With Separate Means To Fasten Tool Seat To Holder Patents (Class 407/101)
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Patent number: 5163788Abstract: A rotary slotting tool that includes a circular tool body having a V-shaped groove in its peripheral edge to establish a centering plane for individual cutter element holders. A pocket is formed in the leading face of each holder for mounting an individual cutter element. The pocket structure configuration is varied between successive holders so that successive cutter elements overhang different side faces of the associated holders. A common cutter element configuration is used for all of the cutter elements.Type: GrantFiled: January 10, 1991Date of Patent: November 17, 1992Assignee: GTE Valenite CorporationInventors: Gary Dahl, Lawrence J. Plutschuck
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Patent number: 5159863Abstract: This invention relates to an adjustable face grooving tool holder adaptable for holding a cutting insert for cutting circular face grooves having widely differing diameters in the end face of a workpiece without interchanging tool parts.Type: GrantFiled: April 30, 1991Date of Patent: November 3, 1992Assignee: Manchester Tool CompanyInventor: Vandell E. Simpson, III
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Patent number: 5139371Abstract: A clamp for circular cutting tools (2) has a bearing bore (6) at the clamp head (5) in order to support a cup-shaped insert (7). The receptacle (9) of the cup-shaped insert (7) is elastically deformable and has a recess configured as a truncated hollow cone and the centering profile (3) of the circular cutting tool (2) is configured as a truncated cone. The convergin cone angle of the recess in receptacle (9) is smaller than the cone angle of the centering profile (3). Several cuts (10) separate the receptacle (9) in spring segments (11). The bottom (12) of the recess has a larger diameter than the contact surface (13) of the circular cutting tool (2). It is provided with a circular groove (14) running along its periphery.Type: GrantFiled: February 1, 1991Date of Patent: August 18, 1992Assignee: Feldmuehle AktiengesellschaftInventors: Harald Kraft, Otto Eder
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Patent number: 5112163Abstract: A variable tool bit holder which takes the place of up to eight standard tool bit holders for machining a workpiece including a shank member having a generally elongated rectangular configuration, and a groove positioned on an end portion of the shank member and comprises an end groove portion extending across an end surface of the shank member and side groove portions extending horizontally on the left and right side surfaces of the shank member toward the opposing end surface for a distance at least equal to the end surface groove portion; a support blade having top and bottom surfaces each defined by a frontally disposed V-shaped bit-receiving forward edge portion and a rearwardly disposed planer top surface disposed above the plane of the bit-receiving surface; a transversely projecting elongated rib extending longitudinally along the inner side of the support blade and adapted to be inserted in a selected groove portion and releasably secured thereto; an insert bit having opposing cutting tips and a V-shType: GrantFiled: September 20, 1991Date of Patent: May 12, 1992Inventor: Thomas Veilleux
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Patent number: 5098233Abstract: A carbide shank boring bar having a coolant/lubricant bore running axially therethrough fitted with a steel head, said head being machinable to produce a pocket to receive a metal cutter insert wherein said boring bar shank and said steel head have a diameter less than one-half inch and said head is brazed without flux to said boring bar and no flux residue remains in said coolant/lubricant bore upon completion of said brazing. The method of achieving the fusion includes using an atmospheric vacuum chamber to conduct the fusion.Type: GrantFiled: October 29, 1990Date of Patent: March 24, 1992Assignee: Circle Machine CompanyInventors: Harvey L. Patterson, Reginald Quintana
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Patent number: 5004378Abstract: The present invention concerns to a clamped cutting tool used in the metalworking field. The clamped cutting tool includes a tool-holder, a shim member placed on the tool-holder, a cutting insert placed on the shim member, and a locking pin held in engagement with the tool-holder for clamping the cutting insert. The tool-holder includes a forward end portion having an insert receving recess formed therein, the recess having a bottom wall and at least one side wall extending upwardly from the bottom wall, the bottom wall including a pin-receiving hole of a circular cross-section formed therein so as to extend downwardly. The shim member has a bore of a circular cross-section formed therethrough, the shim member being disposed on the bottom wall of the recess in such a manner that the bore communicates with and is concentric to the hole of the tool-holder.Type: GrantFiled: May 18, 1989Date of Patent: April 2, 1991Assignee: Mitsubishi Metal CorporationInventors: Tatsuo Arai, Katsumi Haga
