Tool Adapter Patents (Class 408/239A)
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Patent number: 5161921Abstract: The invention relates to a method and equipment designed to drill countersunk holes on surfaces of unknown positions in which a presser fitted to the tool support is placed against the surface to be drilled, and can move axially in relation to the tool; the presser is used as a limit switch to control tool return.Type: GrantFiled: February 24, 1989Date of Patent: November 10, 1992Assignee: JOBS S.p.A.Inventor: Armando Corsi
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Patent number: 5129118Abstract: An improved drill accessory apparatus primarily adapted for selective connection to a power tool such as an electric drill to provide additional functions for such a power tool such as a screwdriving function. The apparatus thereby enables a user to first drill a hole and then drive a screw into that drilled hole with the same tool and without requiring removal of a drill bit first used to drill the hole. More significantly, the present apparatus provides the aforementioned accessory feature while overcoming certain safety disadvantages present in the most relevant prior art. One such safety-directed improvement of the present apparatus is derived from a structural design which uses a spring positioned entirely within a housing thereby precluding safety risks that might otherwise be encountered if an external spring were employed such as that shown in the prior art.Type: GrantFiled: July 29, 1991Date of Patent: July 14, 1992Inventor: Mark W. Walmesley
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Patent number: 5110145Abstract: A power tool adaptor for converting a screw gun to a power drill. The adaptor comprises a torque transmitting sleeve mounted for relative rotation within a grip sleeve. Safety and speed of attachment and detachment are thereby provided.Type: GrantFiled: June 24, 1991Date of Patent: May 5, 1992Inventor: Patrick A. Stewart
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Patent number: 5096347Abstract: An actuation member (B) supported by a housing (A) is actuated for clamping upwardly by means of a spring force and actuated downwardly for unclamping by means of an actuation means (D). A piston (11) is inserted into a cylinder (10) fixedly secured to the upper portion of the housing (A), and a liquid sealing chamber (12) is formed below the piston (11). The piston (11) is fixedly secured to the actuation member (B). When the actuation member (B) is held in the clamped condition, a liquid sealing valve (15) is closed so as to seal an oil (L) within the liquid sealing chamber (12). Whereby, in case that a pulling down force larger than the clamping spring force is imposed to the actuation member (B), a pressure generated within the liquid sealing chamber (12) serves to prevent the piston (11) from lowering, against the pulling down force.Type: GrantFiled: April 2, 1991Date of Patent: March 17, 1992Assignees: Mori Seiko Co., Ltd., Kabushiki Kaisha KosmekInventors: Fujio Kumagai, Keitaro Yonezawa
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Patent number: 5080536Abstract: A boring bar sleeve for mounting a boring bar upon a socketed tool holder of a machine tool is formed of an elongated tube having an outside diameter corresponding to the diameter of the tool holder socket for securing the sleeve within the socket. The tube has a forward end portion, which extends forwardly out of the socket, and within which different elongated tubular bushings may be inserted. The bushings all have the same outside diameter which corresponds to the sleeve inner diameter for interchanging one bushing with another within the sleeve. But, each bushing has a different inner diameter which is of a preselected size that corresponds to a preselected diameter boring bar. The bushings each have a longitudinally elongated slot formed through their walls. A series of longitudinally aligned, spaced apart set screws extend through threaded openings formed in the forward end portion of the tube and through the bushing slot to engage a boring bar inserted within the bushing.Type: GrantFiled: August 13, 1990Date of Patent: January 14, 1992Inventor: Edward A. Andrews
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Patent number: 5074025Abstract: A combination drill and drill adapter comprises a drill having a shank portion for mounting the drill, and an adapter having an opening for receiving the drill. The drill shank is generally cylindrical in shape and, at a portion adjacent to an end of the drill, includes a plurality of substantially flat sides parallel to the longitudinal axis of the drill extending along at least a portion of the shank. The drill adapter opening has a depth greater than the length of the flat sides of the drill for receiving the drill shank end portion. A mounting member is at the opposite end for mounting the adapter in a drilling device.Type: GrantFiled: March 5, 1991Date of Patent: December 24, 1991Assignee: Jarvis Cutting Tools, Inc.Inventor: Marcus C. Willard, III
