Abstract: A pocket reducing insert for the pocket of an A.N.S.I. toolholder designed to nestingly accept a first cutting insert of a predetermined size and shape is in the form of a notched body of such size and shape to be nestingly received within the toolholder pocket, and the notch of the body is of such size and shape to nestingly accept a second cutting insert of smaller size or smaller size and different shape than the one which the A.N.S.I. toolholder is designed to accept. When the reducing insert is placed within the toolholder pocket, the toolholder pocket can nestingly accept the second cutting insert. An associated clamping assembly when used in combination with the reducing insert, for holding the second cutting insert within the toolholder pocket is particularly well-suited for use during machining operations during which machining pressure tends to pull the second cutting insert out of the pocket.

Abstract: A tool bit and holder assembly is disclosed wherein a tool holder having a dove-tailed tang for connection with a mounting tool post is provided with a longitudinal groove in one face thereof; the groove having parallel, longitudinally extending and angularly inclined planar side walls intersecting a planar bottom wall of the groove. A single insert tool bit of trapezoidal cross section, having longitudinally convergent, angularly inclined, planar lateral flanks fits into the tool holder groove with one flank thereof engaging one side wall of the groove. A single wedge member, having angularly inclined and longitudinally divergent planar sides engages the other side wall of the groove and the other lateral flank of the tool bit so that application of force on the wedge to move the same toward the bottom wall of the tool holder groove exerts holding force on the tool bit along three right angularly related axes to securely hold the tool bit in fixed operative position.

Abstract: A method and apparatus for machining on a rotary lathe (L) the bearing journal (14) of an elongate rotary drill bit body section or so-called lug (W). A workpiece holder (H) adapted to be removed from and positioned on the lathe (L) grips the bit body section (W) in a predetermined position. The holder (H) with the drill bit body section (W) is inserted loosely within an inclined pocket (O) on the lathe (L) defined by parallel upper and lower planar surfaces (74, 76). Positioning pins (86) on the lathe (L) engage the lower surface of the holder (H) and move the holder (H) against the upper planar surface (74) of the pocket (O) for the machining operation. After the machining operation on the bearing journal is completed, holder (H) is released by the positioning pins (86) and the holder (h) with the finished bit body section then removed from the lathe (L).

Abstract: A file/rasp tool has upstanding teeth with curved cutting edges, arranged in a plurality of rows. The rasp teeth are of generally pyramidal shape and have a cutting face with a positive rake or slope, such cutting face being defined by upwardly converging side edges surmounted by a cutting tip or edge of generally arcuate configuration having a radius of curvature at least equal to the depth of the teeth. The file teeth have cutting edges including a cap portion at the tip of the tooth and extending therefrom at a forward angle to the front face of the tooth. Such tooth configurations provide a tool which has an extended useful life.

Abstract: A bar puller adapted for mounting on a machine tool, such as a turret lathe, for engaging and pullingly advancing a workpiece bar. The bar puller has a compact cup-shaped housing provided with a stub shaft which mounts in the turret. The cup-shaped housing has a bore opening outwardly through the free end thereof, and an elastomeric grippping sleeve unit is closely fitted and seated within the bore, which sleeve unit projects axially beyond the free end of the housing. A nut threadably engages the housing and has an abutment wall which radially overlaps and axially engages the exposed axial end of the gripping sleeve. Rotation of the nut relative to the housing causes axial compression of the sleeve unit, whereby the latter elastically deforms radially inwardly so as to grippingly engage the workpiece bar as inserted into the central opening thereof.

Abstract: A spindle device has a housing, a hydrostatic fluid bearing in the housing, a spindle rotatably supported in the hydrostatic fluid bearing, a bracket securely mounted on the housing, a roller bearing on the outer circumference of the bracket concentric with the spindle, a pulley mounted on the roller bearing, and a connector connecting the pulley with the spindle for transmitting rotation of the pulley to the spindle.

Abstract: A woodworking tool for cutting plugs including a generally cylindrical, hollow bit having its working end open and of a wall thickness tapering from the working end, the wall having a through opening on one side spaced from the working end and a longitudinal slot extending from the side opening and opening through the working end, with the working end configured to define a cutting edge and stop for depth of cut.

Abstract: A lathe which rotates a workpiece on centers about an axis, with one end face of the workpiece directed axially backward and having a radially outer periphery generally centered on the axis, has a drive formed by a body axially adjacent the workpiece end face and rotatable about the axis, a motor for rotating the body about the axis, and a face plate rotationally fixed on the body and lying between same and the workpiece end face. A plurality of sets of drive formations or teeth are fixed on the face plate and directed axially forward toward the workpiece. Each set is comprised of a respective plurality of the formations angularly equispaced about the axis and radially equispaced therefrom by a respective radius different from the radius between the formations of any of the other sets and the axis.

Abstract: A metal cutting tool holder and adjusting mechanism having a rotational drive; a housing and cam mounted therein for rotation by the rotational drive; a cam follower mounted on the cam for axial motion; a wedge block axially slidably contained in the housing and adapted to be moved axially by the cam follower; the wedge block having a tapered transverse surface; and a tool holder block transversely slidably contained in the housing and adjacent the wedge block; the tool holder block having a tapered surface thereon slidably engaging the tapered surface of the wedge block but which is a reverse taper compared to the taper of the wedge block, so that the rotation of the motor drives the wedge block axially, and the tapered surfaces cause the tool holder block to move in a radial direction of the wedge block. In alternative embodiments, unidirectional controls cause the rotational drive to move the wedge block in the opposite direction. The controls include a comparative voltage electrical control system.