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Patent number: 4981057Abstract: A tool head is clamped in a tool holder by rotating a radial or axial clamping shaft which has spiral camming surfaces urging clamping elements outwardly to engage ramps on the pin of the tool head which is received in a socket of the tool holder. The spiral cam can be a second or higher order mathematical curve and the shaft can carry an ejection cam as well.Type: GrantFiled: October 19, 1989Date of Patent: January 1, 1991Assignee: Krupp Widia GmbHInventors: Rainer von Haas, Gunter Ruther
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Patent number: 4964763Abstract: For machining operations employing cutter heads, use is made of wear-resistant cutting materials, and the cutter heads are operated at constantly increasing cutting speeds and, for coarse machining operations, with high cutting forces. This requires on the one hand a highly reliable mounting of the individual cutter blades or cutter blade carriers, respectively, and on the other hand the possibility of axially and radially adjusting the cutter elements in the micrometer range for the compensation of wear.The invention provides a cutter head provided with cutter blade carriers (8) having an axial guide stem (9) and a cutter blade mounting portion (10), the guide stem (9) being received in an eccentric bushing (17) acting as a radial adjustment bushing, and coupled therewith for axial adjustment. The eccentric bushing (17) is retained in the main body (2) of the cutter head (1) at an axially fixed position for rotation in the circumferential direction.Type: GrantFiled: January 18, 1989Date of Patent: October 23, 1990Assignee: Entwicklungszentrum fur Zerspanungstechnik GmbH & Co. KGInventor: Walter Kieninger
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Patent number: 4951536Abstract: The present invention entails a tool holder adapted to be inserted within the tool slot of a lathe turret. The tool holder includes a detachable cutting unit and a clamping unit. Forming a part of the clamping unit is a pair of wedge blocks disposed within wedge cavities formed within the clamping unit. The wedge blocks are movable via screws from an inner relaxed or disengaged position to an outer position where the wedge blocks engage the tool slot and through a wedging action function to secure the tool holder within the tool slot of the lathe turret.Type: GrantFiled: September 7, 1988Date of Patent: August 28, 1990Assignee: Kennametal Inc.Inventor: Robert J. Robertson
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Patent number: 4938641Abstract: A parting tool is provided having a tool shank and an interchangeable blade support connected thereto. The blade support is equipped with a blade attachment of blade. The blade support makes contact along one side thereof with a broad-side of the tool shank. The blade support has narrow sides which are guided, at least on sections, by two guide surfaces of the tool shank typically disposed on flanges. Flat contact surfaces on said flanges perpendicularly disposed in relation to the broad side of the tool shank butt against two corresponding counter guide surfaces on said blade support and are pressed against each other by clamping means such as longitudinally off-set screws. In comparison with earlier parting tools used for the same applications, the parting tools of the invention can be made smaller in overall height and provide extremely stable connection between the blade support and the tool shank, thereby greatly reducing rattling and vibrations during normal cutting operations.Type: GrantFiled: July 18, 1988Date of Patent: July 3, 1990Assignee: Schwarzkopf Development CorporationInventor: Johann Maier
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Patent number: 4932295Abstract: The present invention relates to an automatic clamping unit of the type having a spring loaded lock rod that is movable between an unlocked and locked position. A pair of locking balls are confined about the locking rod and are operative to move outwardly for engagement with the shank of a tool holder in response to the locking rod moving from the unlocked position to the locked position. The lock rod of the present invention includes a variable sloped ramp for engagement with each locking ball. As each locking ball moves along the variable sloped locking ramp, the mechanical advantage applied to the locking balls through the ramp varies due to the variation in slope. Each locking ramp is particularly configured such that the resultant locking load exerted by the locking balls against the shank of the tool holder is relatively constant although the position of the locking rod and the force being applied to the locking rod varies.Type: GrantFiled: August 30, 1988Date of Patent: June 12, 1990Assignee: Kennametal Inc.Inventor: Robert A. Erickson
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Patent number: 4893967Abstract: A cutting-tool cartridge arrangement for rotary cutting tools in which the cutting-tool cartridge assembly is mountable in an aperture in the cutting-tool body member. The cartridge assembly has an annular split bushing for insertion into the tool body aperture, has internal threads and a slot in the wall to provide a pair of opposed surfaces resiliently movable towards and away from each other. A set screw aperture is provided in the tool body member. The stud seat is threaded into the split bushing. The stud seat has a cutting insert end having matching walls that match the wall configuration of the mounting walls of a frustum cutting insert. A clamping nut threadingly engages the stud seat threaded walls at the cutting insert end thereof and has internal walls configured to match the cutting inserts flank surface. Tightening the clamping nut on the stud seat clamps the frustum cutting insert therebetween.Type: GrantFiled: February 22, 1989Date of Patent: January 16, 1990Inventor: Leonard A. Briese