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Patent number: 5067861Abstract: A tool holder including a drive unit having a peripheral flange about the outer end thereof, and interchangeable chuck units with similarly configured flanges for selective engagement against and releasably mounting to the drive unit flange by screw fasteners. Each chuck unit includes a self-contained fluid pressure system comprising a recess inward through the outer end thereof defined by a flexible peripheral wall with a sealed cavity therebehind. The cavity is filled with a fluid which, upon being pressurized, produces a corresponding inward flexing of the recess wall for the gripping of a tool bit.Type: GrantFiled: October 16, 1990Date of Patent: November 26, 1991Inventor: Jan Danielsen
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Patent number: 5064322Abstract: Tool holder connection arrangement for modular tools holder devices of a tool machine for connecting a first hollow element, provided with an internal threading and having a cylindrical axial seat, to a second hollow element provided with a shank insertable in the cylindrical axial seat of the first element. The connection arrangement includes a shaft having threading engageable with the internal threading of the first hollow element, the shaft defines a seat for receiving a clamping wrench. A tongue arrangement is provided for torsionally blocking the second element relative to the first element. A crown of balls arrangement is provided for axially blocking the second element with respect to the shaft. The shaft includes a circumferential groove and the shank includes a circumferential groove for receiving the crown of balls arrangement.Type: GrantFiled: November 30, 1989Date of Patent: November 12, 1991Inventor: Gianluigi Pisani
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Patent number: 5054974Abstract: The tool holder, which serves principally for receiving a thread cutting tool, has a length compensation under tension and compression. This purpose is served by two compression springs which comprise massive elements of foamed, open and closed cell polyurethane elastomer. This material has good spring and damping properties. The compression springs operate without fatigue. The tool holder also has a coupling which permits radial movements of the thread cutting tool transverse to the axis of rotation in order to compensate for alignment errors.Type: GrantFiled: August 30, 1989Date of Patent: October 8, 1991Inventor: Adolf Wellach
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Patent number: 5054344Abstract: A clamping assembly for releasably holding a tool holder having a shank includes a tool support member having a bore extending along a longitudinal axis. A locking mechanism is disposed in the axial bore for securing the tool holder to the support member. The locking mechanism includes a lock rod having first and second contact surfaces mounted in the support member. The lock rod moves along the longitudinal axis between a locked position and a release position. A wedge rod is mounted in the support member for reciprocal movement along an axis angularly disposed with respect to the longitudinal axis. The wedge rod has first and second wedge surfaces which incline in parallel fashion from opposite edges of the wedge rod. First and second force transmitting elements are interposed between the wedge surfaces of the wedge body and the contact surfaces of the lock rod.Type: GrantFiled: February 1, 1990Date of Patent: October 8, 1991Assignee: Kennametal Inc.Inventors: Robert A. Erickson, Ted R. Massa
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Patent number: 5032043Abstract: A tool holder and spindle adapter includes a quick change section for securing into a power spindle, a body having an axial bore mounting a positive drive and a collet holder shank to receive a tool holder collet and tool, with the tool extending into operative engagement with the positive drive. A rotatable tool adjuster is mounted within the body upon a transverse axis and includes an eccentric cam device engageable with the positive drive for controlling longitudinal in and out adjustments of the tool.Type: GrantFiled: June 28, 1990Date of Patent: July 16, 1991Assignee: T. M. Smith Tool International CorporationInventor: H. D. Hollifield
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Patent number: 5026223Abstract: A device for locking a tool to a cutting machine. During a locking action a drawbar is rotated to bring a radial lock pin into registry with oppositely directed bayonet slots formed in a tool that has been inserted into a pocket in the end face of a tool holder; a spring acts on the drawbar to move the lock pin into the bayonet slots. The lock pin is carried on a nose element that is threaded onto the drawbar for drawing the lock pin toward the drawbar to achieve an axial lock force between the tool and the tool holder. Tapered frusto-conical surfaces on the tool and holder produce a self-centering tapered sticking lock action. The oppositely directed bayonet slots allow the tool to be forceably dislodged from the sticking taper when the drawbar is rotated in a reverse direction.Type: GrantFiled: December 20, 1990Date of Patent: June 25, 1991Assignee: GTE Valenite CorporationInventor: Carl E. Hunt
