Abstract: A die stock comprising a holder, which is symmetrical to a centric holder longitudinal axis, wherein the holder has a plurality of receiving grooves each of which is configured for receiving a cutting insert and a clamping wedge, each of the receiving grooves extending from a first end face of the holder in the axial direction, the first end face running transversely to the axial direction, and wherein each of the receiving grooves extends from an inner side of the holder in a radial direction, the inner side facing toward the holder longitudinal axis. The die stock further comprises a plurality of cutting inserts, wherein each cutting insert has, on a front side that faces substantially toward the holder longitudinal axis, at least one cutting edge. The die stock further comprises a plurality of clamping wedges arranged detachably in the receiving grooves.

Abstract: The invention relates to a tool holder on a drill transmission for tubular drilling tools having at least two different diameters, wherein the holder is equipped with a hollow-cylindrical recess and with at least one radially oriented locking bolt which is installed in the wall of the hollow-cylindrical recess and which engages in a corresponding opening in the drilling tool, wherein there is at least one further hollow-cylindrical recess which is complementary to one of the different drilling tools.

Abstract: An orthopedic cutting tool for reshaping the end of a femur is described. The cutting tool comprises three separate cutting blades that are positioned within different locations within a housing to reshape the end of the femur to thus receive a femur head prosthetic. The cutting tool forms the reshaped femur end in one cutting motion.

Abstract: A drill tool including a drill body having an inner insert and an outer insert at an end portion of the drill body. The distance from a central axis of the drill body to the outer insert is greater than the distance from the central axis to the inner insert. The cutting edges of the inner and outer inserts can be chamfered with the inner insert chambered at a radially inward portion and the outer insert chamfered at a radially outward portion. The inner insert and the outer insert can be mirror symmetric to one another. The inner insert and the outer insert are mounted to the drill body such that an effective cutting length of the inner insert equals an effective cutting length of the outer insert, the effective cutting lengths being measured in a direction perpendicular to the central axis.

Abstract: A rotating tool includes a plurality of elongated members, a cutting edge extending from at least one of the elongated members. A support is attached to each of the elongated members for holding the elongated members at a distance relative to an axis of rotation of the tool. A guiding pad extends radially outwardly from the axis relative to at least one of the elongated members. The tool is particularly useful for reaming operations in which it can be useful to have a tool with a large diameter and/or length.

Abstract: An adjustable hole cutter for cutting a hole with a predetermined diameter in sheet or panel material includes a blade holder that moves along a track or slot to alter a diameter of the cut hole; a blade arc adjuster coupled to the blade holder; and one or more replaceable blade segments coupled to the blade holder.

Abstract: An adjustable drill having a drill body having a longitudinal axis, and a face surface including an aperture extending into the drill body. A directional feature adjacent the aperture extends toward an edge of the drill body, and a longitudinal gullet extends from the face surface along at least a portion of the drill body. A cartridge adjacent the face surface is selectively slidable along the directional feature, and a cutting face having an insert pocket positioned adjacent the edge of the drill body in which an insert is releasably affixed.

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: A modular back reamer to be used in subterranean drilling includes a drive stem connected to a drill string and configured to support a reamer body, the reamer body providing a plurality of receptacles, wherein the receptacles are configured to retain a cutting leg assembly at varying heights within a predetermined range, and a plurality of shims engaged within the receptacles to secure the cutting leg assemblies at a specified height within the predetermined range, wherein the cutting leg assembly is secured to the reamer body with at least one mechanical fastener.

Abstract: The present invention concerns a boring-out tool comprising a main tool body having an interface for a drive, and a cutting insert holder which can be fastened to the main tool body and has a seat for a cutting insert, wherein the cutting insert holder can be moved in the radial direction relative to the main tool body between two positions. To provide a boring-out tool of the kind set forth in the opening part of this specification, which can be easily adapted to different boring diameters so that only few different boring-out tools have to be stocked to be able to cover all usual boring diameters, it is proposed in accordance with the invention that there is provided an extension arm which on the one hand is fastened to the main tool body and which on the other hand carries the cutting insert holder, wherein the cutting insert holder can be fastened to the extension arm at least two positions which are spaced from each other in the radial direction.