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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: 4850255Abstract: The body (2) of the tool-holder (1) is equipped with spherical caps (14, 15, 16) which come to rest against the flat inside faces (6, 7, 8) of a trirectangular trihedron in the tool-mounting base. Flanges (17, 18) guide conical-tipped retaining pins (21, 22) in apertures (20, 21). These tips fit into conical recesses (23, 24). The rod (13) of a jack mounted on the base spreads the pins apart, and while entering the recesses, the pins exert on the tool-holder a force capable of immobilizing it and acting along a predetermined line of action.Type: GrantFiled: February 26, 1988Date of Patent: July 25, 1989Assignee: Tornos-Bechler SA, Fabrique de Machines MoutierInventors: Francois Pruvot, Xavier Esteve
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Patent number: 4836068Abstract: A lock rod is provided extending along and reciprocally movable along an axis Y-Y and having a cylindrical cross section near one end. Two circumferentially spaced depressions are located in the cylindrical surface for receiving locking elements in an unlocked position. Extending from the first depression is a ramp inclined with respect to axis Y-Y and from the second depression is a groove parallel to axis Y-Y for driving locking elements radially outwardly to abut against a toolholder shank to lock it onto a tool support member.Type: GrantFiled: October 1, 1987Date of Patent: June 6, 1989Assignees: Kennametal Inc., Krupp Widia GmbHInventor: Robert A. Erickson
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Patent number: 4828436Abstract: A cutting-tool cartridge arrangement for rotary cutting-tools in which the cutting-tool cartridge assembly is mountable in a aperture provided in the body member of the cutting-tool. The cutting-tool cartridge assembly has a split bushing for insertion into the aperture in the body member of the tool and the bushing is annular in shape, has internal threads and has a slot in the wall thereof extending from the threaded inside surface to the outside surface to provide a pair of opposed surfaces resiliently movable towards and away from each other. A set screw aperture is provided in the body member of the tool into which a set screw may be inserted and tightened against the split bushing. The stud seat having external threads is threaded into the split bushing and the stud seat also has a cutting insert end having matching walls that match the wall configuration of the mounting walls of a frustum cutting insert.Type: GrantFiled: September 29, 1987Date of Patent: May 9, 1989Inventor: Leonard A. Briese
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Patent number: 4797039Abstract: Adjustable cutting tool bit support, usable as in a stump cutter body, including adjustable jack for variable registration depth of cutting bit, a differential screw engaging differential threads in the body and jack for adjusting the jack position, a wedge clamp for locking engagement of the body and tool bit in adjusted position and a differential screw engaging differential threads in the respective wedge clamp and jack for positively moving said wedge clamp into an effective clamping engagement.Type: GrantFiled: September 23, 1987Date of Patent: January 10, 1989Assignee: GTE Valenite CorporationInventor: Ronald P. Bosek
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Patent number: 4736659Abstract: In the present invention a tubular toolholder shank is releasably held in the bore of a tool support member by a releasable locking mechanism mounted in the bore of the tool support member and receivable in the tubular toolholder shank. The locking mechanism has an actuating member radially extending through the wall of the tubular shank.Type: GrantFiled: January 27, 1987Date of Patent: April 12, 1988Assignees: Kennametal Inc., Krupp Widia GmbHInventor: Robert A. Erickson
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Patent number: 4726269Abstract: The invention relates to a toolholder assembly. The toolholder has a tubular shank at one end for mounting into the bore of a support member. The shank has at least two circumferentially spaced perforations in its tubular wall. Each of the bores extends obliquely toward the rear of the shank as it extends from the outer to the inner surface of the tubular wall. A locking element is located partially within each of said perforations an the recess formed by the inner surface of the tubular shank. An actuating mechanism is located within the recess to drive the locking elements outwardly against the perforation walls, thereby expanding the rear of the tubular shank to lock the shank in the support member bore.Type: GrantFiled: January 27, 1987Date of Patent: February 23, 1988Assignee: Kennametal Inc.Inventor: Robert A. Erickson