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Patent number: 5026224Abstract: A tool component adapted to be connected to another element of a tool assembly includes a rearwardly facing surface and a truncated conical recess extending rearwardly therefrom. The recess is adapted to receive a correspondingly configured projection of the other element. A portion of the rearwardly facing surface defines a support surface engageable with the other element. The recess is non-circular in cross-section so as to be rendered non-rotatable relative to the other element. The recess includes a rearwardly open hole extending along the axis and a threaded fastening bolt disposed in the hole to draw the projection into the recess.Type: GrantFiled: February 9, 1990Date of Patent: June 25, 1991Assignee: Sandvik AktiebolagInventors: Ken G. E. Andersson, Sven E. O. Engstrand, Lars G. Asberg
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Patent number: 5015129Abstract: Commercially available battery-powered screwdriver output shafts are round and have hexagonal bores to receive the hexagonal shanks of screwdriver blades. An adapter has one end shaped to receive and engage such an output shaft. The opposite end is externally threaded to receive an internally threaded chuck which holds round shank twist drills. Thus, a power screwdriver may be used as a drill. An optional second adapter having one end shaped hexagonal to receive the screwdriver output shaft and be held in place by a set screw and has its opposite end shaped to be permanently attached to the first-mentioned adapter. This facilitates attaching and detaching the chuck.Type: GrantFiled: August 23, 1990Date of Patent: May 14, 1991Inventor: Stephen D. Albin
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Patent number: 4995768Abstract: A rapid change drill holder assembly consisting of a chuck-engaging adaptor holder for selective fixed engagement with a power tool chuck and a tool holder adaptor for selective operative engagement with the chuck-engaging adaptor holder so as to permit selective changing of tools fixedly mounted in the tool holder adaptor without the necessity of removing the chuck-engaging adaptor holder from the power tool chuck each time a tool change is required.Type: GrantFiled: July 31, 1989Date of Patent: February 26, 1991Inventor: Ralph Craft
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Patent number: 4976575Abstract: The invention relates to a tool holding system for automatic tool changing in a machine tool, stamping machine or other such machine, wherein the machine has a spindle which has at its free end a gripping means in the form of a sleeve for a tool which can be inserted and removed by a tool changing system, while a draw rod actuating the sleeve by axial displacement is guided in the spindle, and the tool having at the spindle end a tool holding head with an inverted centering frustum cone which can be engaged by a conical inner surface of the sleeve in its clamping position in order to clamp the tool against the spindle.Type: GrantFiled: April 12, 1988Date of Patent: December 11, 1990Assignee: AXA-Entwicklungs- und Maschinenbau- gesellschaft fur produktionstechnisch e anlagen und Gerate mbHInventors: Heinrich Kappelhof, Gottfried Wolf
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Patent number: 4958966Abstract: A tubular bushing receives the shank of an elongated tool, such as a boring bar, drill and the like shank tools, for mounting the tool shank within the elongated tool socket bore of a tool holder or turret of a machine tool. A narrow slot formed in the tube wall extends substantially the full length of the bushing parallel to the tube axis. A considerably narrower slit formed in the tube wall extends from each of the opposite ends of the tube to the adjacent ends of the slots. A narrow, flat band extends along the interior of the tube wall, parallel to the tube axis and radially offset relative to the slot. Thus, set screws mounted in the tool socket defining wall and extending transversely of the socket engage either the flat band, to resiliently compress the bushing around the tool shank, or extend through the slot to directly engage the shank, for securing the tool and bushing within the socket.Type: GrantFiled: December 4, 1989Date of Patent: September 25, 1990Inventor: Edward A. Andrews
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Patent number: 4944641Abstract: A clutch engager sleeve which is capable of engaging a screw gun is disclosed. The engager sleeve is able to be secured to the screw gun, preferably by means of a threaded lock down collar. Preferably, the clutch engager is secured to the screw gun via a shank, with which it is provided. The clutch engager contacts a drill chuck by screwing the drill chuck to, preferably, its thread, and then driving a screwhead of a reverse lock down screw to secure the chuck from its front directly to the clutch engager. This arrangement prevents the chuck head from coming off in the reverse mode. The clutch engager effectively provides the necessary pressure in both forward and reverse modes.Type: GrantFiled: August 2, 1989Date of Patent: July 31, 1990Inventor: Andre Alves
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Patent number: 4934883Abstract: The invention relates to a tool components and a method of assembling tool components. One tool component comprises a central recess and a fastener. The recess is non-circular in cross-section. Another tool component has a central projection and a central threaded bore in its axially rear end. The projection is non-circular in cross-section.Type: GrantFiled: November 9, 1988Date of Patent: June 19, 1990Assignee: Sandvik AktiebolagInventors: Ken G. E. Andersson, Sven E. O. Engstrand, Lars G. sberg