Abstract: A rotating tool includes a tool body, an outer cartridge, an inner cartridge and one or more setting plates. The tool body includes a pocket for the inner cartridge and a pocket for the outer cartridge. The outer cartridge has at least one cutting insert and a bolt through-hole extending toward a peripheral portion of the tool body. The outer cartridge is mounted on the pocket for the outer cartridge by means of a bolt. The setting plate is positioned to contact both the outer cartridge and the pocket for the outer cartridge. Screw holes for mounting the setting plate are formed on a side face of the outer cartridge adjacent to a rotating axis and through-holes are formed on the setting plate. This is so that the setting plate can be mounted on the side face of the outer cartridge by setting screws.

Abstract: A micro-adjustable differential screw assembly for providing fine adjustment of the axial and/or radial position of a cutting insert is disclosed. The micro-adjustable differential screw assembly can be mounted directly to a boring bar or to a mounting cartridge, which in turn, can be mounted to the boring bar. An axial micro-adjustable differential screw assembly provides fine adjustment of an axial position of the cutting insert, while a radial micro-adjustable differential screw assembly provides fine adjustment of a radial position of the cutting insert. The differential screw assembly includes a rotatable drive screw with threads of different thread pitches, and a non-rotatable adjusting screw with threads for mating with the drive screw.

Abstract: Deburring tool for deburring holes with a dual cutting knife assembly and a rotary-driven tool holder, in which, in a knife recess in the rotary-driven tool holder, the opposing cutting knives' cutting edges point radially outward by means of a rocker swivel located inside the tool holder that is mounted and flexibly prestressed in an axial direction around an axial longitudinal axis, pressed outward by pins frontally located on the rocker swivel, by which the pins correspondingly engage in a groove in the cutting element, characterized by the fact that the rocker swivel is placed against the force of a spring that simultaneously acts as a torsion spring, and located in the knife housing of the deburring tool and can be raised and lowered.

Abstract: A modular back reamer to be used in subterranean drilling includes a drive stem, a reamer body having a plurality of receptacles, wherein the receptacles are configured to retain a cutting leg assembly, and a plurality of shims engaged within the receptacles to secure the cutting leg assemblies at a specified height.

Abstract: A rotating chip removing tool, such as a drilling and chamfering tool, and a milling cutter, each of which have at least one cutting insert or cutting plate. The cutting plate has a guide recess that adjoins the underside of the cutting plate. A plate seat for accommodating the cutting plate is provided on a tool body of the chip removing tool and has a guide fillet or surface which corresponds to the guide recess.

Abstract: A longer life, low cost tool and tool holder enabling change of posture with respect to a spindle, having a high machining accuracy of a workpiece, and resistant to generation of vibration or heat, provided with a working tool for processing a workpiece, a motor having an output shaft to which the working tool is connected and rotating the working tool, a first holder for holding the working tool and the motor, a mount attached to the spindle, a generator to which rotational force is transmitted from the spindle through the mount and generating electric power for driving the motor, a second holder for holding the mount rotatably, holding the generator, and engaged with a nonrotating portion of the machine tool, and a posture adjustment mechanism which connects the first holder and the second holder and is able to change the posture of the working tool with respect to the spindle.

Abstract: A chamfer cutter for machining a counter sink in a threaded hole of a work piece is composed of a housing and a tool rest. The housing has a tapering part at a bottom thereof and a chamber at a top thereof. A first channel is defined at an outer periphery of the housing. The tool rest is received in the chamber and has an annular slot defined at an upper portion thereof and a second channel longitudinally defined at an outer periphery. A first screw extends through a first threaded aperture in the housing. A tool blade is received in the first and second channels and fastened by second screws extending through second threaded apertures in the tool rest. A third screw extends through a third threaded aperture in an upper surface of the tool rest and in aligned with the second channel. A fourth screw extends through a fourth threaded aperture longitudinally defined through the tool rest. A blind hole is defined at a bottom surface of the tool rest and a resilient member is provided in the blind hole.

Abstract: A rough boring tool is composed of a boring rod having a tool hole which is provided with a base line and a plurality of reading scales. The rough boring tool is further composed of a boring tool engaged with the tool hole and provided with a plurality of measuring scales corresponding in location to the reading scales and forming an angle with the base line. The advancement quantity of the boring tool can be easily observed with the naked eye by converging the reading scales of the tool hole of the boring rod and the measuring scales of the boring tool.

