Abstract: A chuck device for a tool of the type having a bit on an end thereof and a drill on the other end thereof includes a spindle with a stub formed on an end thereof, a tube including a first section mounted around the stub of the spindle and a second section, a sliding sleeve slidably mounted around the tube, and a ball partially received in a transverse countersink in the second section of the tube. A first elastic member is mounted around the tube and attached between an outer shoulder of the tube and an inner shoulder of the sliding sleeve. A second elastic member includes a first end received in the stub and a second end in the tube. When the chuck device is in a condition not receiving the tool, the ball is moved out of the longitudinal hole of the tube and partially located in the annular groove of the sliding sleeve under the action of the second elastic member, and the first elastic member is in a compressed status.

Abstract: A high throughput drilling system for printed circuit board hole formation. Two spindles are disposed at each spindle station, doubling the number of holes produced in a given time period. Each spindle in connected to an overhead linear drive by a mini slide. A first set of the spindles, one for each spindle station, is driven by a first X axis linear drive. A second set is driven by a second X axis linear drive. The work piece table is elongated to support work pieces for all stations, and is supported by a set of bearing guides, with outrigger bearings coupled to the table by flexure mounts that relieve stress due to differential temperature expansion rates between the work piece table and the base table. High speed spindles are employed to obtain higher productivity, with larger holes routed by router tools, eliminating the need for stocking large drill sizes on the system tool changer.

Abstract: An arrangement for a hydraulically operated tool holder has a pressurizing system for operating a clamping device for a tool or workpiece. The pressurizing system comprises a movable operating element for pressure generation whereby the movement of the operating element causes a movement of a guideway which has an inclined or end or bend surface with respect to its direction of movement. The guideway coacts with the actuator rolling or sliding at the surface thereof whereby the movement resulting from the movement of the guideway is transmitted to at least one pressure transfer piston in a pressure cylinder. The pressure transfer piston comprises at least one support part for the actuator and a lip seal and coacts with the clamping device.

Abstract: A chuck includes a generally cylindrical body member having a forward section and a rearward section. The rearward section is configured to mate with a manual or powered driver. A plurality of angularly disposed passageways is formed in the forward section of the body and intersect an axial bore formed therein. The body defines a ledge portion about its outer circumference and a front face transverse to the longitudinal body axis. One of a plurality of jaws is slidably positioned in each passageway. A nut is rotatably mounted to the body rearward of the ledge portion so as to engage the jaws. A generally cylindrical sleeve engages the nut and includes a flexible protrusion extending axially rearward from an inner circumferential surface of the sleeve proximate the sleeve forward end. The protrusion has a tab portion disposed rearward of the ledge portion and projecting radially inward of the outer circumference of the ledge portion to prevent forward axial movement of the sleeve with respect to the body.

Abstract: A column positioning device for a drill press includes a base having a post and a positioning pin respectively extending from a top of the base. The post is received in a hollow column on which a motor is connected. The column has two positioning passages so that the positioning pin is engaged one of the positioning passages. A frame is connected a side of the column and a pusher is connected to the frame. A rod extends from the pusher and a pressing member is movably mounted to the rod. When rotating the column 180 degrees about the post, the column is conveniently positioned by inserting the pin with the other positioning passage.

Abstract: A drill used for dry drilling, characterized by the asymmetry of those cutting edge parts only whose faces are in the drill core area, in particular its entire chisel edge. This asymmetry can result from the fact that the individual chisel edges have different lengths.

Abstract: An apparatus for deburring the marginal edge of a cylindrical body, comprising a substantially enclosed cylindrical housing having (i) a circular hub, (ii) a continuous, open channel circumscribing the hub, and (iii) a circumferential rim disposed radially from the channel. The channel has (i) an inner sidewall defining the outer wall of the hub and an outer sidewall defining the inner wall of the rim, and (ii) a laterally disposed annular boss interconnecting inner and outer sidewalls so as to connect the hub and rim. A plurality of first, spaced elongated slots and second, spaced elongated slots are formed at opposed peripheries of the boss, and the first slots open through a portion of the inner sidewall and the second slots open through a portion of the outer sidewall; and the first slots are offset from the second slots and disposed radially outwardly from the first slots.

Abstract: A rotary clamping device for use in clamping and holding a metal casting tree during cutting of the metal casting tree includes a cylinder having a piston rod for actuating a plurality of clamping jaws. In one embodiment, a conically shaped cam engages exteriorly disposed clamping jaws for urging the jaws in a clamping direction. In another embodiment, an exteriorly located cam urges the jaws in a clamping direction. The number of jaws employed may vary with the shape of the metal casting tree to be gripped.

Abstract: The tool holder for machine tool includes grip 10a on an outer circumference held on an automatic exchange of a cutting edge 8. A through hole 10b is in the longitudinal center. An internal thread (g) is on one end of through hole 10b, and a tool stopper 11 is screwed on internal thread (g). A through hole 11a is in the longitudinal center of tool stopper 11. A conical engaging body 10c is on the other end of through hole 10b, so that conical engaging body 10c protrudes outwards. The conical engaging body 11c connects with a tool shank taper (n) and a flanged end face (m) of a main spindle. A mist receiving tube 12 is on a connecting side of through hole 10b, and a through hole 12a is in the longitudinal center of the mist receiving tube 12. A communicating tube 14 is in the through hole 12a of mist receiving tube 12 and through hole 11a of tool stopper 11, so that communicating tube 14 bridges them to flow cutting oil directly thereinside.