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Patent number: 4929131Abstract: A cutting tool for a lineal milling machine has a female tapered surface for close tolerance matching to the outer, male tapered surface on the outside of the spindle which mounts the cutting tool to provide the maximum width of support for the cutting edge. The cutting edges comprise a plurality of carbide inserts, each with its own flute formed in the body of the tool, such that as the cutting tool is rotated at high speed an annulus of cutting surface is created which is ideally suited for use with the following method. A new method for lineal machining includes the steps of advancing the cutting tool into the workpiece to form a substantially arcuate edge, retracting the cutting tool from the workpiece, indexing the cutting tool to an overlapping position, and then advancing the cutting tool into the workpiece to remove the amount of overlap, with those steps being repeated to mill pocket openings or for any other lineal milling application.Type: GrantFiled: March 24, 1989Date of Patent: May 29, 1990Assignee: Westhoff Toll and Die CompanyInventor: James D. Allemann
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Patent number: 4923344Abstract: To permit easy coupling and uncoupling of a concrete or rock circular boring or milling tool element (14, 17), two coupling parts (1, 2) are provided, a first coupling part (1) being formed with a recess (7) of non-circular cross-sectional shape, for example of approximate four-leaf clover shape, extending inwardly from an end face (11) of the first part; the second part (2) has a projection (20) of non-circular cross-sectional shape, matching the cross-sectional shape of the recess, and fitting therein, while being axially separable therefrom. The engagement surfaces (a, 22) of the respective first and second parts extend axially of the coupling elements. A retaining nut (3) retains the parts against each other.Type: GrantFiled: December 5, 1988Date of Patent: May 8, 1990Assignee: Hydrostress AGInventor: Hans Bieri
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Patent number: 4886402Abstract: Device for mounting of attachments, toolholders and tools with cone and face application, especially for machining and turning centers with automatic or manual changers of tools with tapered shank, in particular with 7/24th taper, comprising a cone (1) for introduction in the spindle, a front part (2) centered in an aperture in the cone (1) and provided with a flange for application against the face of the spindle and a gripping knob (3) for assembly of cone (1) and front part (2). The gripping knob is connected to an intermediate non-deformable connecting device having structure to allow adjustment of the length thereof. The connecting device is connected to the front part thereby to secure the front part to the cone.Type: GrantFiled: July 25, 1988Date of Patent: December 12, 1989Assignee: Emile Pfalzgraf "EPB", S.A.Inventor: Emile Pfalzgraf
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Patent number: 4879930Abstract: A rotationally symmetrical tool assembly includes a first component constituted by a tool holder; a second component constituted by a tool head and being removably attached to the first component such that engagement faces of the first and second components are in a contacting relationship with one another and are oriented perpendicularly to the rotary axis of the tool assembly. A fitting bore is provided in one of the components and a guide bore is provided in the other of the components. A securing pin projects from the fitting bore and extends into the guide bore for determining and maintaining a desired angular position of the second component relative to the first component.Type: GrantFiled: June 15, 1988Date of Patent: November 14, 1989Assignee: Fried. Krupp Gesellschaft mit beschrankter HaftungInventor: Rainer Von Haas
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Patent number: 4874181Abstract: A coupling member includes a rectangular socket disposed at one end thereof and engaged snugly with the rectangular end of the rotatable rod of a pneumatic tool body, an externally threaded portion disposed at the other end of the coupling member and engaged with the large threaded hole of a drilling head, and a small threaded hole formed in the end surface of the externally threaded portion. When a bolt is passed through the fastener hole of the drilling head to engage with the small threaded hole of the coupling member, the drilling head is secured to the pneumatic tool body. When the assembly of the drilling head and the coupling member is removed from the pneumatic tool body, the rectangular socket of a rotating head can be engaged with the rectangular end of the rotatable rod of the pneumatic tool body, thereby forming a pneumatic wrench.Type: GrantFiled: August 31, 1988Date of Patent: October 17, 1989Inventor: Shing-Wang Hsu