Abstract: A rotary cutter for cutting holes of various sizes in ceiling tile in connection with the installation of light fixtures. The cutter includes an enclosure which functions as a jig for receiving and accurately positioning tile members prior to the cutting operation. The lower portion of this enclosure functions as a waste receptacle following the cutting operation. A drive shaft turns a pair of arms bearing two cutter knives for rotation within the structure thus cutting holes in the ceiling tile. The cutting blades are biased upwards for returning to a non-cutting position upon completion of the cutting operation. The cutting knives are radially adjustable along the arm on which they are mounted. A conventional electric drill is mounted to the other end of the drive shaft for imparting rotary motion to the blade arm.

Abstract: A floating reamer holder includes a tool holder coupled to a mounting shank which is receivable in the chuck of the turret of a machine tool. The coupling between the tool holder and shank includes both a fine adjustment which adjusts the float in order to prevent enlargement of the hole being reamed as well, as to reduce chatter and a coarse adjustment, which compensates for misalignment between the turret and axis of the reamer. The coarse adjustment is accomplished by attaching the mounting shank to an adaptor with a pair of threaded bolts, each of which pass through oversized holes through the base of the mounting shank and are threaded into threaded bores in the adaptor. Since the holes are oversized, the mounting shank is radially shiftable with respect to the adaptor to compensate for machine misalignment. Lubricating bores extend completely through the mounting shank and completely through the adaptor so that the float assembly can be lubricated without disassembling the floating reamer holder.

Abstract: A tool housing is secured to the head of an electric hand drill so that a tool head, which is secured in the drill chuck, extends into the housing. The housing is secured to one end each of a pair of spaced, parallel guide rods that extend slidably through the upper end of the frame of a working-clamping vise and which are secured at their opposite ends to an end bracket. Compression springs which surround the guide rods between the housing and the vise frame normally resist movement of the housing and the tool head toward the vise. In use, two jaws on the vise frame are moved into clamping engagement with a piece of bar stock to support the tool on the stock with the tool head and cutting bits therein disposed in spaced registry with the end of the work that is to be machined.

Abstract: A selective drill bit attachment for a standard portable electric drill is provided and includes a housing for carrying a plurality of different sized drill bits in which one of the drill bits can be selected and manually extended into an operable position so as to be used by a standard portable electric drill. In a modification a locking mechanism is utilized to hold the selective drill bit stationary to the housing.

Abstract: A milling and countersinking fixture for machining cylindrical openings includes a spindle head having a central opening formed therein and a tool holder disposed on the spindle head having an end surface and having a central opening formed therein defining an inner surface. A clamping mandrel is supported in the central opening formed in the spindle head and guided through the central opening formed in the tool holder. The tool holder has at least one recess formed therein having a given cross-sectional shape and is open only toward the end surface and toward the inner surface. At least one cutting body has a cross-sectional shape adapted to the given cross-sectional shape for insertion in the at least one recess.

Abstract: A rotary cutting tool including an elongated generally cylindrical holder having a recess into which is fitted a disposable cutting insert. The insert is held in place by a clamping member which bears against a surface of the insert and which is attached to the holder by a clamping screw. Radial adjustment of the insert can be effected by adjusting screws which have camming surfaces which bear against a corresponding camming surface of the insert. In axial cross section, the axis of each adjustment screw is parallel to the axis of the clamping screw and to a horizontal axis of the holder, and an axis of the insert is at an angle relative to a vertical axis of the holder.

Abstract: Drilling head characterized in that it is essentially constituted by a body (1) mounted on a support (2) which is provided with a securement shank, cylindrical or of modular type or the like, or with a shank adaptable directly to machines, or with a shank with attachment to the Morse cone or American cone, or else to a threaded TR shank, or the like, to which it is rigidly secured by an assembly screw (3), by indexing structure (4) in all positions of the body (1) relative to the support (2), and by an adjustable support and displacement assembly (5) of the cutting tool (6) in a direction perpendicular to the axis of the body (1).

