with a first gripper and a second gripper. The auxiliary clamp clamps a tool holder together with the main clamp during fixing a fixed tool. The double arm exchanges a tool holder grasped at the first gripper for another tool holder grasped at the second gripper by rotating and sliding movements. The auxiliary clamp is arranged at a position not interfering with the double arm that moves during exchanging tool holders. By such a configuration, a machine tool achieving a clamping force sufficient to withstand the load during a turning process, and that allows tool exchange in a short period of time, and a tool holder employed in such a machine tool, can be provided.

Abstract: A spindle attachment includes a device body having an attachment surface detachably attached to an end face of a spindle head. Fixed and movable teeth move the body in a direction of an axial line of the spindle to engage the spindle head and the body so as to freely restrict or release rotation of the body with respect to the spindle head. A coil spring urges the body so that the attachment surface is pressed onto the end face of the spindle head with the fixed and movable teeth ready for engagement. A pressure cylinder causes fluid pressure to act on the attachment surface against the spring force to release engagement between the fixed and movable teeth. A key and a key groove transmit rotation of the spindle to the body with the fluid pressure of the cylinder acting on the attachment surface of the device body.

Abstract: The invention provides an angle tool holder to be disposed on an attachment attached to a spindle head of a vertical machining center and holding the angle tool holder to enable five-face machining of a workpiece. The angle tool holder denoted as a whole by reference number 500 has a shank 510 inserted to a spindle of the main machine, wherein a rotation of the shank 510 is transmitted via a gear transmission mechanism or the like disposed in a housing 540 so that the direction of a drive shaft thereof is varied orthogonally to thereby drive the angle cutter 520. An arm 550 connected to the housing 540 has three pull stud bolts 570 disposed thereon. The three pull stud bolts 570 are arranged at 90-degree intervals, and are clamped simultaneously by three collet chucks out of the four collet chucks disposed on the attachment unit for five-face machining.

Abstract: A fixture is used to mount an angled machine head on a machine tool. The fixture includes a base adapted to be mounted on the machine tool, and a collar for holding the angled machine head. The collar is mounted for rotation on the base and allows the angled machine head to be rotated to any of a plurality of rotational positions. The collar may be selectively locked to the base to fix the position of the angled machine head.

Abstract: In an operating head, a tool assembly is provided with an inlet shaft engaged on an electrospindle and pivotally engaged through a corresponding containing casing, which is oriented about a longitudinal axis of the electrospindle by means of an electric motor coaxially mounted to the axis and provided with a rotor coupled in an angularly fixed manner to the casing itself.

Abstract: The present invention provides an attachment to be attached to a spindle head of a vertical machining center for gripping an angle tool holder and performing five-face machining. An attachment unit 100 for five-face machining comprises a ring-shaped cylinder member 110 fixed to a lower portion of a spindle head, and a clamp unit 130 directly connected to a piston disposed in the interior of a cylinder member. The clamp unit 130 is equipped with four collet chucks 140 for gripping a pull stud bolt 270 disposed on an arm 250 of an angle tool holder 200 attached to a spindle and drives an angle tool 220.

Abstract: The present invention provides an attachment to be attached to a spindle head of a vertical machining center for gripping an angle tool holder and performing five-face machining. An attachment unit 100 for five-face machining comprises a ring-shaped cylinder member 110 fixed to a lower portion of a spindle head, and a clamp unit 130 directly connected to a piston disposed in the interior of a cylinder member. The clamp unit 130 is equipped with four collet chucks 140 for gripping a pull stud bolt 270 disposed on an arm 250 of an angle tool holder 200 attached to a spindle and drives an angle tool 220.

Abstract: A gun drill having excellent cutting efficiency, having high deep-hole drilling efficiency, and having a prolonged blade service life has a cutter head having a coolant discharge port communicating with a coolant supplying path at the distal end face at the distal end of a hollow shank portion having a cutting chip discharge groove, whose section along the lengthwise direction is V-shaped, on the outer surface and having the interior thereof made into a coolant supplying path, wherein a blade portion of the cutter head is made of cemented carbide alloy, and at the same time, the guide pads and that are brought into sliding contact with the inner circumference of a cutting bore are composed of a dissimilar material having higher hardness than the cemented carbide alloy.