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Patent number: 4850765Abstract: A self-locking tool and socket body combination includes a tool holder with a male section which may be received in a socket in the socket body. Tool grippers of a tool loading device grip onto an annular V-groove on the tool holder and also act on an actuator. The actuator is linked to a first and second wedge surface which are moved laterally inwardly against the urging of spring means. When the tool grippers are released, the spring means urge the first and second wedge surfaces laterally outwardly into engagement with first and second wedge follower surfaces in the socket body and this automatically locks the tool holder axially within the socket body without any other manual or automatic means required to lock the tool holder within the socket.Type: GrantFiled: December 17, 1987Date of Patent: July 25, 1989Assignee: Kennametal Inc.Inventor: Valdas S. Ramunas
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Patent number: 4850759Abstract: The present invention relates to a tool for metal cutting, said tool in working position preferably rotating around its longitudinal center axis, and that the tool comprises a cutting body (10;10a;10b;10c) and a shaft (12;12a;12b;12c), that supports the cutting body (10;10a;10b;10c).The aim of the invention is to solve the problem to design milling, drilling and turning tools of small dimensions having exchangeable cutting edges.The present invention is characterized in that the cutting body of the tool is designed as a uniform body comprising integrated cutting edges. By means of a locking screw (11; 11a;11b;11c) the cutting body (10;10a;10b;10c) is detachably fixed in the shaft (12;12a;12b;12c).Type: GrantFiled: June 9, 1988Date of Patent: July 25, 1989Assignee: Seco Tools ABInventors: Bengt N. G. Strand, Sven L. Eklund
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Patent number: 4850758Abstract: This is an improved method for quickly changing and holding drill bits in electric drills. It includes hexagonal-ended drill bits and a holder with safety device for the bits. The holder is a steel sleeve with a male hexagonal end for insertion into 1/4" and larger drills. The opposite end is a female hex to receive the hex-ended drill bits. The holder is magnetized to hold the bits. The holder also supports a spring loaded two-piece safety split sleeve device surrounding the holder. The drill bit end of the split sleeve is folded over a fit into a circular groove in the drill bit and is held firmly in the groove by spring tension. This device keeps the bit in the holder when removing the bit from the material being worked. The split sleeves pivot at their attachment point to the holder, thus permitting rapid changing of drill bits (and other hex accessories) by simply squeezing the chuck end of the split sleeves causing them to pivot, thus opening the opposite end so that bits can be inserted and removed.Type: GrantFiled: November 15, 1988Date of Patent: July 25, 1989Inventor: William W. Morgan
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Patent number: 4840520Abstract: The present invention relates to mounting device having a conical spindle, especially with a 7/24ths cone, with conical and butt contact for attachments, tool holders and tools characterized in that it is essentially constituted by a cone (1) introducible into the spindle (2), by a forward part (3) centered in the cone (1) and provided with the collar (4) for application against the face of the spindle (2), by a pull rod (5) for assembling the cone (1) and the forward part (3), by a resilient assembly (6) for pressing the cone (1) into the spindle (3) in locking position, mounted in compression between the cone (1) and the forward part (3), and by structure (7) for adjusting said pressing assembly (6).Type: GrantFiled: May 19, 1988Date of Patent: June 20, 1989Inventor: Emile Pfalzgraf
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Patent number: 4834594Abstract: A chuck to be power driven for rotating drill bits in the mining and construction fields. The chuck is designed to drive one or more telescoped drill steels which carry a mining bit and is designed to drive drill steels with square drive ends, large hexagonal drive ends, small hexagonal drive ends and large and small hexagonal ends as well as roof bolt units without modification.Type: GrantFiled: April 6, 1987Date of Patent: May 30, 1989Assignee: Fansteel Inc.Inventor: Richard E. Morgan
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Patent number: 4834597Abstract: The invention relates to a tool assembly and a method of assembling the tool. The assembly comprises a machine spindle component and a tool component for chip removal. The spindle component comprises a central clamp and a central recess. The tool component has a central projection and a central threaded bore in its axially rear end. The seat and the projection comprise complementary, non-circular surfaces which are brought against each other during tightening of the clamp. The tightening of the clamp is terminated by the mutual abutment of a front surface of the spindle and an end surface of the tool. The cooperating non-circular surfaces receive moment forces arising during the use of the tool.Type: GrantFiled: April 14, 1988Date of Patent: May 30, 1989Assignee: Sandvik AktiebolagInventors: Ken G. E. Andersson, Sven E. O. Engstrand, Lars G. sberg
