Apertured Tool Patents (Class 407/48)
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Patent number: 7168896Abstract: A cutting tool for, e.g., dressing electrode tips includes a toolholder having an opening extending through the toolholder from a top of the toolholder to a bottom of the toolholder along a central axis of the toolholder, and a plurality of insert mounting pockets disposed around the opening for mounting replaceable cutting inserts, the plurality of insert mounting pockets including a center pocket, a top pocket, and a bottom pocket. The tool also includes a center insert removably disposed in the center pocket, a top insert removably disposed in the top pocket, and a bottom insert removably disposed in the bottom pocket. When a top electrode tip and a bottom electrode tip are disposed in a dressing position relative to a top and a bottom of the opening in the toolholder and the tool is rotated, the center insert and the top insert dress the top electrode tip, and the center insert and the bottom insert dress the bottom electrode tip.Type: GrantFiled: April 14, 2005Date of Patent: January 30, 2007Assignee: Seco Tools ABInventors: Jorma Koskinen, Kent Viol, Peter Nordstrom
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Patent number: 7150590Abstract: A machining tool, especially a milling tool, includes a shaft-like holder defining a longitudinal axis (13). A seat (9) is provided in the front face of the holder for a cutting plate that can be inserted into the holder. The cutting plate has a coupling part for mounting in the seat (9) of the holder. The coupling part has three ribs which project axially from the end surface of the cutting plate that is opposite the holder and which extend radially. The ribs are provided for engagement in complementary grooves (31) configured in the seat (9) of the holder. Their side walls (37 and 35) form driving surfaces and support surfaces, which interact for transmitting a machining torque, or as axial position safety-catch, with corresponding surfaces of the flanks of the ribs of the cutting plate.Type: GrantFiled: March 25, 2003Date of Patent: December 19, 2006Assignee: Hartmetall-Werkzeugfabrik Paul Horn GmbHInventors: Hans Schäfer, Matthias Oettle
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Patent number: 7147407Abstract: The present invention provides a cutting insert an indexable cutting insert, for use in a cutting tool for milling operations. The cutting insert is generally rhomboidal in shape having a peripheral side surface extending between and perpendicular to the two opposing end surfaces. A cutting edge section is associated with each end surface and comprises first and second cutting edges merging at a corner cutting edge. The two first cutting edges associated with each end surface, form a non-zero first angle with respect to a median plane of the cutting insert. The peripheral side surface comprises four generally flat major side surfaces, two diametrically opposing radiused corner side surfaces, and two diametrically opposing generally flat minor side surfaces. Each end surface is provided with a flat end region. The flat end regions are parallel and form axially outermost protruding regions of the cutting insert.Type: GrantFiled: May 19, 2005Date of Patent: December 12, 2006Assignee: Iscar Ltd.Inventor: Amir Satran
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Patent number: 7143673Abstract: Tube ends such as those of boiler tube banks, are prepared utilizing any of various combinations of processes which include a step of micro-diameter tube film removal from a portion of a tube end, including an area below a beveled segment, or segment to be beveled. The micro-diameter film removal step provides the tube with an exposed, clean metal surface which is conducive to a subsequent welding or bonding operation performed on the tube. Preferably, the process is performed with a tube milling tool having interchangeable milling or cutting heads. A specialized milling head is also disclosed and, in one embodiment, is at least used to perform the micro-diameter tube film removal step. Advantageously, the tube film removal milling head also removes a weld overlay on one or both sides of a tube in one embodiment. The tube film removal milling head includes an attached blade having a planar face configuration which enables tube film removal.Type: GrantFiled: September 9, 2003Date of Patent: December 5, 2006Assignee: H&S Tool, Inc.Inventor: J. Randall Hall
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Patent number: 7144205Abstract: An insert retention screw has a head with a radius that is a sufficient size to fit within a mounting hole of a cutting insert and seat within a seating plane within the mounting hole that is generally perpendicular to the axis of the insert when the screw is at an angle in a range of about 0–15 degrees. The retention screw is provided for holding a cutting insert in the pocket of a tool body. The pocket is partially defined by a floor and a seating surface. A threaded hole is at an angle that is taken with reference to the pocket floor. The insert has a mounting hole passing therethrough. The retention screw passes through the mounting hole and threads into the threaded hole so as to draw the insert against the seating surface.Type: GrantFiled: May 9, 2003Date of Patent: December 5, 2006Assignee: Kennametal Inc.Inventors: Glenn W. Sheffler, Jeffrey F. Kovac, Kevin M. Gamble, Karen A. Craig