Abstract: A machine tool apparatus includes a transfer arm assembly and a carriage assembly. The transfer arm assembly includes a housing with a tooling end adapted to carry a tooling bit extending therefrom, a spindle extending from the housing for engagement by a chuck, and at least a first drive shaft for transferring rotational motion from the spindle to the tooling end. The tooling end is adapted to carry the tooling bit for rotation about a tooling axis that is angularly offset from a rotational axis of the first drive shaft. The carriage assembly carries the transfer arm assembly and is adapted to allow translation of the transfer arm assembly in at least two directions.

Abstract: A processing machine includes a machine bed, a spindle seat, a sliding rail unit, and a driving unit. The sliding rail unit is disposed between the machine bed and the spindle seat. The driving unit is used for driving the spindle seat to move within a slot in the machine bed, and includes a threaded rod journalled on a junction between a bottom wall surface and a lateral wall surface of the machine bed, and a nut member disposed fixedly on a junction between a bottom surface and a lateral side surface of the spindle seat and engaging the threaded rod.

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 method and a device for detecting the incorrect chucking of a machine tool capable of easily and surely detecting a chucking error; the method, comprising the steps of measuring, by a sensor (12), the change of a distance (d) between the sensor (12) and the outer peripheral surface of the flange part (2B) of a tool holder (2) installed in a spindle (3) through all around the periphery of the tool holder while rotating the tool holder (2), performing a FFT analysis of the measured data by a CPU (18), extracting a fundamental frequency component, and calculating the amplitude thereof, whereby the eccentric amount of the tool holder (2) can be calculated by using the amplitude of the fundamental frequency component and, when the eccentric amount exceeds a preset allowable value, the tool holder (2) is judged to cause an incorrect chucking.

Abstract: A tool attachable to a spindle of a machine tool in the same way as an ordinary tool, capable of being driven without connecting with an external power supply etc., giving a higher rotational speed than that of the spindle of the machine tool without supplying electric power from the outside, and able to be changed automatically, provided with a machining tool for machining a workpiece, a motor for driving the machining tool, a generator for generating electric power to drive the motor by the rotation of the spindle, and a rotational speed detecting device for detecting the rotational speed of the motor based on a received light signal.

Abstract: A tool attachable to a spindle of a machine tool in the same way as an ordinary tool, capable of being driven without connecting with an external power supply etc., giving a higher rotational speed than that of the spindle of the machine tool without supplying electric power from the outside, and able to be changed automatically, provided with a machining tool for machining a workpiece, a motor for driving the machining tool, a generator for generating electric power to drive the motor by the rotation of the spindle, and a breaker for breaking a supply line of electric current from the generator to the motor when electric current over a predetermined value flows in the supply line.

Abstract: A method and a device for detecting the incorrect chucking of a machine tool capable of easily and surely detecting a chucking error; the method, comprising the steps of measuring, by a sensor (12), the change of a distance (d) between the sensor (12) and the outer peripheral surface of the flange part (2B) of a tool holder (2) installed in a spindle (3) through all around the periphery of the tool holder while rotating the tool holder (2), performing a FFT analysis of the measured data by a CPU (18), extracting a fundamental frequency component, and calculating the amplitude thereof, whereby the eccentric amount of the tool holder (2) can be calculated by using the amplitude of the fundamental frequency component and, when the eccentric amount exceeds a preset allowable value, the tool holder (2) is judged to cause an incorrect chucking.

Abstract: A tool attachable to a spindle of a machine tool by an automatic tool changer in the same way as an ordinary tool, capable of being driven without connecting with an external power supply etc., and able to rotate at a rotational speed different from than that of the spindle of the machine tool without supply of electric power from the outside, provided with a machining tool for machining a workpiece, a motor connected with the machining tool and rotating the machining tool, and a generator to which rotary force is transmitted from the spindle of the machine tool and generating electric power to drive the motor, the shaft of the motor being arranged in an orientation different from the axial center of the spindle.