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Patent number: 4834596Abstract: A quick change spindle adaptor for a power driven spindle having an axial bore and a tool holder having a shank axially projected into the spindle. A sleeve is secured upon the spindle and an outer shell is rotatably mounted upon the sleeve and retained thereon and includes a nut. A conical recess within the inner bore surface at the forward end of the spindle defines an axial bearing and receives a centering cone on the tool holder for maintaining an axial self alignment of the tool holder and spindle. Spaced threaded segments upon the tool holder are threadedly engaged by the nut for axially anchoring the tool holder upon the spindle and for biasing the centering cone into engagement with the spindle bearing.Type: GrantFiled: November 23, 1987Date of Patent: May 30, 1989Assignee: T.M. Smith Tool International CorporationInventors: Dean H. Hollifield, Frank R. Schultz, III
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Patent number: 4826364Abstract: A one-piece rotary drill or end milling cutter is an extruded product made of sintered hard metal. The front end portion of its shank has one or more cutting edges and its rear end portion tapers in a direction away from the front end portion and is receivable with friction in a complementary conical socket of a rotary holder. The shank has one or more longitudinally extending coolant holes with a circular or triangular cross-sectional outline, and such hole or holes are formed in the course of the extruding step. The periperhal surface of the shank has one or more longitudinally extending chip evacuating grooves, and those portions of the grooves which are formed in the rear end portion of the shank contain fillers of bondable plastic material or solder.Type: GrantFiled: August 27, 1987Date of Patent: May 2, 1989Assignee: Stellram S.A.Inventor: Manfred Grunsky
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Patent number: 4810139Abstract: An over-spindle quick-change assembly for releasably securing a tool holding adapter at an operative position with respect to a power rotatable shank spindle comprises a cylindrical sleeve sleeved over the tool holding end of the spindle. A collar rotatable on the sleeve has a threaded portion engageable with a nut on the adapter for screwing the nut and adapter to the operative position, whereat confronting annular surfaces of the nut and spindle end engage each other in sealing relationship. The sleeve is prevented from relative movement on the spindle by a set screw screwed radially into the spindle shank and having a reduced diameter extension confined within a radial hole in the sleeve. The threaded portion of the set screw is dimensioned to prevent its entry into the radial sleeve hole.Type: GrantFiled: August 31, 1987Date of Patent: March 7, 1989Assignee: NO-MA Engineering IncorporatedInventor: Donald J. Regan
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Patent number: 4784536Abstract: 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).Type: GrantFiled: April 17, 1985Date of Patent: November 15, 1988Inventor: Emile Pfalzgraf
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Patent number: 4780031Abstract: A ratchet die stock comprised of a main body from which there protrude two parallel portions each possessing a hollow, and where such hollows accommodate a ratchet and pawl to provide unidirectional travel of the dies which are assembled in the head of the main body, and accommodate a telescopic handle, with one of such portions being tangentially positioned with respect to the head.Type: GrantFiled: April 10, 1987Date of Patent: October 25, 1988Assignee: Super-Ego Tools, S.A.Inventor: Manuel A. Ollacarizqueta
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Patent number: 4777715Abstract: A simple, strong and fast acting tool retention subsystem is intended for both original equipment and retrofit applications in machining centers with automatic tool changer systems. A machining center incorporating the invention is described. The invention is compatible with ANSI standards for spindles, tapered tool shanks and knobs, and is configured to eliminate the tool chatter and tool shank taper unseating and release commonly occurring in conventional spring actuated tool retention subsystems when spiral fluted cutters are used. The tool shank is positively jam locked by a rotary bolt actuator means that generates a very high value of axial pre-load tension, comparable to that which was furnished by the very successful historic manual draw-in bolt retention subsystem used in milling machines. A bi-directional free wheeling impact motor drives the rotary bolt actuator means between open and closed positions of a maximally strong collet.Type: GrantFiled: October 31, 1986Date of Patent: October 18, 1988Inventor: William C. Roberts
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Patent number: 4764064Abstract: A tool changer formed by a power assisted draw bar to obtain and lock, as well as release and expel, standard tapered tool holders used with machine tools. Two components, a collet cylinder and a flared stem, together comprise the locking mechanism and protrude through the unmodified spindle cylinder of a commercially available machine tool. The powered actuator assembly, which can separately translate these components, is mounted on top of the machine tool's power head.Type: GrantFiled: September 25, 1987Date of Patent: August 16, 1988Assignee: Komo Machine IncorporatedInventor: Lyle C. Grienke