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Patent number: 4723877Abstract: The invention relates to a toolholder for holding a tool at one end and having a tubular shank at its other end for mounting it into the bore of a support member. The shank has at least two circumferentially spaced perforations in its tubular wall. Each of the perforations extends obliquely toward the front of the shank as it extends from the inner to the outer surface of the tubular wall.A locking element is located partially within each of said perforations and the recess formed by the inner surface of the tubular shank. An actuating mechanism is located within the recess to drive the locking elements outwardly against the walls, thereby expanding the rear of the tubular shank to lock the shank in the support member bore.Type: GrantFiled: January 27, 1987Date of Patent: February 9, 1988Assignee: Kennametal Inc.Inventor: Robert A. Erickson
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Patent number: 4721422Abstract: A two piece boring bar, one piece of which provides a recessed free end to which a cutting bar extension member is attached. When a cutting element as a separated component is used it may be removably secured upon the free end of the boring bar extension by a clamp that in turn provides a conically shaped socket which receives the similarly shaped head of a connecting member, threadable into the end portion of the boring bar extension, outside the boundaries of the recess formed therein. The clamp is also provided with a bendable depending stud projectable into an aperture formed outside the recess in parallel relation to the threaded connection of the clamp fastener, for locating and maintaining the clamp in position prior to its clamping engagement with the cutting element.Type: GrantFiled: August 22, 1986Date of Patent: January 26, 1988Inventor: Ignatius Konwal
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Patent number: 4715753Abstract: A coupling for connecting a tool head and a tool holder. The tool head is inserted with an at least partially conical receiving pin into a correspondingly configured receiving bore in the tool holder. Tool head and tool holder are actuated by clamping elements so that a contact collar on the tool head rests against the counterface of the tool holder. The clamping device is composed of a clamping slide which is movable in the longitudinal direction of the tool holder. In the front part of the clamping slide, movable clamping jaws are provided which cooperate with a pin fixedly disposed in the tool holder in such a manner that movement of the clamping slide initiated during insertion of the receiving pin into the receiving bore causes the clamping jaws to be pushed onto the pin and to thus grip behind an annular groove in the blind bore of the tool head, thus causing the tool head to be locked to the tool holder.Type: GrantFiled: January 23, 1987Date of Patent: December 29, 1987Assignee: Fried. Krupp Gesellschaft mit beschrankter HaftungInventor: Hans Tack
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Patent number: 4708040Abstract: A lock rod is provided extending along and reciprocally movable along an axis Y--Y and having a cylindrical cross section near one end. Two circumferentially spaced depressions are located in the cylindrical surface for receiving locking elements in an unlocked position. Extending from the first depression is a ramp inclined with respect to axis Y--Y and from the second depression is a groove parallel to axis Y--Y for driving locking elements radially outwardly to abut against a toolholder shank to lock it onto a tool support member.Type: GrantFiled: January 27, 1987Date of Patent: November 24, 1987Assignees: Kennametal Inc., Krupp Widia GmbHInventor: Robert A. Erickson
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Patent number: 4695208Abstract: A tool holder which is convertible to perform a variety of machining operations such as threading, turning and grooving comprises a support bar formed with a cavity which receives a mounting block having a seat adapted to support an insert so that the top surface of the insert is exposed and its cutting edge extends outwardly from the seat. The insert is clamped within the seat by a clamping block, which is secured atop the insert by a machine screw. The top edge of the clamping block is formed with a beveled bearing surface which engages the head of the machine screw so that forces are applied to the clamping block upon tightening of the screw which urge the insert downwardly, rearwardly and inwardly against the walls of the mounting block seat.Type: GrantFiled: November 14, 1985Date of Patent: September 22, 1987Inventor: Gerald K. Yankoff
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Patent number: 4662254Abstract: Quick change cutting tool block clamp wherein planar mounting faces of adapter base and tool holder faces are located and retained in compressive engagement through linear interengagement of transverse semi-dovetail key surfaces under pressure established by a spaced pivoted clamping dog mechanism spanning the engagement faces. Clamping retention is entirely accomplished by means immediately adjacent the interface of the planar surfaces leaving the outer surfaces of the tool holder open and free of clamp actuating projections.Type: GrantFiled: December 9, 1985Date of Patent: May 5, 1987Assignee: GTE Valeron CorporationInventors: Kenneth G. Noggle, Lee Reiterman