Abstract: A working unit intended to be mounted on a movable machine operated tool support includes a casing which is attached to the tool support and which supports a pneumatic turbine motor with a rotor a shank end mill type machining tool with a cutter portion extending out of the casing and a shank portion rotatively journalled in the casing. The machining tool shank portion is rigidly integrated with a turbine wheel to form the turbine rotor. A flow control valve is arranged to deliver pressure air to the turbine motor. The turbine rotor is provided with a generator device for delivering a speed responsive output voltage to a control unit which is arranged to make the flow control valve adjust the power supply to the rotation motox so as to maintain the rotation speed at a desired predetermined level.

Abstract: An operating head for automatic machine tools of the type mounted on a structure for moving along a set of three Cartesian axes having a first support, fitted to the structure for rotation around a first axis, and a chuck unit fitted to the first support, wherein the chuck unit is interchangeable and projects from the first support, and is designed to allow angular positioning around a second axis orthogonal to the first axis. The first support includes a power transmission system for the chuck unit. The connection of the chuck unit to the first support permits changing from rough to finish work by simply replacing the chuck unit, rather than replacing the entire operating head.

Abstract: An apparatus and method for in-situ milling includes a support and a pair of spaced apart rails attached to the support. The support and rails are mounted between a pair of opposed mill housing wear plate surfaces. A milling assembly is reversibly mounted on the rails in either of a first orientation and a second orientation. In the first orientation, the milling assembly mills one of the wear plate surfaces. The milling assembly is reverse mounted on the rails to the second orientation for milling the other of the wear plate surfaces. This permits the support and the rails to remain in one position between the wear plate surfaces requiring only the milling assembly to be moved to accomplish milling of each of the wear plate surfaces.

Abstract: A tool attachable to a spindle of a machine tool in the same way as an ordinary tool, capable of being driven without connecting with an external power supply etc., giving a higher rotational speed than that of the spindle of the machine tool without supplying electric power from the outside, and able to be changed automatically, provided with a machining tool for machining a workpiece, a motor for driving the machining tool, a generator for generating electric power to drive the motor by the rotation of the spindle, and a breaker for breaking a supply line of electric current from the generator to the motor when electric current over a predetermined value flows in the supply line.

Abstract: The invention provides an apparatus for positioning a cutter a tool relative to a spindle of a machine tool. The machine tool include a spindle having a rotating axis and a spindle housing for supporting the spindle for rotation about the rotating axis. The apparatus includes a shank which is adapted to be mounted to the spindle of the machine tool. A piston is provided in the shank for movement along an axis which defines an angle relative to the rotating axis of the spindle. A cutter, for machining a workpiece, is connected to the piston. A first fitting member is provided on the shank and a second fitting member is provided on the piston so as to be able to fit to the first fitting member. Each of the first and second fitting members include an abutment provided on the first and second fitting members to contact each other in the direction of the axis.

Abstract: An index-feed processing system that can reduce the machining cost of a product involving a plurality of machining processes is disclosed. The index-feed processing system comprises a plurality of processing units disposed in the longitudinal feeding direction of a workpiece corresponding to a plurality of processing processes so that the processing processes are performed sequentially as the workpiece is indexed. The processing unit body comprises a base plate and a support plate provided at a predetermined distance from the base plate, a slider provided movably between the base plate and the support plate in the direction orthogonally intersecting the base plate and the support plate, and a drive means for driving the slider. The processing units are formed as machining units so that machining operations can be performed by controlling the movement of the slider.

Abstract: This invention converts a toolhead of a computer numerical controlled machine into a locating fence by installing a fence guard on the toolhead. Since there is an indexing program in a computer numerical controlled machine to monitor a real time location of a spindle relative to a worktable, the true location of the locating fence can be easily obtained by adding an offset value indicative of the characteristic of the fence guard to numerical data indicative of the real time location of the spindle.