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Patent number: 4759115Abstract: A numerically controlled automatic tool changing machining center is provided with a rotary driven spindle concentric within which is a spindle bar that may be reciprocated out from or into the spindle by a hydraulic cylinder. Located at the forward end of the spindle bar is a tool receiving socket which is operative to releasably engage the shank of a single toolholder or multiple spindle toolhead transferred to the spindle bar from the machine tool storage magazine by a tool transfer arm. When a large, single toolholder is engaged by the spindle bar, the spindle bar is retracted into the spindle to urge the large single toolholder against the nose of the spindle.Type: GrantFiled: September 9, 1985Date of Patent: July 26, 1988Assignee: Kearney & Trecker CorporationInventor: Ervin J. Kielma
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Patent number: 4750750Abstract: A socket drive adapter comprised of a shank on one end adapted to be received by a drill chuck and a square socket driver on its other end. The driver includes a ball detent that, by maneuvering a spring biased trigger mechanism, will releaseably secure a socket over the driver and prevent axial movement therebetween. Provision is also made to apply torque to the adapter by means of a hand held wrench.Type: GrantFiled: March 20, 1987Date of Patent: June 14, 1988Inventor: Jarrold Batalorf, Jr.
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Patent number: 4745673Abstract: A spindle head unit having a bell crank lever (24) mounted pivotally on a spindle head (10) of a machining center to depress a drawbar (18) inserted through a spindle (14) mounted on the spindle head (10). One of arms of the bell crank lever (24) is located so as to be capable of being engaged with a guide cam (28) and a depressing end (24a) in the shape of a spherical protrusion which is not connected mechanically to an upper end (18a) of the drawbar (18) is formed in a free end of the other arm of the bell crank lever (24). The bell crank lever (24) is urged continuously by a spring means (32) so that the former arm is urged toward the guide cam (28).Type: GrantFiled: August 12, 1987Date of Patent: May 24, 1988Assignee: Fanuc Ltd.Inventors: Hiroshi Araki, Toshiyuki Aso, Yoshihisa Akiyama
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Patent number: 4744706Abstract: A device for use in a lathe or similar rotary machine is constructed to receive the projecting nose portion of a collet, and to be pulled into firm contact with the face of the machine spindle so as to create an extremely rigid interconnection.Type: GrantFiled: February 17, 1987Date of Patent: May 17, 1988Inventor: Ernest H. Marshall
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Patent number: 4734000Abstract: A power operated wrench for acuating the drawbars on machine tools, such as vertical spindle milling machines, which permits the operator to move a single handle, and after release of a safety interlock move a pneumatic wrench into position to engage the drawbar nut and either tighten or loosen the drawbar depending on the direction of motion of the operator handle. The mechanical operation permits the operator to rotate the operator handle in the same direction as would be done if the drawbar was being manually tightened or loosened, in order to tighten or loosen the drawbar under power. The safety interlock prevents movement of the power motor into engagement with the drawbar until the machine has been shut off.Type: GrantFiled: March 9, 1987Date of Patent: March 29, 1988Assignee: Kurt Manufacturing Company, Inc.Inventor: John O. Lenz
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Patent number: 4722645Abstract: A power driven rotatable spindle is provided with a conical recess tapering inwardly from one end of the spindle to receive a mating conical shaft of a tool holding adapter at a coaxial operative position whereat the spindle and adapter are splined for rotation as a unit. The adapter is moved axially to and from the operative position by interengageable screw threaded portions of the adapter and collar, which latter is rotatable but not axially movable on the spindle.Type: GrantFiled: November 28, 1986Date of Patent: February 2, 1988Assignee: NO-MA Engineering IncorporatedInventor: Donald J. Regan
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Patent number: 4701084Abstract: The present invention relates to a method for attaching a shell-type milling cutter wherein an area for fastening the shell-type milling cutter to its cutter arbor is increased to raise rigidity and attachment strength thereby making high-speed and heavy-duty cutting possible, so that the cutting efficiency thereof becomes substantially identical to that of an integral structure type milling cutter, besides exchange of the milling cutter can very simply be attained.The method for attaching a shell-type milling cutter according to the present invention is conducted by such a manner that the inside diameter portion of a shell-type milling cutter is formed into a tapered hole, and a bush is forcibly inserted in a gap defined between the tapered hole and a fitting shaft of a cutter arbor, whereby the milling cutter is fixed to the cutter arbor.Type: GrantFiled: August 13, 1986Date of Patent: October 20, 1987Assignee: Kabushiki Kaisha AideieInventor: Manabu Ide
