Abstract: A carrier and a head having fastened thereon a cutting place are connected with one another exclusively by a form-fit coupling. A first contact surface of the head grips under the carrier. A second contact surface of the head above the first surface grips behind an abutment of the carrier and a third contact surface of the head arranged between the first and second contact surfaces thereof serves for transmission of the cutting load.

Abstract: A tool (12) is releasably supported on a head (10) by a kinematic support (35) having elements (36,37) provided respectively on the head (10) and the tool (12) and extending in a plane (A--A) transverse to an axis (10A) of the head (10) by a releasable coupling (17) which comprises a first element (21) provided on the head (10) and engaged with a second element (26) provided on the tool. To release the tool (12) from the head (10) the latter is moved to position the tool (12) at a magazine (16) and by such movement to connect the second element (26) with an operating member (41) provided on the magazine (16). Rotation of the second element (26) by the operating member (41) releases the second element (26) from the first element (21) and frees the head (10) for withdrawal in the direction of its axis (10A).

Abstract: A holder for a rotary cutting tools has a holder body fixed to a spindle of a machine tool. A rotatable shaft concentric with the holder body and having a tool-mounting portion at one end thereof is coupled at its other end portion to the holder body to receive torque from the holder body. The rotatable shaft is so mounted as to be radially displaceable and inclinable relative to the holder body. A positioning member is fixedly disposed on the machine tool body radially outwardly of the spindle. A cylindrical casing disposed radially outwardly of and rotatably engaged with the rotatable shaft such that the casing and the shaft are rotatable relative to each other, the casing being engageable with the positioning member for accurate positioning thereof by the positioning member, and thereby positioning the rotatable shaft.

Abstract: A tool holder for holding a rotary cutting tool, attachable to a spindle of a machine tool, has a holder body fixed to the machine spindle. A rotatable shaft having a tool-mounting portion is coupled to the holder body such that the shaft is axially and radially displaceable relative to the holder body. A positioning member is fixedly disposed on the machine tool body radially outwardly of the machine spindle. A casing is disposed radially outwardly of the rotatable shaft such that the casing and the rotatable shaft are rotatable relative to each other, the casing being engageable with the positioning member to accurately position the rotatable shaft when the holder body is fixed to the machine spindle. A guide bushing is fixedly supported at one axial end portion of the casing remote from the holder body.

Abstract: This invention relates to high speed spindles employing a tool holding mechanism which rotates with the spindle. In machining applications utilizing high speed spindles which operate above 20,000 RPM, it is desired to manufacture such spindles so that they maintain their balance. Spindles which employ tool holding mechanisms are required to grasp and release tools between machining operations. Such mechanisms usually employ springs for either holding tools in a collect or returning the release mechanism. This invention discloses two types of springs which are true flexures and are held integral with the spindle shaft. The nature of the design is such that it affords the minimal amount of structural position deviation after each actuation for tool changes, thus minimizing out-of-balance conditions.

Abstract: A chuck assembly for use in a machine tool for holding a tool element comprises a chuck body having a sleeve integrally formed therewith so as to extend in the direction, which sleeve has a support bore defined therein for the receipt and support of the tool element and also has its outer peripheral surface tapered in a direction away from the chuck body, a fastening nut having its inner peripheral surface tapered in complemental relation to the outer peripheral surface of the sleeve and helically rotatably mounted on the sleeve through a plurality of roll bearings, and a reinforcing nut threadingly mounted on the fastening nut and adapted to be engaged under pressure with the chuck body when the fastening nut has been fastened and the reinforcing nut is then fastened.

Abstract: Locking and unlocking device for cartridge-type tools used in a toolholder mounted on a machine tool ram comprises transmission apparatus (20) connected to control apparatus (24) and arranged to slide axially within a rotating block (23), said transmission apparatus carrying a pin (19) operable to selectively actuate any of several secondary plungers (12) slidably mounted in hydraulic cylinders (11) provided in the toolholder (3), said cylinders being connected via ducts (10) to hydraulic chambers (8) in the top of the toolholder, and said cartridge tools (6) being carried in hollows (5) therein.

Abstract: A tool for cleaning or repairing the screw threads on studs, bolts and the like comprises inner and outer relatively slidable sleeve members and a series of die elements rockably mounted between the sleeve members adjacent one end or mouth of the tool so as to be urged by relative sliding movement between the members in opposite directions between the expanded position and a contracted position in which inwardly facing thread cutting teeth on the die elements are urged into a thread engaging position with a threaded member inserted into the mouth of the tool.