Abstract: A tool-driving device (1), which is particularly provided for machine tools, has an internal drive (9), which serves to drive a tool. Also provided is a control device (36), which detects the movement of the tool-driving device (1) and correspondingly controls its drive (9). The tool-driving device (1) can thus be controlled independently of the other tool-machine controls.

Abstract: A machining unit on a machine tool, especially a universal milling and drilling machine, comprising a motor-driven work spindle rotatably mounted in a casing of a spindle head, an adapter unit comprising a motor-driven adapter spindle and insertable into the work spindle, a first connecting part disposed on the spindle head and containing plug-in connections connected by lines to supplies of working media and a second connecting part disposed on the adapter unit, and containing mating plugs which can be coupled to the plug-in connections for releasably connecting the adapter unit to the working-media supply. A clamping device for releasably holding the plug-in connections and mating connections in the coupled position is disposed on at least one of the two connecting parts, thus providing a secure connection between the plug-in connections disposed in the spindle casing and the mating connections disposed on the adapter unit.

Abstract: Operating head for automatic machine tools of the type comprising a structure (2) which moves along a set of three Cartesian axes, a first support (3), fitted to the said structure in such a way that it can rotate around a first axis (C), and a chuck unit (5) fitted to the said support, wherein the said chuck unit (5) is interchangeable and projects from the said first support (3), and is designed to allow angular positioning around a second axis (A) orthogonal to the said first axis (C). Said first support (3) incorporates a power transmission system and means designed to connect the said power transmission system to the said chuck unit (5). This feature allows to change over from roughing to finishing tasks without replacing the entire head, as is necessary with known equipment in which the chuck assembly is mounted on a fork support, merely by replacing the chuck unit, a much quicker and cheaper operation.

Abstract: An adjustment and/or alignment arrangement positions a toolholder (10) relative to a toolholder mounting (12) in machine tools in a pivot movement. An adjustment part (30) cooperates with a setting part (32). The setting part (32) is provided with a mounting housing (40), in which, counter to the effect of an accumulator (34), a guiding part (36) for the adjustment part (30) is guided longitudinally slidably. The guiding part (36) can be controlled by an operation part (38). The adjustment and/or alignment arrangement is of simple construction, and consequently, is of low cost, while to a great extent facilitates the desired adjustment simply and operationally securely.

Abstract: An angle spindle attachment includes a spindle shaft 21 for mounting a tool detachably, a housing 20 for mounting the spindle shaft rotatably such that the spindle shaft is oriented to a different direction with respect to the drive shaft 3 of the spindle unit, a gear train for transmitting the drive power of the spindle unit to the spindle shaft of the angle spindle attachment. a collet means 29 for retaining and releasing the tool that is movable between a position for retaining the tool and a position for releasing the tool so as to interlock the rotation of the spindle shaft, and a switching means 24,16 for switching the collet means between a operative condition to permit the tool to be retained and released and an inoperative condition for mounting the tool undetachably.

Abstract: A structure for detachably mounting a horizontal drill head 5 on a drill head 4 including a driving spindle 10 rotatably driven by a driving means, a head case 2 for holding the driving spindle 10 above a work table 26 on which a work or works “W” are placed, and an advancing/retracting means for moving the driving spindle 10 toward and from the work table 26. The horizontal drill head 5 has a driving shaft 1 that is connected to the driving spindle 10 and horizontal drills 29 which are arranged substantially perpendicular to the axial direction of the driving shaft 1. The horizontal drill head 5 is mounted on the drill head 4 via a guide pin 7 slidable within a bearing 6 that is mounted on a sidewall of the head case 2 along a direction parallel to the advancing/retracting direction of the driving shaft 1.

Abstract: Tool extension and stability in milling machines is enhanced by providing a spindle extension having a housing attached to the mill head and an arbor rotatively mounted in a bore formed in the housing. The arbor, which is significantly longer than conventional arbors, is supported by first and second bearing assemblies and includes a substantially cylindrical body portion with an integral shank formed on one end thereof for connecting the arbor to a machine tool spindle. A cutting tool is attached to the other end of the arbor.