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Patent number: 4692073Abstract: Handle adapter and chuck apparatus for a power bit includes a quick release chuck having a spindle with a longitudinally extending bore in the spindle adapted to receive the shank of the power bit. A radially extending bore extends through the spindle and communicates with the bore. A ball is disposed in the bore and contacts a portion of the shank of the power bit disposed in the bore. A spring biased sleeve is disposed about the spindle and includes a tapered bore which bears against the ball to bias the ball against the shank of the tool.Type: GrantFiled: July 1, 1986Date of Patent: September 8, 1987Inventor: J. Richard Martindell
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Patent number: 4657454Abstract: In a chuck comprising a holding cylinder having a tapered outer circumferential surface and an objective tool or an adapter for holding such a tool inserted therein, and a clamping cylinder rotatably mounted at a predetermined distance from the outer circumferential surface of the holding cylinder, a number of needle rollers being arranged in a plurality of stages along the entire circumference of a gap between the two cylinders to extend along a direction at a predetermined inclined angle .alpha. with respect to the common axis of the cylinders, and the needle rollers rotating and revolving upon rotation of the clamping cylinder, thereby contracting and recoverying the holding cylinder, slits are formed in the holding cylinder to allow elasticity of the holding cylinder and to improve oil throwing performance and clamping force of the holding cylinder. The slits will not interfere with smooth rotation of the needle rollers.Type: GrantFiled: December 18, 1985Date of Patent: April 14, 1987Assignee: Kuroda Precision Industries, Ltd.Inventors: Shuiti Migita, Hajime Ito
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Patent number: 4655655Abstract: A tool and workpiece arrangement for material-removing machining includes a primary holder and a replaceable secondary holder which is mounted on the primary holder, and which carries a tool or a workpiece. The primary holder is provided at its end face, which cooperates with the secondary holder, with portions which extend crosswise with respect to one another around an unprofiled central region at mutually displaced sides so as to be parallel at respective mutually opposite sides, and which have respective flanks. The corresponding end face of the replaceable secondary holder is contoured in a corresponding or complementary manner.Type: GrantFiled: September 12, 1985Date of Patent: April 7, 1987Assignee: Gildemeister DeVlieg System Werkzeuge GmbHInventor: Horst Schurfeld
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Patent number: 4647052Abstract: A tool support, or an extension or reduction part holding a tool support, is held by its shank in an axial bore of a socket of the tool-holding device. The socket has one or more further bores, the longitudinal axes of which each form an angle of from 0.degree. to about 5.degree. with a straight line perpendicular to the longitudinal axis of the socket. A setscrew disposed in one such further bore cooperates by means of a beveled or faceted surface at its lower end with a chucking surface running on the outside of the shank at an angle to the longitudinal axis thereof. Another setscrew may cooperate with a second such chucking surface forming an angle of about 45.degree. with the first chucking surface.Type: GrantFiled: September 25, 1984Date of Patent: March 3, 1987Assignee: Eugen FabelInventor: Willy Butikofer
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Patent number: 4643621Abstract: A quick-change system for power feed and positive feed drill motors having quick-change capabilities whereby a nosepiece may be separated from the drill motor employing a quick-release coupling that does not utilize threaded means. The quick-change system utilizes a quick-change nosepiece, chuck and shank adapter means such that the oil line to a fluid inducer remains attached during nosepiece removal.Type: GrantFiled: March 21, 1983Date of Patent: February 17, 1987Assignee: The Boeing CompanyInventors: Robert L. Fuller, Jr., Dwayne E. Proff
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Patent number: RE34256Abstract: A cutter adapted to be rotated about a front-to-rear extending longitudinal axis comprises a front portion having a cutting edge, and a rear portion for mounting a cutter. The rear portion has a conical outer periphery, the shortest radius of which is defined by a rearmost end of the rear portion. The rear portion includes a hook-shaped projection formed by a laterally open recess in the outer periphery.Type: GrantFiled: September 17, 1991Date of Patent: May 18, 1993Assignee: Seco Tools ABInventors: Bengt N. G. Strand, Sven L. Eklund