Abstract: A chuck for non-circular ends of tool shanks having a bushing forming a chamber corresponding in cross-section to the tool shank and a ball which acts on the shank and is clamped by a spring biased sleeve which forms a wedge against the ball. The ball is mounted in a separate wing which is engaged by the sleeve and is displaceable relative to the bushing so that the ball engages a clamping surface formed by an end ring and the tool shank in a clamping position.

Abstract: A tool holder for securing a drilling or chiseling tool in a device includes a guide tube for receiving the cylindrically shaped shank of the tool. An adjusting sleeve laterally encloses the guide tube and the sleeve is axially and rotatably displaceable relative to the guide tube. When the adjusting sleeve is axially displaced a cam projecting from one of the adjusting sleeves and the guide tube contacts a cam surface on the other for effecting the rotational displacement. The cam surface is inclined relative to the axial direction of the guide tube. Openings extend through the guide tube between its inner and outer surfaces and recesses in the inside surface of the sleeve register with the openings when the sleeve is rotatably displaced. Locking elements are radially displaceably mounted in the openings in the guide tube and secure the tool shank in the holder.

Abstract: The power tool has a magnetic base with superposed permanent magnet assemblies. The upper assembly can be moved relative to the lower assembly to subtract from or reinforce the magnetic field. When the sensing probe is pushed into the base the electric motor can be switched on to rotate a spindle on which a rotary cutting tool is axially mounted. The tool feed is controlled by a handle which can be mounted on either side of the tool housing. A coolant reservoir on the base has a hose connected to a pump which is connected to a manifold supplying coolant to the center of the cutting tool. The cutting tool is biased upwardly and pinches off the coolant when the tool is raised from the work. The tubular tool shank is retained on the drive spindle by balls carried by a cage and moved into engagement with a groove in the tool shank by a cam surface on a release collar spring biased to move the balls to engage the tool.

Abstract: A boring block and tool holder is disclosed having an opening therein. The block is made of a thick rectangular plate having inserts set into its front corners and inclined surfaces adjacent its rear edge forming a noncircular tang part having two rearwardly facing shoulders adjacent the tang portion which is received in a slot in a boring bar. The shape of the slot is complimentary to the shape of the tang part of the block. A tapered hole through the tang aligns with a tapered hole in the boring bar and the tapered hole in the block receives a taper pin which forces the block rearward bringing the block into firm rigid relationship with the end of the bar thereby clamping the block in positive rigid relation to the bar. The block has more strength than previous blocks because the block is thicker below the cutting inserts and there is more metal below the cutting insert, yet it can use the same bar and same slot width as rectangular blocks.

Abstract: A tool support assembly comprising a rotary spindle which carries a tubular body having a socket therein for the removable accommodation of a coupling member to which any one of a number of tools may be fitted. The coupling member is adapted to be fitted to the tubular body during rotation of the spindle and thereafter to be driven by the spindle. Yieldable, shock absorbing, replaceable plates are carried by the coupling member and the rotary body to cushion the initial engagement therebetween. The coupling member and the socket have axially elongated, complementally tapered and cylindrical surfaces to provide substantial lateral stability for a tool supported by the coupling member.

Abstract: A boring bar is disclosed having an elongated body adapted to be rotatably driven around a predetermined axis. A longitudinally extending bore is open to at least one end of the body and has an axis which intersects the body axis at an acute angle. A cutting tool has an elongated shank with a cutting edge at one end while the other end of the shank is slidably received within the bore so that the radial displacement of the cutting edge with respect to the cutting axis is directly proportional to the longitudinal position of the shank within the body bore. A nut threadably secured to the body engages a radially extending pin secured to the shank in order to adjust the longitudinal position of the shank within the bore.

Abstract: The rotary disk for a lathe has near the circumference thereof a plurality of insert-receiving recesses (5) which are circumferentially spaced apart. For each insert-receiving recess (5) there is provided an insert disk (6) which can be removably inserted therein and within which a receiving bore is concentrically arranged. Each insert disk (6) has in the region of the cylindrical receiving bore (8) two diametrically opposite, radially extending screw-threaded bores (9, 10), a clamping screw (11) with a conical recess (12) being screwed into the screw-threaded bore (9) which is located more inwardly with respect to the axis of the rotary disk and a clamping screw (13) with a conical end part (14) being screwed into the screw-threaded bore (10) which is located more outwardly with respect to the said axis.