Abstract: A tool spindle fixing device of a composite machine tool in which a rotating-tool process is performed by driving a tool spindle into rotation with a rotating tool fitted to the tool spindle rotatably supported to a tool headstock, or in which turning process is performed by driving a work into turning with the tool spindle fixed to the tool headstock and with a turning tool fitted to the tool spindle, characterized in that: a fixed-side coupling having numerous engaging teeth is fixed to the tool headstock, a rotating-side coupling having numerous engaging teeth is fixed to the tool spindle so that the rotating-side coupling is placed within the fixed-side coupling and coaxial with the fixed-side coupling and moreover that the engaging teeth of the two couplings lie in substantially the same plane, and that a connection coupling having numerous engaging teeth is provided on the tool-headstock 12 side so as to be advanceable toward and retreatable from the fixed-side, rotating-side couplings wherein the engag

Abstract: A working machine includes a base having a working table for supporting a work piece and having a tool disposed on top for moving downward to machine the work piece. A block is secured to the base and has another tool for being selectively rotated to machine the side portion of the work piece. The another tool may be selectively driven by a motor which may drive the tool for moving downward to machine the work piece. The block has a screw driven slide to engage with the track and includes two followers for allowing the block to be secured to different vertical tracks.

Abstract: Apparatus for cutting a workpiece includes a rotatable cutting tool, a rotatable spindle for rotating the cutting tool, and a quick-connect and disconnect kinematic coupler for releasably coupling together the rotatable cutting tool and the rotatable spindle. The kinematic coupler includes a plurality of projections which cooperate with and enter a corresponding number of grooves to precisely place the cutting tool relative to the spindle and prevent relative movement between the cutting tool and the spindle.

Abstract: A hobbing accessory is disclosed for a vertical milling machine of a type comprising a column, a knee mounted to the column so as to be vertically positionable with respect to the column, a saddle mounted to the knee so as to be horizontally positionable with respect to the knee, toward and away from the column, a table mounted to the saddle so as to be horizontally positionable with respect to the saddle, in opposite directions across the column, a head projecting from the column, an arbor mounted operatively to the head and rotatable about a generally vertical axis, and a motor for rotating the arbor about the generally vertical axis.

Abstract: A machine tool extension joins a machine tool to a spindle on a milling mine. The machine tool extension has an extension collar with a cavity therethrough and a mouth at either end for joining the collar to the milling machine and the machine tool. An extension shaft is disposed within the extension collar for mounting on the spindle. The shaft has a bar aperture extending axially therethrough. A draw bar is disposed within the bar aperture for holding the machine tool against the extension collar and shaft. The machine tool extension allows machining of parts with deep cavities.

Abstract: A horizontal insert designed for horizontal insertion in a universal turret milling machine, particularly Bridgeport-type milling machine, to facilitate performance of horizontal milling, drilling, boring and tapping operations, as well as standard vertical machining operations, in one setup. The horizontal insert is characterized by a generally cylindrical quill housing designed for insertion between the bottom column element and top ram element of a Bridgeport-type milling machine or secured to a plate so mounted. In the first embodiment the bottom surface of the quill housing is bolted to the top surface of the column and the upper surface of the quill housing is bolted to the bottom surface of the turret.

Abstract: Mechanical energy is supplied to an implement on a rotating spindle, and a generator on the implement converts the mechanical energy into electric power. Preferably the energy is supplied in the form of rotary motion via the work spindle. Alternatively, a fluent medium, for example, coolant or compressed air, can be supplied, in which case the medium is used to drive a turbine wheel coupled to the generator.

Abstract: A drive shaft 40 extends through a ram 42. The ram can be driven up and down by rotating a screw shaft 35. The ram carries with it a motor 44 which drives a pulley 36 connected to the top of the shaft 40 for rotating that shaft 40. The ram 42 can be rotated upon operation of a motor 60 which drives a worm 62 to engage a worm wheel 64 which surrounds the ram 42 and is fast therewith.