Abstract: The invention relates to a short-hole drill and a cutting insert therefor, for drilling of metallic work pieces. The drill comprises a drill shank with two chip flutes formed therein and with two cutting insert sites and two mainly rectangular cutting inserts having mutually identical shaping. The cutting inserts are accommodated in the cutting insert sites and secured thereto by means of lock screws such that the broken non-active cutting edge abuts against a broken support surface in each cutting insert site while the active cutting edge projects axially forwards. The cutting insert which is arranged radially outermost is inclined such that it determines the size of the bore while the longitudinal axis of the other cutting insert is arranged parallel to the center line (CL) of the drill. The distance between the outermost parts of each cutting edge is longer than the shortest distance between the long side surfaces of the cutting insert.

Abstract: A boring tool has a radially adjustable tool bit holder mounted on a head part connectable to an adaptor. A threaded stud for the connection between the head part and the adaptor has a thread arranged in each half, the two threads having different pitches or leads. An adjusting tool for the boring tool has a seat which mates with the threaded stud for rotating the stud relative to the thread arranged on the head part. The tool is marked with a scale in accordance with the formulaS=SG2/SG1 (scale factor)in which SG1 is the lead of one thread G1 on the threaded stud and SG2 is the lead of the other thread G2 on the threaded stud.

Abstract: Drill apparatus, especially for drilling glass, with hydraulic and/or mechanically advancing, driven drill spindle, wherein the drill spindle is secured in a spindle carrier and is equipped at the end which is facing towards the workpiece with a drill, as well as being equipped with a countersink or the like drill which generally surrounds the drill, whereby the drill and the countersink drill are axially adjustable with respect to one another, in accordance with the preceding wear. The drill is connected in a drill carrier by way of adjustment threads. An automatic adjustment device is provided for the drill in the drill spindle, which adjustment device includes a mechanical, forward and reverse step motion device with a screw-type guide, and a hydraulic cylinder/piston actuating assembly for the step motion device. The hydraulic cylinder/piston actuating assembly can be supplied with hydraulic pressure medium through the drill spindle carrier and additional passages.

Abstract: An indexable insert drill is disclosed that avoids formation of a breakout slug and therefore is particularly suited for drilling a laminate workpiece or stacked workpieces. The tool includes a cylindrical body provided with opposed flutes. A radially inner indexable carbide insert is releasably secured in the back wall of one flute at the leading end of the body and a radially outer insert is similarly secured in the back wall of the opposed flute. The inserts present an active cutting edge generally disposed in a transverse plane containing the axis of the tool and in axially leading relation relative to the tool body, and together are adapted to cut a hole of given diameter with the active cutting edges providing for overlap therebetween.

Abstract: The present invention provides a drilling tool having a shank and at least one pair of identical cutting inserts, the inserts having an octagonal shape having alternate equal obtuse angles. Each of the inserts is arranged such that they each have a different radial displacement from the turning axis of the drill, the inner insert having a cutting path which overlaps the turning axis of the drill and the next outer insert having a cutting path which overlaps the cutting path of the inner insert. The cutting path of each insert is formed by the cutting edges either side of the obtuse angles of the insert.

Abstract: A milling tool for cutting internally of a bore by means of replaceable bits. The tool comprises an elongate bar member an end portion of which includes a pair of axially outer portions which extend radially outwardly from a central portion and are disposed on respectively opposite sides of the rotational axis. A pair of clamping members are detachably attached to the bar member on respectively opposite sides of the rotational axis and have axially outer portions which together with the axially outer portions of the bar member form an axially outer surface of the tool. The axially outer portions of the bar member and the clamping members cooperate to form four slots in the tool axially outer surface for clamping engagement of radially extending bits.

Abstract: An adjustable boring head tool holder including a boring bar and a bar holder where securement of the boring bar to the bar holder is accomplished with a slot and key combination and a cam clamp. To add rigidity to the tool holder, a hold down clamp may be used which has a foot that fits over a flange of the bar and pulls the flange against the housing of the bar holder.