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Patent number: 7140407Abstract: A new design and configuration for tree stump cutting tooth and its corresponding holding bracket. Notch(s) on the tooth and rib(s) on the bracket are used to allow fast installation of tooth without gauging, reduced the time needed for such necessary tasks. The notch/rib structure also increases the clamping power of the bracket, reducing the possibility that any tooth would fly out, due to the centrifugal force, and cause injury. Wide notches are employed on certain heavy-duty tooth and allow the installation to be done quickly in two positions, and a small range in between the two positions.Type: GrantFiled: February 17, 2004Date of Patent: November 28, 2006Inventor: Guofang Cao
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Patent number: 7112013Abstract: A milling cutter with a disk like cutter body having radially directed slots and a central aperture. An exchangeable hub comprises two adapter members located on either side of the cutter body. One of the adapter members has a raised portion located in the central aperture. The adapter members are secured to the cutter body by means of pins which are located in blind holes in the adapter members and which pass through engagement members positioned in the slots.Type: GrantFiled: November 30, 2005Date of Patent: September 26, 2006Assignee: Iscar Ltd.Inventors: Amir Satran, Yaron Eisen
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Patent number: 7104735Abstract: A tangential milling cutting insert has two identical opposing end surfaces with two identical opposing major side surfaces of a generally parallelogrammatic shape and two identical opposing minor side surfaces extending between them. An ambidextrous tangential cutting insert has two non-identical end surfaces and two opposing major side surfaces of a generally trapezoidal nature. In either cutting insert, each end surface has a peripheral cutting edge and four corners of which two diagonally opposed corners are lowered and the other two are raised. Each end surface comprises four separate planar regions arranged in pairs, the planar regions do not protrude relative to the surrounding end surface and the two planar regions of a given pair of planar regions slope in opposite directions with respect to a median plane of the cutting insert.Type: GrantFiled: September 2, 2004Date of Patent: September 12, 2006Assignee: Ingersoll Cutting Tool CompanyInventors: William Bennett Johnson, Neil A. Vogeler
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Patent number: 7100649Abstract: A rotary cutter includes: an elongated shaft that defines a rotation axis and that has two opposite mounting ends, and at least one axially extending blade-mounting surface parallel to the rotation axis and extending between the mounting ends; a pair of blade-aligning members, each of which is mounted on a respective one of the mounting ends of the shaft, and each of which is formed with at least one protrusion; at least one blade attached to the blade-mounting surface and having two opposite end portions, each of which is formed with a recess that receives the protrusion of a respective one of the blade-aligning members; and a fastening plate and screws for fastening the blade to the shaft.Type: GrantFiled: February 8, 2005Date of Patent: September 5, 2006Assignee: Shinmax Industry Co., Ltd.Inventor: Chin Yuan Liu
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Patent number: 7094007Abstract: A tangential milling cutting insert having two identical opposing end surfaces with two identical opposing major side surfaces of a generally parallelogrammatic shape and two identical opposing minor side surfaces extending between them. Each end surface has a peripheral edge containing cutting edges and four corners of which two diagonally opposed corners are lowered and the other two are raised. Each end surface is provided with an abutment member having an abutment surface. In each cross section of the cutting insert taken in a plane parallel to a minor plane of the cutting insert, the abutment surface is closer to the median plane than a respective leading section of a major cutting edge.Type: GrantFiled: May 19, 2005Date of Patent: August 22, 2006Assignee: Iscar Ltd.Inventors: Amir Satran, Danny Dagan
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Patent number: 7090443Abstract: A cutting tool in which a cutting insert is retained by a retaining screw. The cutting insert comprises a rear surface and a lower surface, both of which are generally V-shaped.Type: GrantFiled: November 3, 2005Date of Patent: August 15, 2006Assignee: Iscar Ltd.Inventors: Gil Hecht, Ehud Levanon