Abstract: A precision internal tube cutter can sever an upper end portion of a guide thimble inserted and attached within a passageway of a top nozzle adapter plate of an irradiated fuel assembly so as to facilitate reconstitution of the fuel assembly. Further, the upper end portion of the thimble can be cut without producing any burrs, roughness or distortion at the cut end. The cutter includes a body with upper and lower end portions of greater diameter sizes than that of an intermediate portion which interconnects them. A stem extends into an axial bore formed longitudinally through the body. A radial slot is defined within the intermediate body portion. In one embodiment, a pair of slides each with a cutting wheel rotatably mounted thereto are mounted within the slot. A lower conical end of the stem engages the slides and axial movement of the stem will cause radial movement of the slides.

Abstract: The invention relates to a chip cutting tool comprising at least one cutting insert, which is clamped in a holder body. The insert is clamped by means of the resilient force arising from the bending of a clamping arm which is attached to the holder body. During mounting of the insert the latter slides against the clamping arm, thereby bending same in such a way that a larger bending of the clamping arm occurs during an initial phase of the mounting of the insert than during the final phase of this mounting.

Abstract: NC automatic turret lathe with a tool turret, in which an auxiliary spindle is rotatably mounted. In order to position this auxiliary spindle with respect to its angle of rotation, an angle of rotation sensor device which controls a drive motor for the auxiliary spindle and an activatable locking device designed in the form of a freewheel are provided for the auxiliary spindle so that it may be positioned, with respect to its angle of rotation, accurately and free from play by reversing the auxiliary spindle drive motor once the locking device has been activated.

Abstract: A throwaway tip and a shank both for use in ball end mills, wherein the tip is a throwaway tip of an approximately flat plate-shape, provided at its side face with a convex cutting edge starting from the center portion when viewed from the bottom and a straight-lined cutting face following thereafter, the ridgeline of these cutting edges being formed connecting a bottom face cutting edge, a circumferential side cutting edge, and a top face cutting edge when viewed from the top. Adjoining the top face cutting edge is an inclined fixing side face for use in preventing the tip from floating up. The shank which is to bear the throwaway tip is provided with an inclined tip-fixing wall corresponding to the above-mentioned fixing side face of the tip.

Abstract: A precision file for sharpening saw teeth. The file includes a flattened oblong cross section for exact shaping of the saw teeth. Two sets of single cut teeth are cut into the file and extend over the file's longitudinal axis. A first set of teeth extends from a central lateral axis outward toward one end of the file, and a second set extends from the central axis outward towards the file's second end. The file is thus capable of an extensor cutting stroke using either end.

Abstract: A burnishing machine and method employing a pair of oppositely disposed burnishing gears. The invention involves the use of two syncronously driven gears which operatively engage teeth on opposite sides of a spline or a gear. In one embodiment, for generally elongated articles, the axes of the workpiece and the gears are generally horizontal. In another embodiment for generally flat articles, the axes of the workpiece and the gears are generally vertical. In both embodiments the gears are rotated at an angular velocity sufficient to hold the workpiece translationally stationary. In the preferred embodiment the burnishing gears have different pressure angles and therefore burnish different portions of the workpiece tooth profile.

Abstract: A method and apparatus for controlling a turning operation in which a workpiece, rotated by a spindle, is cut by a cutting tool transported axially of the spindle in synchronization with the rotation thereof. The rotational speed of the spindle is sensed prior to the start of cutting, and the tool position axially of the spindle is corrected prior to the start of cutting based on the sensed rotational speed. Alternatively, once the rotational speed of the spindle has been sensed, a correction based on the sensed speed can be effected in the position at which a signal indicative of one spindle revolution is generated. The signal acts as a start signal to initiate cutting of the workpiece.

Abstract: Rotary slot cutting tools comprising disc shaped tools having cutting elements peripherally disposed on the discs. The cutting elements include chip forming means for narrowing the width of the chip below the width of slot being cut.

Abstract: Tooling holds a workpiece for the performance of a work step thereon or thereby, which supercenters the workpiece relative to a concentrically rotatable cylinder of an apparatus. A method of supercentering a workpiece utiliezs the tooling of the invention. The tooling has a workpiece clamping subassembly which is substantially centerable with respect to a centering member and then secured thereto forming a centering subassembly. The centering member has a centering projection which is supercenterable with respect to a holder by means of several axially normal adjustment screws engaging side surfaces of the centering projection. The holder has a cylindrical arm to be clamped in a collet chuck of the rotatable cylinder of the apparatus. The method utilizes slowly rotating the cylinder, thereby rotating the tooling and the clamped workpiece, and determining eccentricity of rotation thereof, and making appropriate incremental adjustments using the adjustment screws.

Abstract: A tool for cutting material includes a holding member having a slit-like opening forming first and second spaced jaws, a cutter insert mounted between the spaced jaws in the slit-like opening, and a positioning arrangement on the holding member positioning the cutter insert in the opening, whereby the spaced jaws hold the cutter insert with a predetermined clamping pressure providing for proportional increase of the clamping pressure relative to the cutting pressure applied to the cutter insert.

Abstract: A bar puller for a machine tool, such as a lathe. The puller is provided with a body which mounts on the tool support so that the puller can be advanced radially toward the bar and also moved axially therealong to effect pulling. The body for the puller mounts a pair of rockers which project forwardly to effectively straddle the bar. These rockers mount rollers on the free ends thereof, the latter being provided with elastomeric surfaces to effect gripping of the bar. The body preferably has an adjustable guide pin which is moved to abut the side of the bar, thereby providing a three-point support. Springs urge the rockers inwardly toward one another so that the rollers grippingly engage the bar therebetween. When so engaged, the tool support is moved axially of the machine to effect the desired pulling of the bar.