Abstract: Adjustment of the radial position of the tool bit is accomplished by insertion of the bit in a recess of a clamping shoe which clamps the bit against a shoulder in the cutter head. The clamping shoe has an extension which is rotatably mounted in a recess in the cutter head. A single wedge-shaped adjustment member rotates the clamping shoe with the cutter blade thereby changing the radial distance between the cutting edge and the axis of rotation of the tool.

Abstract: A machine tool has a machine tool body (3), a spindle (1) having a supporting portion (2) and being rotatably supported by the machine tool body (3), and a tool holder (5) having an inserting portion (6) which is attached to the supporting portion (2). A ceramic layer (10, 11) is provided on the supporting portion (2) of the spindle (1) and/or the inserting portion (6) of the tool holder (5).

Abstract: A device for rethreading and cleaning threaded pipe studs having an elongated casing having an outside surface provided with flat portions for attaching to a torquing means, which casing is provided with a straight channel therethrough shaped to allow passage of the pipe stud with at least a portion of the channel sidewalls having an inside diameter slightly larger than the outside diameter of the pipe studs, and having multiple threading dies attached to the channel sidewalls at one open end with the teeth protruding perpendicularly from the channel sidewalls, wherein the teeth on each threading die projects consecutively shallower into the channel as they progress from the open end.

Abstract: An elastomeric sleeve is fitted within a spindle bore over a coaxial spring assembly used to actuate a drawbar clamp. The sleeve takes up the radial clearance space normally provided for the spring assembly, so that as the diameter of the spring assembly changes during compression cycles, the sleeve will be radially compliant and tend to keep the spring assembly centered, thereby minimizing vibrations while the spindle is rotated.

Abstract: A tool clamping device used with a machine tool is provided for clamping a tool on a tool spindle. In a bore of the tool spindle, there is axially movably received a guide bush which is formed with a recess for permitting steel balls to retract toward radial outward directions. A retainer for holding the steel balls is received in a bore of the guide bush for axial movement relative thereto. The guide bush is connected to a draw bar which is axially movable in the bore of the tool spindle and which is spring-biased toward a rearward direction of the tool spindle. Thus, when the draw bar is spring-drawn toward the rear end of the spindle, the steel balls are restrained from radial outward movements through engagements with the internal surface of the guide bush thereby to clamp the pull stud of the tool.

Abstract: A tool retention mechanism is disclosed for clamping a tool holder knob. An elongate rod member is supported lengthwise in a compartment formed within the center of an elongate housing. A knob clamping assembly is mounted on the outer end of the rod member and is constructed of a circular array of claw fingers that are spring biased to urge them to move radially inward. A first piston is slideably supported on the actuator rod rearwardly of the claw fingers and has a cylindrical collar portion which slides over the claw fingers to retain them in a knob clamping position. A second piston is secured to the inner end portion of the actuator rod and slideably supported in the compartment to define a closed chamber with the inner closed end of the compartment.

Abstract: A device for mounting a turning or milling tool-holder on the slide of a machine-tool, wherein a sleeve is mounted for sliding inside the slide body, said sleeve receiving internally a rotary spindle, and being designed to occupy one position in which it is moved inwards of the body and in which the turning tool-holder is immobilized on the seat of the slide, by means of notchings or serrations, under the action of an axial force exerted by one of the ends of the spindle on the turning tool-holder, and another position in which said sleeve is moved out of the slide body and brought against a centering seat of said body, for which the milling tool-holder is mounted on the end of the spindle which is rotatable under the action of rotating drive means.

Abstract: A quick change tool retention device for attachment to a power operated mechanism, such as a power operated hand drill, provided with a body portion and a release means attached to a spring-biased leg portion so that a tool, provided with a groove for interlock with the leg portion, can be brought into a keyway and locked in place until such time as the release button is depressed, thereby depressing the leg portion against the spring biasing and releasing the tool from retention via the groove.

Abstract: A spindle head for a machine tool rotatably carries a tool spindle, which is drivingly connected with an output shaft of a drive motor provided in axial alignment therewith. A drawing bar received in an axial through hole of the tool spindle is urged by means of springs for clamping on the tool spindle a tool being inserted into a front tapered bore of the tool spindle. In order to move the drawing bar against the springs and thereby to unclamp the tool from the tool spindle, an annular cylinder device is provided around the tool spindle. This cylinder device, when supplied with pressurized fluid, moves first and second operating members toward and away from each other in the axial direction of the tool spindle.