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Patent number: 7051776Abstract: A rotary cutter includes: an elongated polygonal shaft that defines a rotation axis, that has blade-mounting surfaces parallel to and surrounding the rotation axis, and that is formed with blade-aligning studs for aligning a blade, the blade-mounting surfaces being equidistant from the rotation axis, two adjacent ones of the blade-mounting surfaces defining an angle therebetween, the angles defined by the blade-mounting surfaces being equal; blade-fastening plates, each of which is attached to and cooperates with a respective one of the blade-mounting surfaces of the shaft to define a blade-receiving gap therebetween for receiving the blade; and fastening screws for fastening the blade to the respective one of the blade-mounting surfaces of the shaft.Type: GrantFiled: February 8, 2005Date of Patent: May 30, 2006Assignee: Shinmax Industry Co., Ltd.Inventor: Chin Yuan Liu
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Patent number: 7044695Abstract: A milling cutter having a pair of clamping components mounted on a tool holder to form a slot for receiving a cutting insert. One of the clamping components forms an integral extension of the tool holder's shank. The two clamping components are fastened together by threaded fasteners. The insert is fastened to the clamping components by a second threaded fastener received in through-holes in the two components and a central opening in the cutting insert.Type: GrantFiled: July 2, 2004Date of Patent: May 16, 2006Inventor: Stojan Stojanovski
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Patent number: 7014393Abstract: A clamping and adjustment apparatus for a cutting tool is described in which a plate-shaped cutter insert is prestressable and fastenable by means of a tension screw with its bottom surface against a seat surface such that it is supported with lateral wall sections in a positionally fixed manner on a cutter support. In order to allow precise adjustment of the cutter insert when little space is available, the clamping and adjustment apparatus has an adjustment wedge which can be actuated by means of a pressure screw in a direction (V) that extends essentially parallel to the seat surface. The adjustment wedge is accommodated in the cutter support in a form-fitted and displaceable manner. The cutter insert is supported on the adjustment wedge and can be adjusted by means of it. Moreover, a tool which is equipped with this clamping and adjustment apparatus is described as well as a tool cartridge which is used for it.Type: GrantFiled: February 4, 2004Date of Patent: March 21, 2006Assignee: Dr. Joerg GuehringInventor: Klaus Matheis
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Patent number: 7014395Abstract: A throwaway insert and a cutting tool enable a high speed cutting operation for a metallic material having great ductility such as aluminum and obtaining a vertical wall with a high quality machined surface while improving chip control. The throwaway insert comprises a major cutting edge including a tapered cutting edge connected to a cutting edge of a nose portion, and a curved cutting edge connected to an end of the tapered cutting edge at a connection point. The curved cutting edge is formed so as to extend along an imaginary cylindrical surface whose center axis coincides with the axis of rotation of a tool main body, and tapered cutting edge is formed so as to gradually curve from the imaginary cylindrical surface toward the inside of the imaginary cylindrical surface as the distance from the curved cutting edge increases, and the distance from the nose portion decreases.Type: GrantFiled: March 7, 2003Date of Patent: March 21, 2006Assignee: Mitsubishi Materials CorporationInventors: Hisashi Daiguji, Yoshihiko Kimura
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Patent number: 7004689Abstract: A high-speed milling cutter (10) includes a shank (12), a front portion (14), and a transition surface (16) between the shank (12) and the front portion (14). The cutter (10) also includes an insert pocket (20) having a bottom surface (22) and side surfaces (24, 26). The bottom surface (22) includes a raised boss (28) for supporting a cutting insert (30). The cutting insert (30) has a top surface (32), a bottom surface (34) and side surfaces (36, 38, 40, 42). The cutting insert (30) includes a primary cutting edge (44, 46) formed at an intersection between the top surface (32) and two of the side surfaces (36, 38, 40, 42). The top surface (32) of the cutting insert (30) includes a concave or dish-shaped topography that is designed for high-speed milling operations of a metallic work piece.Type: GrantFiled: January 9, 2004Date of Patent: February 28, 2006Assignee: Kennametal Inc.Inventors: Kenneth G. DeRoche, Mark A. Francis, Brian D. Hoefler