Abstract: A connector assembly for connecting a surgical saw blade to a housing of a surgical instrument. The connector assembly allows a surgeon to align, insert and lock the surgical blade in the collet of the surgical instrument without any special tools, and further provides a stable and robust platform for mounting the surgical saw blade thereto. The connector assembly includes a tapered conical shaped sleeve which is positioned within the housing and rotatable in both a clockwise and counter-clock wise direction. A pair of grippers are mounted within the connector assembly and engage the surgical saw blade when the tapered conical shaped gripper sleeve is rotated in a first position. A sternum guard is also mounted to the housing.

Abstract: The invention relates to a tool system that can be coupled to the drive shaft of a lathe. Said system comprises a tool holding fixture which can be connected to the lathe, and a took which is stored in a polygonal recess in the tool holding fixture so as to be torsion-proof yet removable. This tool has a tool shank and at least one functional section extending coaxially therefrom. The tool rests axially on a centering area in the polygonal recess, and rests radially on several identical locking elements. These are arranged in radial cavities in the tool holding fixture, at equal angular distances and at an axial distance from the centering area. This enables centering of the tool in the tool holding fixture.

Abstract: A chuck structure with locking and positioning functions includes a cylindrical body having head and tail ends, the middle thereof being provided with a plurality of inclined channels; a plurality of clamp pawls received in the channels; a limiting ring provided at the middle of the cylindrical body and having a plurality of equidistantly spaced apart through slots annularly provided at the center thereof for passage of the clamp pawls; a drive seat rotatably mounted at the head end of the body for enclosing and engaging the clamp pawls; and an outer shell for enclosing the drive seat. The outer shell includes upper and lower shell bodies. In use, the user turns the upper shell body to cause the clamp pawls to retract inwardly to clamp a tool, with the outer shell and the limiting ring providing a positioning effect so that the clamp pawls will not slip due to vibration or excessive torque, and the tightening force can be maintained.

Abstract: An improved jaw for a rod gripping device is provided including a front, rod engaging face with a plurality of teeth or studs made of a material harder than the jaw body, such as tungsten carbide, with the studs positioned to engage an outer rounded rod surface. In one embodiment, the studs are oriented radially inward toward a longitudinal axis defined by the rod engaging surface. The rod engaging face of the jaw may have a concave shape in its lengthwise direction, thus being adapted to grasp a cylindrical member such as a rod or pipe section. A tool for gripping a rod including a pair of jaws is also provided.

Abstract: A quick-connect tool change system for hand drills comprising a) a first, two ended, magnetic bit holder element fitting a chuck, b) at least one second working tool element slidingly fitting over the first bit holder element and having retaining means, The first bit holder element can comprise a natural magnet or an electro magnet selectively energized from a direct current source. A hand drill with a means to provide and transmit electric current to the electro magnet is also provided.

Abstract: A boring tool assembly is provided and has a cutting tool mounted on one end thereof and permits the boring of a straight hole through a member. The boring tool assembly includes a boring bar having integral guide members disposed thereon that follows behind the cutting tool and maintains contact with the machined surface just cut in order to keep the cutting tool in proper alignment. To permit the continued use of the boring bar after the outer diameter of the cutting tool has been reduced due to wear, each of the integral guide members are resiliently mounted on the boring bar. This permits the guide members to collapses inwardly to maintain a perfect fit with the pilot pore while maintaining bearing contact of the guide members with the pilot bore. The positive bearing contact helps to provide a dampening feature for the boring bar and a spring type force for the hardened guide members.

Abstract: A mounting fixture for a reconfigurable assembly machine having a plurality of modules with slots formed in their upper surfaces includes a square or rectangular solid block having a plurality of threaded openings. The openings receive fasteners adapted to secure various and diverse assembly machine components and devices to the mounting fixture. One surface of the block includes a channel or keyway having a width equal to the width of the throat of the slots formed in the upper surface of the assembly machine module. A locating key is received in the keyway in the block and the throat of the T-slot. The locating key includes through openings which receive threaded fasteners having heads held captive and the T-slot which, with suitable nuts, secure the block to the upper surface of the module.

Abstract: A clamping mechanism for clamping a cutting head to an adaptor; the adaptor having a shank receiving bore and three forwardly slanted unthreaded through bores; the cutting head for clamping to the adaptor having a shank with three forwardly slanted threaded bores. The arrangement being such that with the shank inserted into the shank receiving bore the cutting head is clamped to the adaptor by three retaining screws which pass through the unthreaded through bores and are threadingly engaged by the threaded bores.

Abstract: This invention discloses a chuck apparatus actuated by a fluid including a body, a plurality of master jaws slidably mounted in the body, a fluid driven piston mounted for axial motion relative to the body along an axis, the piston comprising a plurality of bores extending therethrough along bore axes inclined with respect to the axis, and a plurality of shafts, each slidably mounted in one of the plurality of bores and being coupled to one of the master jaws, and wherein axial movement of the piston along the axis causes the plurality of shafts to move and to cause the plurality of master jaws to move therewith.

Abstract: A circular flexible collet that provides a 360 degree gripping engagement with a cylindrical workpiece and which is operable by an actuator member incorporated in a workpiece chuck. The collet may be constructed as an internal collet for gripping engagement with a workpiece internal periphery, or as an external collet for gripping engagement with a workpiece external periphery. The flexible collet may be used for single, or plural workpiece gripping actions. The collet includes a split spring steel body having a radial opening split space and an outer and an inner circular periphery. One circular periphery is a workpiece gripping surface, and the other circular periphery has a tapered cam surface engageable by a workpiece chuck actuator member. The tapered cam surface has a plurality of circumferentially spaced apart slots, having an open outer end. In an internal collet the tapered cam surface is formed around the collet body inner periphery.

Abstract: A clamping device has a collet or a sleeve that contains an inner coolant supply. The non-through parts of the clamping device have formed therein radial slits and/or intermediate slits that open at the machine side and/or the tool side of the shank of the device. The slits and non-through parts of the device are arranged in such a way that they form a coolant barrier.