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Patent number: 4631993Abstract: The machine tool parts and method of making same includes providing cooperating attachment means between the shank and the tool bit head assembly, wherein a predetermined portion of the attachment means on the shank is located a first predetermined distance from a fixed reference on the shank and the cutting edge of the tool bit head assembly is located a fixed predetermined distance from a portion of the attachment means on the tool bit head assembly, corresponding to the predetermined portion of the shank attachment means, with the additive sum of the first and fixed predetermined distances defining a predetermined cutting height of the cutting edge. Preferably, the attachment means comprise a key formed on the head assembly and a correspondingly proportioned key-way formed on the shank. The fixed reference on the shank is its bottom surface and the predetermined positions on the attachment means are the lowermost abutting edges of the key and key-way.Type: GrantFiled: May 22, 1981Date of Patent: December 30, 1986Assignee: General Electric CompanyInventor: Walter H. Kelm
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Patent number: 4616965Abstract: An indexable shell cutter having an improved cartridge for mounting a cutter insert on the cutting face of the shell cutter body. The cutter body has a plurality of recesses extending rearwardly from the cutting face, each of said recesses being formed by a first surface, a second surface spaced from the first surface, and a base surface extending between the first and second surfaces. The second surface is essentially perpendicular to the plane of the cutting face of the cutter head and is V-shaped in cross-section. A cartridge is removably secured in each of the recesses with the base of the cartridge being in mating engagement with the second surface of the recess.Type: GrantFiled: February 27, 1984Date of Patent: October 14, 1986Assignee: Manufacturers Tool Service, Inc.Inventors: Russell W. Anderson, Michael J. Held
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Patent number: 4530263Abstract: A holder for lathe tools having an elongated sleeve for receiving a tool shank and a plurality of shims for fixing the height of the shank in the sleeve. At least a portion of one wall of the sleeve is made of a ferromagnetic material. The holder also includes a clamping head, for clamping the sleeve onto a lathe support, that has a wall that slidably engages the sleeve wall. This clamping head wall has a magnet mounted flush within its surface for engagement with the ferromagnetic portion of the sleeve wall so as to ensure contact between the wall of the sleeve and the clamping head wall. Also disclosed is a holder spreading device for use with the holder.Type: GrantFiled: November 9, 1983Date of Patent: July 23, 1985Inventor: Bruno Muntel
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Patent number: 4422812Abstract: A rotatable shell cutter has a cylindrical member which advances to cut into a pipe. A plurality of cutting elements are arranged in a circle at one end of the cylinder. Each cutting assembly comprises a cartridge fixed as one piece to the cylindrical member, such as by brazing or the like, a seat positioned thereon through dowel pins, a cutting insert mounted on the seat through a cooperating V-shaped projection and recess, and a clamp engaging, positioning and securing the cutting element against the seat and also secured to the cartridge for urging all of the cutting assembly elements together.Type: GrantFiled: November 25, 1981Date of Patent: December 27, 1983Inventor: Kevin D. Linville
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Patent number: 4393735Abstract: A cutting plate carrier insertable in a holder of a machine tool, in particular a lathe tool. The carrier has a plane base surface and a substantially circular plan, the axis of which coincides with the axis of a central screw thread. The cutting plate carrier is provided with a recess for a polygonal cutting plate having a central bore. The cutting plate can be fixed in the recess by means of a clamping screw which can be screwed into the central screw thread. For the cutting plate, the recess has a plane supporting surface arranged parallel to the base surface and a number of bearing surfaces corresponding to the number of lateral surfaces of the cutting plate and extending parallel thereto. These bearing surfaces are arranged at the same distance (a) from the central screw thread. A second screw thread for screwing in a retaining screw inserted into the holder from below is provided parallel to the central screw thread.Type: GrantFiled: November 14, 1980Date of Patent: July 19, 1983Assignee: Komet Stahlhalter- und Werkzeugfabrik Robert Breuning GmbHInventors: Otto Eckle, Helmut Veigel
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Patent number: 4337980Abstract: A wedge arrangement for affixing a tool mounting means onto a base member in such manner that substantially no wear occurs between the mounting means and base member. The mounting means has a tapered portion which is wedgingly received within a correspondingly tapered cavity provided in the base member, and that part of the base member which defines the tapered cavity completely surrounds that part of the tapered portion which is seated therein. The mounting means is also provided with a perforation or socket to receive the shank or body portion of a cutting element which has a relatively sharp cutting point or edge provided thereon.Type: GrantFiled: April 8, 1980Date of Patent: July 6, 1982Assignee: The Cincinnati Mine Machinery CompanyInventor: Claude B. Krekeler