Abstract: A motor-incorporated spindle head unit is provided with a rotatable spindle on which a rotor assembly of the drive motor is fixedly mounted. A stator assembly of the drive motor is arranged around the rotor assembly and is fixed to a housing of the spindle head unit. A heat insulating system for preventing heat transfer from the stator assembly of the drive motor to the spindle as well as the bearings supporting the spindle is arranged between the drive motor and the front part of the spindle. The heat insulating system uses the flow of air for forming a heat insulator during the operation of the spindle head unit. A cooling system for cooling the stator assembly of the drive motor is also incorporated in the housing of the spindle head unit.

Abstract: A boring head is retained to a connecting shaft by means of a cylindrical fastening spigot, using a retaining screw with a conical end which engages a conical transverse bore in the spigot such that the boring head is tightened by wedging effect against the connecting shaft. The fastening spigot is provided with a cylindrical transverse bore, at an approximate right angle to the conical transverse bore in the spigot, and a longitudinally displaceable drive pin is supported in the cylindrical transverse bore such that the ends penetrate, with slight play, into recesses in the connecting shaft. During the transmission of torque, the drive pin is automatically centered so that the forces developed are evenly distributed between the two ends of the drive pin, so that the device is particularly suitable for the transmission of high torques, whether of a gradually increasing or an impulse type, and is usable either with a clockwise or a counterclockwise movement.

Abstract: A mounting chuck for attachment to a drill having a rotatable collar on a main chuck portion. The main chuck portion includes a cavity receiving therein a tool mount having a tool removably secured therein at either or both ends thereof. The mount conforms to the cavity and the collar encircles both the cavity and the mount to selectively either retain the mount in fixed position on the chuck portion or allow the mount to be removed therefrom. The chuck portion includes a hollow axially extending chamber so that one of the tools on the mount may extend into the chamber while the other tool on the mount extends out from the chuck portion in an operative position. In this manner, the tools on the mount may differ and either tool may be quickly and easily selected.

Abstract: A device for clamping boring bar in a horizontal boring and milling machine comprises a resilient clamping ring interposed between a milling spindle and the boring bar, and an accumulator secured to the milling spindle for supplying pressurized oil to the clamping ring. An oil supply unit is provided for controlling oil supplied into the accumulator when the milling spindle is stopped at a predetermined angular position relative to a stationary part of the machine.

Abstract: A collet assembly for releasably holding a tool shaft of the type having an indexing depression in the surface thereof includes an elongate core having a bore in one end thereof for receiving the tool shaft. A retainer extending transversely through the core is shiftable into a locking position within the depression in order to prevent rotation of the shaft relative to the core. A tapered sleeve longitudinally slidable over the core engages and drives the retainer into the core. A collar threadably mounted on a core draws the sleeve in one longitudinal direction over the core in order to maintain the sleeve in a position locking the retainer in place.

Abstract: A tapping attachment includes a housing and a shaft, the shaft being associable with a source of rotational energy to cause forward or reverse drive of a tapping spindle which carries a tap which is intended to do work upon a work piece. The shaft of the tapping attachment is provided with a collar having a recess therein. Associated with the housing is an indexing mechanism including a housing, a spring biased plunger insertable into the housing for limited movement therein, and a bracket arm operably associated with the plunger. The bracket arm includes a radially projecting extension insertable into the recess of the collar to fix the shaft in a desired position and also an axially extending arm engageable with a boss on a machining center to fix the housings relative to the drive imparting machine and also to disengage the radial extension from the collar to permit rotation of the shaft and inner workings of the tapping attachment.

Abstract: A lever is mounted about an oscillation axis for limited oscillation relative to a first component. A linear tension spring latching member is mounted for rotation on that lever about an axis eccentric to the oscillation axis, the latching member being mounted for frictionally retarded rotation. In the joined condition of second and first components, a latching pin projects from the second component in parallel spaced relation to the oscillation axis and the latching member axis. The tension spring latching member includes a latching hook at its distal end for engagement with the latching pin so that in the latched condition in the components, the spring latching member is tensioned between the latching pin and the eccentric axis.

Abstract: The coupling arrangement according to the invention is universally used for modular tool-systems and its simple construction allows economic production. The threaded bore of one of the elements to be engaged is provided with thread identical with that of the other element, and differential screw is screwed into these threads, furthermore the driving element is such driving pin one half of which is fitted into the parallel and excentric bore of one of the elements, while the diameter of the other half is smaller, its end excentrically arranged in relation to the former half is provided with a conical end section and fitted into the bore of the other element.