Abstract: The invention relates to a boring tool for producing stepped bores. The boring tool comprises a shaft having at least one longitudinally extending dovetail groove which is adapted to receive one or more tool holders forming a trapezoidal prismatic block. Each tool holder has clamping means for adjustably fixing a tool holder in a dovetail groove and has a continuous bore extending between two parallel lateral surfaces thereof. A rod-like cutting plate holder fits displaceably into the bore and is adjustably locked by locking means in the tool holder. The cutting plate holder has clamping means adapted to hold a cutting plate. A radial distance of each of the cutting plates from the axis of the boring tool and the longitudinal positions of the cutting plates may be adjusted to the desired positions, so that a stepped bore can be formed in one drilling operation.

Abstract: To provide for self-centering of boring tools, particularly of larger diameter boring tools having replaceable rotatable cutter bits, the cutter bit closest to the central axis of the tool holder or tool shank, i.e. the radially innermost bit is formed with auxiliary cutting surfaces adjacent the corners of a square or parallelogram-shaped bit, for example by chamfering the corner, with a relief surface therebehind, and positioning the auxiliary cutting surface to intersect the central axis of the boring tool so that, in operation, a small conical tip will be left which is continuously reduced in size and cut; and wherein the cutter bits are positioned on the tool bodies to present cutting edges at the end face which overlap with respect to workpiece removal, so that each cutter bit will independently cut into the workpiece, at least the inner cutter bit being guided in its cutting circle by the radially outer corner fitting against the surface cut in the workpiece.

Abstract: A drill having at least two indexable radially spaced inserts arranged with axially projecting cutting points to machine overlapping concentric grooves, the outermost insert machining a groove having an outside diameter equal to the diameter of the hole and the innermost insert machining a groove overlapping the center of the hole, and radial components of the cutting thrust on said inserts being in opposition and balancing each other. The cutting thrust may be balanced by the number, shape and/or the rake of the cutting edges.

Abstract: A drill assembly has two inserts clamped in the respective radial recesses formed in the body. One insert has a straight edge and the other insert has a notched edge. The arrangement is such that the notched edge of the other insert is disposed slightly above the straight edge of one insert.

Abstract: A holder for a rotary metal cutter for use with a milling machine having a shouldered head portion, a cutter and a clamp member. The cutter is sandwiched between the clamp member and the shoulder of the head portion. Where it is desired that the cutter be adjustable on a horizontal plane, a variation of the holder is provided, which includes a clamp element cooperating with a clamp member to permit the required rotation and to assure a secure clamp on the cutter after adjustment. Variations of the holder are included for engaging two cutters set on opposite sides of the holder.

Abstract: A floating knife of a boring tool for machining the inner surfaces of cylinders, has a cutter member and a support element arranged on both sides of the floating knife. The support elements are arranged for cooperation with the respective cutter member. The support elements are arranged behind the cutter member as viewed in the feed advance direction. The support surface of the support element is spaced behind the cutter member in the floating direction of the floating knife by a spacing corresponding to the extent of the allowable yielding of the cutter member in the radial direction, whereby the cutter member is able to machine the inner surface of a cylinder even if the latter has cross-apertures in its wall because the support member limits the radial floating of the knife to a safe extent.

Abstract: In a boring tool for making borings in solid metal material of workpieces, at least one cutting bit is interchangeably arranged in a recess, at the end of the borer shank. The polygonal cutting bit has a plurality of cutting edges of equal length, of which two are in engagement with the workpiece at each time. For the purposes of improved centering of the borer, these two operative cutting edges each form approximately the same angle to a line parallel to the borer axis. A plurality of cutting bits at different radial distances may also be arranged in the boring tool, with two cutting edges of each cutting bit being in engagement with the workpiece and the working regions of the cutting edges of adjacent cutting bits each overlapping somewhat.

Abstract: An adjustable boring tool including an axial shank and a socket for mounting a cylindrical boring bar with an offset axis clamped in adjustable position through transverse and longitudinally slotted segments on one side of the socket together with a transverse screw for clamping the slotted segments against the boring bar. A graduated dial fixed to the boring bar provides calibrated adjustment over a range equal to four times the offset.

Abstract: An indexable insert drill employing a plurality of inserts located substantially in a single radial plane characterized by a round innermost insert having its arcuate cutting edge extending across the axial center line of the drill. One or more supplemental inserts, preferably square in configuration and including chip interruption notches positioned for positive axial lead, continue the cutting action radially beyond the arcuate center cut of the round insert with an outermost corner adapted to finish cut the side wall diameter of the hole.