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Patent number: 4332513Abstract: A face grooving tool is disclosed for machining circular grooves in a metal workpiece. More particularly, a face grooving tool includes an elongated shank having an arcuate support blade projecting axially outwardly from one end thereof. The leading surface of the support blade includes an offset V-groove configuration, with the vertex thereof being located nearer to the radially inner surface of the support blade than the radially outer surface. By this arrangement, the radially outermost portion of a cutting insert, which is receivable in the offset groove, is provided with added support during a cutting operation. The arcuate configuration of the support blade enables the blade to be received in the circular groove being machined in the workpiece thereby providing continuous support for the insert.Type: GrantFiled: July 24, 1980Date of Patent: June 1, 1982Assignee: General Electric CompanyInventor: Thomas W. Gowanlock
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Patent number: 4315706Abstract: For use with an indexable metal cutting tool, an improved holder assembly is disclosed which functions to maintain the position of an indexable insert during operation of the tool. More particularly, a holder assembly is described which includes a support member, connected to the cutter body of the tool, which includes a platform and a threaded aperture disposed normal to the plane of the platform. The latter includes a plurality of keys extending from the plane of the platform. A planar indexable insert having an aperture disposed normal to the planar surfaces thereof is disposed in abutting relationship with the platform of the support member, such that the apertures therein are in register. In addition, the planar surface of the indexable insert which is in abutting relationship with the platform includes receiving grooves which are adapted to be interengaged with the keys of the support member.Type: GrantFiled: April 7, 1980Date of Patent: February 16, 1982Assignee: General Electric CompanyInventor: Donald S. Erkfritz
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Patent number: 4288184Abstract: The shaft (1) of the drilling tool has a support (3) fixed in a cylindrical blind hole (2) by means of a fixing screw (10). The support has a rear cylindrical portion (3a) and a forward half-cylindrical portion (3b). The forward portion has a replaceable cutting insert (4) fixed in it by means of a clamping screw (8). This is screwed into a first thread (9) of the support, and this thread extends perpendicularly to the seating (5) provided for the replaceable cutting insert. The support has a second thread (9) running parallel to the first thread and this locates the fixing screw which is screwed into the support from below passing through an oblong hole (11) in the shaft. The base (2a) of the blind hole is provided with an adjusting screw (12) which is arranged so as to be displaced from its axil.Type: GrantFiled: January 24, 1980Date of Patent: September 8, 1981Assignee: Komet Stahlhalter- und Werkzeugfabrik Robert Breuning GmbHInventor: Helmut Veigel
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Patent number: 4270422Abstract: A tool element (10) provided with a cutting insert (11) is readily attachable to and detachable from an elongated holder body (12), which is secured to a machining tool. The tool element (10) is clamped against the holder body (12) by means of a bar (19) which is longitudinally movable in the holder body. In order to prevent the cutting forces from causing a relative movement between the tool element (10) and the holder body (12) projections (23, 24) on the tool element (10) are forced against opposed abutting surfaces (16, 17) on the holder body (12) by means of complementary cam surfaces on an enlarged portion (21) on the bar and on the projections (23, 24) upon a clamping movement of the bar (19).Type: GrantFiled: September 19, 1979Date of Patent: June 2, 1981Assignee: Sandvik AktiebolagInventor: Ken G. E. Andersson
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Patent number: 4247231Abstract: A tool holder for grooving and parting machining operations and the like having a cutting insert received on a support plate carried by a tool body. Recesses in the bottom and rear edges of the support plate bear on support pins pressed into the body and the support plate is retained in engagement with the pins and a side face of the body by a screw extending through a hole in the plate and threaded into the body. A clamp carried by the body bears on the cutting insert to retain the insert in a seat on the plate.Type: GrantFiled: January 8, 1979Date of Patent: January 27, 1981Assignee: Fansteel Inc.Inventor: Rolf H. Kraemer
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Patent number: 4235564Abstract: An arrangement for holding a cutting tool is detachably fastened to a receiving member on the left or right side or turned 180.degree.. The arrangement includes a support and a clamp for firmly mounting at least one exchangeable cutting tip; for this purpose, in one embodiment, the support has a longitudinal groove and the clamp has a longitudinal serrated edge which extends into said groove.In order to hold the cutting tip even more exactly in place, the clamp has a serrated edge which engages in a shape-mating connection in a slot arranged on the rear face of the cutting tip.These tools are used especially as recessing tools on lathes.Type: GrantFiled: December 29, 1978Date of Patent: November 25, 1980Assignee: Utilis Mullheim AGInventor: Jean P. Huser