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Patent number: 7001114Abstract: An apparatus for chip removing machining includes first and second parts which are intercoupled by a coupling. The coupling includes two interacting surfaces disposed on the first and second parts, respectively. The interacting surfaces are profiled to intermesh with one another to define an intermeshing region of the coupling. Each of the surfaces is profiled with first and second sets of grooves which define first and second main directions, respectively, which extend transversely to one another. At least one groove on each of the surfaces extends across less than the entire intermeshing region, wherein the surfaces define only one coupling position for the first and second parts.Type: GrantFiled: July 1, 2003Date of Patent: February 21, 2006Assignee: Seco Tools ABInventors: Mats Blücher, Jonas Boman, Thomas Eriksson, Jan-Olf Lundeqvist, Kaj Virtanen
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Patent number: 6939091Abstract: A cutting insert for milling cam shafts includes first and second surface interconnected by a third surface, and at least one cutting edge. The cutting edge includes a straight first cutting edge section, a straight second cutting edge section, and a generally convex third cutting edge section, all adjoining one another. The first section extends along the junction between the first and third surfaces. The second section extends along the junction and includes a first end adjoining an end of the first section. The second is inclined at an obtuse angle from one end of the first section in a direction away from the third surface. The third section extends along the junction and adjoins a second end of the second section. The third section is of generally convex shape and extends over an angular range greater than 90°. The first, second and third sections lie in the third surface.Type: GrantFiled: April 3, 2001Date of Patent: September 6, 2005Assignee: Sandvik ABInventor: Günter Wermeister
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Patent number: 6834692Abstract: A tip for a rotary debarker has a polygonal main body with a front surface and a rear surface, and at least one cutting blade along each of the opposed edges. The main body includes a non-circular mounting boss extending from the rear surface. The main body is mounted to a tip holder that has a non-circular seat for receiving the non-circular mounting boss. The non-circular mounting boss and seat restrict relative movement between the tip and the holder during cutting operations. The tip is reversible relative to the holder to provide two operative cutting blades per tip.Type: GrantFiled: August 7, 2002Date of Patent: December 28, 2004Assignee: Lindsay Forest Products, Inc.Inventors: David J. Lindsay, Bruce Foerster
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Publication number: 20040253062Abstract: A milling tool has a cutting edge geometry with a main cutting edge, a cutting corner, optionally with a bordering planar cutting edge segment, and a secondary cutting edge. The tool is used for milling to achieve the smoothest level surface possible parallel to the rotational axis of the milling tool. Each main cutting edge is formed to result in a generatrix of the envelope curve described by the rotation of the milling tool that has a first outwardly curving segment and a second inwardly curving segment. The first segment increases in its distance from the rotational axis from the beginning of the segment to the end of the segment. The distance of the second segment decreases from its beginning towards its end. The tangents at each point of the second segment encompass an angle &agr;2 of more than 0° and up to 3° with a parallel to the rotational axis.Type: ApplicationFiled: June 21, 2004Publication date: December 16, 2004Applicants: Ceratizit Austria Gesellschaft mbH, Airbus France Societe Par Actions SimplifieeInventors: Uwe Schleinkofer, Jurgen Duwe, Wolfgang Koch, Didier Le Borgne
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Publication number: 20040223818Abstract: A cutting insert comprises an elliptical cutting edge. The cutting insert has a mounting hole through which a retention screw may pass, wherein the retention screw makes contact with the mounting hole in a seating plane that is perpendicular to the mounting hole. The cutting insert is adapted for use in a cutting tool comprising a tool body having a pocket partially defined by a floor that is parallel to a seating plane. The insert can have a shape complimentary to a tool body so as to cooperate with the tool body to form a continuous flute. According to one embodiment of the invention, the insert has a flank edge inboard with respect to the tool body. An insert according to another embodiment of the invention has a rake face with a positive cutting geometry.Type: ApplicationFiled: May 9, 2003Publication date: November 11, 2004Inventors: Glenn W. Sheffler, Jeffrey F. Kovac, Kevin M. Gamble