Abstract: A hole-forming tool comprising a body adapted for being driven in rotation and including a front portion having an axial bore. A plurality of cutting plates are removably secured to the front face of the front portion of the body for cutting a ring of material from a metal workpiece while leaving a non-cut core in the axial bore. The body carries an ejector in the bore for ejecting the core at the end of the cutting operation. The ejector can be a slidable member which is resiliently urged into the bore and which opposes the core to effect displacement thereof from the workpiece when the tool has completely cut through the workpiece. A system is also provided for axially distributing a lubricating liquid through the bore to the cutting plates.

Abstract: A floating reamer whose cutting head is axially secured to the shank but movable transversely to the parallel axes of the shank and the cutting head toward and away from a position of coincidence of the axes. Pairs of slidably engaged respective guide faces on one axial end of the shank and on the head are parallel and substantially perpendicular to the axes respectively. Two cutting blades project from the cutting head in opposite radial directions and are normally fixed to the head.

Abstract: A holder for use with a screw cutting diehead of a machine tool, the holder having a recess for the reception of a thread chaser element, which recess has a surface arranged to locate the chaser element therein at a predetermined helix angle, and the holder being adapted to permit the element to be gripped in position therein. The invention also includes the combination of a chaser carrier and separate chaser holder mounted therein.

Abstract: A drilling tool, particularly for working metals, in which a tool holder is provided at its frontal or end surface with a receiving slot which is open on three sides and in which an interchangeable blade type drill bit is fastened. A bar-shaped adapter is symmetrically inserted into the receiving slot between the drill bit and the bottom surface of the slot. The adapter extends laterally beyond the periphery of the tool holder with one end surface abutting the bottom surface of the slot and the opposite end surface contacting and providing an abutment for at least the portions of the blade shaped drill bit which extend laterally beyond the periphery of the tool holder.

Abstract: A cutting tool, especially for cutting grooves, which has a shank at one end and a head at the other end with a diametral axial slot extending into the tool from the head end. A pair of overlapping plates having means on the outer ends for supporting cutting elements are fitted into the slot and abut respective shoulders at the axially inner end of the slot. A clamp screw draws the head tight against the plates while other screws threaded angularly into the head engage the plates and hold the plates in engagement with the respective shoulders.

Abstract: An improved boring head assembly that is designed for being easily and accurately adjusted to different standard sizes of boring diameters so that it can be accomplished by persons without having a great deal of skill; the device consisting of a spindle for insertion into a chuck of a machine, and an adaptor adjustably mountable on the end of the spindle so to be axially offset a particular amount which is accomplished by means of specifically dimensioned blocks interchangeably placed therebetween, the adaptor serving to hold a boring bar which on its end retains a flying cutter.

Abstract: A drill having inner and outer indexable cutting inserts for forming a hole in a workpiece. The inner insert is positioned at a non-negative radial angle and is set out axially ahead of the outer insert to increase the service life of the inserts. Tungsten carbide wear strips are spaced angularly around the drill body to limit radial movement of the body and to prevent the body from wearing.

Abstract: An improvement in a boring bar assembly is disclosed. The improvement relates to a lateral bar assembly in combination with the adjustable boring bar assembly of U.S. Pat. No. 2,838,316 issued to Albert Thomas, a co-inventor of the present invention. The improvement includes a lateral bar to which a major portion of the shank member of the boring bar assembly is removably fixed. The lateral bar has a plurality of longitudinally spaced threaded receptacles into which an end of the shank may be screwed. The shank may be selectively screwed into the lateral bar to thereby change the diameter of the boring bar assembly. The lateral bar may be varied in overall length with the number of receptacles likewise varied to thus vary the magnitude of the ranges of diameters of operation of the boring bar assembly.

Abstract: A center cutting indexable insert end mill which can be used for axial plunging in solid material or side cutting. The center cutting insert having corner radii is positioned with the axial center line of the tool shank intersecting the inner corner radius. A single square insert with side clearance angle having the cutting face located in a radial plane provides alternate active cutting edges for axial and/or radial feed; alternatively a second diametrically oppositely located identical insert located radially outward of the center cutting insert performs side and outermost axial cutting functions.