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Patent number: 4227838Abstract: The invention relates to a cutting tool especially useful for cut-off, threading and grooving operations. The tool includes a massive block-like body with serrations along one or both sides. An adjustable plate with interengaging complemental serrations is mounted on the side of the body and retained by bolts which transfix the plate and anchor in the body. The plate has a top recess to receive short cutting elements backed up by a similarly shaped rod. A broached out-of-round hole is cut into the body parallel to the serrated wall to receive at one end a threaded anchor nut and at the other end a shank of a clamp bar.Type: GrantFiled: January 8, 1979Date of Patent: October 14, 1980Assignee: Fansteel Inc.Inventor: Robert W. Berry
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Patent number: 4226560Abstract: A toolholder comprising a body having a segmental shaped recess at one end in which is secured a correspondingly shaped carrier or insert anvil provided with a tool bit accommodating pocket in which an indexable tool bit is adapted to be received, the carrier having a cylindrical depending portion received in a corresponding circular recess in the toolholder to positively locate the carrier when clamped in the recess with a headed screw or top clamp.Type: GrantFiled: December 26, 1978Date of Patent: October 7, 1980Assignee: Fansteel Inc.Inventor: Rolf H. Kraemer
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Patent number: 4202650Abstract: A toolholder is disclosed consisting of a body having a recess extending inwardly from the periphery. The recess is formed having an inwardly extending front and back wall, defining a bottom wall therebetween. A shim is disposed in the recess with the back side abutting the back wall of the recess and being supported thereby, the shim having a protuberance on its front side for engaging a center hole of an insert. A pin member is imbedded in the bottom wall of a recess and located adjacent to, or in the region of, the front wall and means is provided for clamping the insert between the shim and bottom wall of the recess and the pin.Type: GrantFiled: October 13, 1978Date of Patent: May 13, 1980Assignee: Kennametal Inc.Inventor: Robert A. Erickson
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Patent number: 4202651Abstract: A lathe tool holder has a straight supporting arm and a clamping outer end formed by slotting the outer end in a horizontal central plane to define clamping jaws having opposed dovetail portions which when urged together by a clamping screw grip a resilient tool bit adapter having sides compressible by the jaws to grip a tool bit. Different tool bit adapters are used having socket-like bit-receiving openings which are either parallel to the plane of the slot in the holder or inclined with respect thereto, depending upon the type of work or direction of cut. A drilled hole extends vertically entirely through both jaws, and is tapped to form threads therein which lie on a nominally continuous helix, to receive the clamping screw. The clamping screw is threaded at its end remote from the head for a length which does not exceed the thickness of a single jaw.Type: GrantFiled: October 30, 1978Date of Patent: May 13, 1980Inventor: William A. St. Jean
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Patent number: 4201500Abstract: A disc-shaped cutter body (1; 101; 201) is provided with a multiplicity of tooth plates (4; 104; 204, 204a), which engage suitable backing and end-supporting surfaces (5, 6, 7; 105, 106, 107, 205, 205a, 206, 206a, 207, 207a) of tooth holders (3; 103; 203) inserted in recesses formed by radial grooves (2; 102; 202) in the cutter body. Each tooth plate is clamped between a tooth holder and a head portion (9; 109; 209a, 209b) of an elongated holding-back member (8; 108; 208), which has a foot portion (10; 110; 210) that is disposed in the recess of the cutter body and bears on said tooth holder.Type: GrantFiled: October 12, 1978Date of Patent: May 6, 1980Assignee: GFM Gesellschaft fur Fertigungstechnik und Maschinenbau AktiengesellschaftInventors: Bruno Kralowetz, Peter Kirchberger
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Patent number: 4197771Abstract: A quick change device for mounting a tool in a support member such as a turret. The tool has a shank with radially outwardly movable balls therein and the mounting device includes a sleeve receivable on the shank and adapted for mounting in a bore in the support member. The shank includes an actuator ball causing the aforementioned balls to move radially outwardly and engage a shoulder at the end of the sleeve to pull the tool into a predetermined axial position and lock the tool in the aforementioned position while cooperating elements of key means in the tool in the support member prevent rotation of the tool in the support member.Type: GrantFiled: June 22, 1977Date of Patent: April 15, 1980Assignee: Kennametal Inc.Inventors: James W. Heaton, Donald W. Warren, Albert B. Albrecht