Abstract: A new and improved offset drive countersink apparatus is provided for connection to a rotary drive source and includes a first driven rotating member connected to the rotary drive source. The first driven rotating member rotates around a first longitudinal axis. A first gear is connected to the first driven rotating member, is driven thereby, and rotates around the first longitudinal axis. The first gear lies in a first plane. A second gear meshes with the first gear and also lies in the first plane. The second gear rotates around a second longitudinal axis. The first longitudinal axis and the second longitudinal axis are offset from each other by a predetermined offset distance in the first plane. A housing receives the first gear and the second gear and supports the first gear and the second gear in the first plane. A countersink tool is connected to the second gear.

Abstract: A separable rotary tool adapter consists of a low-speed rotary unit (A) having casings (1, 2); a first rotary shaft (3) in the casing connectable to a driving shaft of the machine tool and a second rotary shaft (5) orthogonally drivingly connected to the first shaft; a high-speed rotary unit (B) having a casing (15) detachable to the casing of the low-speed rotary unit (A); a rotary shaft (20) in the casing of the high-speed unit having a free end portion (23) connectable with a rotary tool; and a planetary roller mechanism having two parts engageable with and disengageable from each other in the axial direction, each part being cooperatively associated with one of the high-speed rotary shaft and the second rotary shaft. In the low-speed rotary unit (A), a first part of the planetary roller mechanism is attached to the second rotary shaft (5) engaged with the first rotary shaft (3) at right angles via a transmission mechanism and includes planetary roller driving retainers (9) or shaft pins (10).

Abstract: An apparatus for operatively coupling a rotatably driven machine tool accessory, such as a right angle milling head, to a machine tool having a rotary output shaft, such as a horizontal boring machine. The apparatus includes a first collar that is mounted to the horizontal boring machine in a position that is adjacent to the rotary output shaft thereof. A second collar is mounted to the machine tool accessory and is adapted to mate with the first collar. Cylinder actuated ball locking devices are provided in the second collar and are adapted to be received in corresponding receptacles in the first collar. The cylinders are adapted to cause the ball locking devices to engage the receptacles in the first collar to thereby secure the first collar to the second collar. To disengage the second collar from the first collar, the cylinders are retracted to permit the ball lock devices to disengage the receptacles in the first collar.

Abstract: An automatic mounting and dismounting apparatus for mounting an attachment onto a spindle head, or ram, of a machine tool. The attachment is provided with a plurality of a stepped openings. A plurality of through openings, corresponding to the stepped openings, are provided on an end surface of the spindle head or ram. A collet that is radially expandable and shrinkable is arranged to be freely shifted in the axial direction of the through opening. The collet includes slits on the periphery. A stationary guide member is located at a position near the entrance of each of the through openings.

Abstract: Disclosed is a structure of a turret head provided with turning tool mounting mechanisms and revolving tool mounting mechanisms on the turret, wherein a turning tool can be mounted on the revolving tool mounting mechanism rotatably mounted on the turret. The turning tool is mounted on the turret at a holder of the tool for positioning and at the same time is tightly affixed to the revolving tool mounting mechanism at the tapered portion of the tool.Also provided is an engaging and disengaging mechanism for engaging and disengaging a gear of a unit drive shaft relative to a gear of a revolving tool mounting mechanism in preparation for mounting a revolving tool different in direction.This feature enables a revolving tool different in direction to be driven.Another feature is a provision of a lock gear. Locking the lock gear allows the revolving tool mounting mechanism to be employed for turning tools. The revolving tool mounting mechanism can be used for revolving tools when the lock gear is unlocked.

Abstract: An apparatus is provided for transmitting rotation about and translation along a first axis from a driver to a toolholder with a spindle along an axis non-parallel from the first axis. A shaft is rotatably mounted within a sleeve which is slidably mounted within a bore along the first axis. The sleeve has an inclined surface at one end which when the sleeve is translated engages an interface member to provide displacement.