Abstract: A combined tap and die holder which comprises a housing including a circular recess for receiving a die and two diametrically opposite tubular recesses for receiving two clamping members for clamping a tap. The clamping members are retrated in the tubular recesses when the die is placed in the circular recess.

Abstract: A spindle headstock of a multiple-operation machine tool, whose housing accommodates, in a coaxial and rotatable arrangement, a spindle kinematically coupled to a rotary drive, a tie rod carrying members intended for connection to the shank of a boring head having a swivel carriage, which tie rod is axially adjustable in relation to the spindle, and a bar carrying toothed members for meshing with toothed members mounted on an end of a slide bar whose opposite end serves for radial displacement of the carriage. The bar is kinematically coupled to a drive whereby it is displaced in the axial direction in relation to the spindle. The members of the tie rod, which serve for connection to the shank of the boring head, are mounted on the tie rod so that they can radially reciprocate during location of the tie rod. For radial adjustment of the bar, a bushing is provided on the tie rod, which is axially stationary in relation to the tie rod and kinematically coupled to the spindle and bar.

Abstract: A quick-change chuck for holding a tap of a tap drill comprises a member connectable to the spindle of the drill and a chuck head for holding the tool. The chuck is further provided with the device for an axial compensation for a difference between the spindle stroke and the pitch of the thread of the tap drill. This device includes a compression-responsive device which makes possible an axial compensation in the case of the compression force directed towards the spindle-receiving member, and a separate independent tension-responsive device which makes possible an axial compensation when a tension force acts on the chuck in the direction away from the spindle-receiving member. Each axial compensation device includes axially displaceable balls positioned in axial cylindrical passages provided in the spindle-receiving member and the chuck head, respectively.

Abstract: The boring tool has an insert upon which one or two boring heads are slidably guided along a swallowtail track. For fixing the boring heads in position, set screws are provided which are adapted to bear against the clamping surfaces of the insert. To preclude radial sliding of the boring heads, even when the set screws are only partially tightened, the clamping surfaces are inclined relative to the longitudinal axis of the insert, and the spacing of the clamping surfaces from the longitudinal axis increases toward the ends of the insert.

Abstract: A tap holder adapted for attachment to the main spindle of machine tool to cut internal threads in a workpiece, the tap holder including a floating mechanism by which the tap holding spindle is smoothly moved in the axial direction, the floating mechanism being featured by a single coil spring compressible in association with the axial movement of the tap holding spindle, and by its feasibility that a possible error occurring between the lead of the tap and the feed of the main spindle of the machine tool is automatically corrected.

Abstract: A holder is provided for attaching a tool, having a tapered end and a flat driven face on the end, to a rotary drive, such as a drill. The holder has a body with a bore coaxial with the rotary axis. The bore is tapered at one end for slidably receiving the tapered tool end and typically is threaded at the other end for receiving the threaded end of an adapter. The other end of the adapter has six sides for attaching the tool holder to the drill. A flat driving face is provided at the tapered bore for engaging a complementary driven face formed in the tapered end of the tool. The tool is secured axially within the tapered bore by a latch element which extends into the tapered bore to engage a recess in the tapered end of the tool. The latch element can be a pivotal latch plate mounted for movement in a radial plane or a radially extending detent assembly. The latch element can also be magnetic.

Abstract: A reversible drill and drive tool holder for use in performing a series of similar drill and drive operations. The tool holder consists of three major parts: a hollow cylindrical locking sleeve; an elongated shaft lying partially within the sleeve and having one end adapted to be held in the chuck of an electric drill and the other end forked; and a tool holding member rotatably pinned into the forked end of the shaft. The tool holding member has a socket at each end for holding a drill bit at one end and a driving tool at the other end. The shaft is held within the cylindrical sleeve by a spring-loaded pin and is capable of axial movement within the sleeve. When the shaft is moved forward against the spring, the tool holding member is freed to rotate about the pin in the front fork of the shaft, thus permitting either a drill bit or a driving tool to be moved into operating position.

Abstract: A collet release device for rotating the draw bar on a milling machine is disclosed. The device includes a pneumatically-driven impact wrench which can be lowered to engage and drive the draw bar in the desired direction. The structure of the device includes a frame which is mounted at the top of the milling machine near the drive head of the draw bar. A carriage, which supports the impact wrench, is slidably mounted on the frame and may be lowered by a pneumatic piston. A single control switch actuates both the impact wrench and the piston. Depressing a first button on the control switch causes the impact wrench to engage the draw bar and rotate in a first direction, while depressing a second button causes the wrench to engage the draw bar and rotate in the opposite direction.