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Patent number: 4195955Abstract: A holder or nest for pin-type replaceable cutting inserts having a circular aperture centrally disposed therein, includes a pin extending perpendicularly to the face of the holder, the pin being cylindrical and being formed with a pair of discrete opposed axially-extending portions, each of the portions comprising a segment of a circular cylinder having a periphery less than 180.degree.. The radius of each of the portions is selected equal to the radius of the aperture in the cutting inserts. The portions meet in a plane normal to the face of the tool holder and disposed perpendicularly to the axis of the clamping screw which is threadedly receivable in the body of the holder.Type: GrantFiled: January 19, 1976Date of Patent: April 1, 1980Inventor: Harold W. Lindsay
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Patent number: 4189264Abstract: A polygonal insert of hard cutting material used in single and multiple toolholding means to receive the same, the insert comprising a wafer having conjunctive side walls lying in planes intersecting each other and parallel to the axis of the insert, one or more faces of the insert normal to the sides being depressed to form a peripheral ridge around the insert composed of a cutting land, either negative or positive, and downwardly extending walls to provide a polygonal recess on the face of the insert. A chip breaker insert with the same configuration as the basic insert with smaller lateral dimensions is provided to position selectively within the peripheral walls of the ridge to be clamped in place as a chip breaker. Also, a support anvil is utilized below the insert supporting the face within the ridge walls on the base of the recess in the cutting holder.Type: GrantFiled: September 15, 1978Date of Patent: February 19, 1980Assignee: Fansteel Inc.Inventor: Rolf H. Kraemer
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Patent number: 4165947Abstract: A cutting tool that has a body with an insert receiving a pocket at an extremity thereof and an insert on a support body which has surfaces complementary to support surfaces of the tool body and seated in the pocket. A cylindrical locking member is received in a bore that extends parallel to the pocket and a locking screw extends through the support body and through an open ended slot that joins the pocket and the bore and threadedly engages the locking member in such a manner that when the locking screw is tightened the insert and support member are locked into the tool body pocket and when the screw is loosened the insert, the support body, the locking screw, and the locking member can be removed from the tool body by sliding the same from the open ended slot.Type: GrantFiled: February 1, 1978Date of Patent: August 28, 1979Assignee: Sandvik AktiebolagInventor: Rune Smids
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Patent number: 4151869Abstract: A knife for a log profile cutting head assembly is detachably secured to a base including a chip directing gullett which in turn is secured to a standard cutting disc. The removable knife is shaped to include a mounting surface oriented to maximize resistance of the knife to forces encountered and includes rectilinear cutting edges which can be sharpened on conventional grinders. A grinding guide integral with the knife and positioned between one cutting surface and the mounting surface overlaps the interface of the knife and base to prevent chip jamming.Type: GrantFiled: November 21, 1977Date of Patent: May 1, 1979Assignee: Michigan Knife Co.Inventors: John E. Halloran, Leward N. Smith
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Patent number: 4137000Abstract: A cutting tool which may comprise: an elongated bar member having a wedge-shaped recess at one end thereof; a wedge-shaped anvil member rigidly and removably fastened in the wedge-shaped recess of said bar member, having an elongated recess in which a cutting insert may be received; and a clamp member removably fastened to the bar member for rigidly clamping the cutting insert in the elongated recess.Type: GrantFiled: September 14, 1977Date of Patent: January 30, 1979Assignee: Triangle Grinding, Inc.Inventors: Victor C. Takacs, Joseph E. Takacs
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Patent number: 4118138Abstract: A cutting tool which may comprise: an elongated bar member; an anvil member removably fastened to one end of the bar member and having an elongated recess in which a cutting insert may be received; and a clamp member removably fastened to the anvil member for rigidly clamping the cutting insert in the elongated recess. The elongated bar member and anvil member may be provided with cooperating key and keyway by which the anvil member is at least partially affixed to the bar member in a predetermined rigid position.Type: GrantFiled: June 13, 1977Date of Patent: October 3, 1978Assignee: Triangle Grinding, Inc.Inventors: Victor C. Takacs, Joseph E. Takacs
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Patent number: 4087194Abstract: A cutting tool which may comprise: an elongated bar member having a body portion and an end portion; and an anvil member removably fastened to the end portion of the bar member for rigidly clamping a cutting insert to the bar member for radial projection therefrom. The end portion of the bar member and anvil member, when fastened together, may form a cylindroid which in at least some embodiments may have a central longitudinal axis which is parallel but offset from the central longitudinal axis of the bar member body portion.Type: GrantFiled: April 14, 1977Date of Patent: May 2, 1978Assignee: Triangle Grinding, Inc.Inventors: Victor C. Takacs, Joseph E. Takacs