Abstract: This invention relates to means for connecting a male part with a female part, the male part being provided with a shaft that shall be inserted into a corresponding cavity in the female part and is retained there by means of a frictional device, the female part being to transmit a torsional moment to the male part.

Abstract: A tool holder clamping and unclamping device utilizes a special combination of a Belleville spring biased bolt threading device to actuate a ball detent mechanism to lock a tool holder in the device.

Abstract: A keyless chuck gripping device for opening or closing jaws of a chuck of a rotary tool without using a chuck key includes a first portion having a surface extending at least partially around an outer surface of a chuck locking drum. The first portion is attached to a forward housing portion of the rotary tool or the outer surface of the chuck locking drum. A second portion connected to the first portion is urged into frictional or lock engagement with the unattached portion of the rotary tool where manual actuation alters rotational speed of the chuck locking drum relative to the speed of the rotary tool shaft. The second portion maintains the chuck locking drum in a stationary position while the shaft is driven by the motor, enabling the chuck locking drum to turn the chuck jaws in forward or reverse direction.

Abstract: A toolholder for a rotary tool has a driving part adapted to be coupled to a machine spindle and a driven part in which a cutting tool may be mounted along a tool axis. The driving part and the driven part are coupled to permit pivotal movement and lateral movement perpendicular to the tool axis by a joint mechanism. This joint mechanism includes a substantially spherically shaped recess in which a substantially spherically shaped body is mounted for pivotal movement to all sides.

Abstract: Tool with automatic exchange of different working fixtures on a main holder of a machine tool, particularly adapted for digitally controlled coordinate machine tools, where the exchange, selection, and clamping of a required working fixture, stored in a storage container of working fixtures, proceeds automatically according to a prior determined program without manual attention by an attendant.

Abstract: A removable element for a tool system is disclosed. The element may be used in a system of slide-on tools and adaptors that eliminates a two-handed operation for changing tool bits. The element comprises at least one prong located at one end at a selected distance and substantially parallel to an axis of rotation of the tool system. The prong is adapted to slidingly fit and rotationally abut with another element of the tool system to transfer rotary motion between the elements, and means are provided for supporting a tool bit on the axis of rotation at the other end of the element from the prong.

Abstract: The spindle of a machine tool has a drawbar disposed therein for threaded engagement into and out of the toolholder inserted into the spindle bore to releaseably secure the toolholder within the spindle. Splined on the rearward end of the drawbar distal from the spindle is a spur gear which is shiftable into and out of engagement with a cluster gear driven by the spindle drive motor. When the spur gear on the rearward drawbar end is shifted into engagement with the cluster gear driven by the spindle drive motor, the drawbar will be rotatably threaded either into or out of the toolholder shank by the spindle drive motor and thus, the need for a separate motor to rotatably drive the drawbar is eliminated.

Abstract: A chuck has a chuck body adapted to be rotated about an axis and formed centered on the axis with a forwardly open tool-receiving seat. A holding element is displaceable axially in the body between a rear holding position securing a tool in the seat and a front releasing position permitting the tool to be inserted backwardly into and withdrawn forwardly from the seat, with a holding spring urging the element backwardly into the holding position. A piston axially coupled to the holding element has an axially backwardly directed piston face exposed in a chamber formed between this axially backwardly directed face and the forwardly directed face of an actuating member that is urged axially forwardly by a locking spring. A plurality of locking balls are displaceable radially but not axially in the chuck between radially inner locking positions engaged in a groove in the piston and radially outer positions engaged in a groove in the actuating member.

Abstract: A complete set of mating tools to be powered by an electric motor, or a hand held drill, for use in deburring shell casings, reaming primer pockets and cleaning and polishing shell casings, said set of mating tools comprising an adapter barrel, an adapter sleeve, and a case spinning tool, and said set containing a burring tool and a primer pocket reamer.

Abstract: Pressurized hydraulic fluid for energizing the collet unclamping mechanism of a machining center is supplied through a first solenoid valve from an accumulator which is charged by a piston pump. The piston pump is attached to the machining center between the Z axis slide and the Z bed so that as the Z axis slide is moved to a home position at the outset of a tool change cycle, the pump charges the accumulator, allowing pressurized hydraulic fluid to be admitted into the collet unclamping cylinder through the solenoid control valve in response to machining center control system commands. Following pressurization of the unclamping mechanism from the accumulator, both the unclamping mechanism and the piston pump drain to the oil sump to reduce any drag on the Z axis slide or on the unclamping mechanism itself.