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Patent number: 6773209Abstract: A cutter system that is designed to create a continuous cutting true helix while having cutting inserts that are indexable on at least two cutting edges by rotating the cutting insert. High positive radial and axial rakes enable free cutting machining with a fine finish and low horsepower consumption. The back face of the insert is substantially flat and is used for face contact on lockup with a mounting pocket on the cutter body when the insert screw is tightened. The mounting pocket is designed for ease of manufacture to limit tolerance buildup to ensure repeatable insert positioning and to maintain accuracy for a fine cutting finish. The insert screw hole is placed in the cross hole location for allowing an unobstructed cutting face and a larger diameter center core in the cutter body. The larger core creates maximum strength and allows longer cutting lengths. Prior to grinding, the insert blank can be used for multiple diameters of cutters.Type: GrantFiled: May 31, 2002Date of Patent: August 10, 2004Assignee: Kennametal Inc.Inventor: Karen A. Craig
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Patent number: 6769842Abstract: Cutter plates (19) with an approximately cube-shaped base body have been created, in particular for finish-milling of a crankshaft (5). At the edge of its cover surface, the base body is provided with a hump or protrusion, which can be embodied rib- or strip-shaped, has a cutting edge each on its front and back and adjoins the neighboring lateral surface. This cutting edge is a component of the main cutting edge (33) adjoining the cover surface. A corresponding protrusion (29) is provided on the lower end of the lateral surface (27) and adjoins the end of the cover surface (22) remote from the protrusion (28). In this case the lateral surface (27) is preferably inclined in such a way that it terminates flush with the protrusion (29) without forming a concave surface area with it.Type: GrantFiled: September 10, 2002Date of Patent: August 3, 2004Assignee: Walter AGInventors: Michael Nerlich, Thomas Digel
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Publication number: 20040134051Abstract: A thread milling or cutting tool (1) comprises a carrier piece (2) rotatable around an axis of rotation (D), at least one cutting element (3, 3′, 3″, 3′″) releasably attachable or attached on the carrier piece (2), and at least one fastening element (4, 4′, 4″, 4′″) releasably attachable or attached on the carrier piece (2), wherein at least one cutting element (3, 3′, 3″, 3′″) has no hole for attachment by means of a fastening screw, but is positively and/or non-positively attachable or attached between the carrier piece (2) and at least one fastening element (4, 4′, 4″, 4′″) and/or between at least two fastening elements.Type: ApplicationFiled: October 17, 2003Publication date: July 15, 2004Inventors: Helmut Glimpel, Ernst Meyer
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Patent number: 6761514Abstract: A hollow mill tool comprising a shank portion and a plurality of radially spaced and axially extending tool posts integrally formed with and projecting from the shank portion. Each tool post has a longitudinal cutting insert mounting face and each mounting face defines a first plurality of axially extending serrations. A cutting insert is mounted on each mounting face and each insert has a second plurality of axially extending serrations defining a back face and intermeshing with the first plurality of serrations. A threaded fastener extends through a front face of each cutting insert and is received in each of the tool posts to securely hold each cutting insert against its tool post.Type: GrantFiled: October 19, 2001Date of Patent: July 13, 2004Assignee: Master Tool CorporationInventor: John M. Cirino
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Patent number: 6752184Abstract: A milling tool for machining wood, synthetic materials or the like, has at least one cutting edge disposed on the milling tool, a chip chamber for receiving chips disposed directly in front of the cutting edge in a direction of rotation or a gap that is connected to a tool cavity inside the tool and that in turn has an axial ejection slot for evacuating the chips. The chip chamber or the gap form an opening for the evacuation of chips, the opening extends approximately perpendicular to a cutting plane formed by the cutting edge and the direction of cutting, wherein the opening has a cross section that is bigger than a projected surface of a chip that is separated by the cutting edge during a cutting operation.Type: GrantFiled: November 19, 2001Date of Patent: June 22, 2004Assignee: Technische Universitaet DresdenInventors: Roland Fisher, Michael Oertel, Klaus Rehm
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Publication number: 20040101371Abstract: This invention relates to a tool intended for chip removing machining together with a cutting insert therefor. The cutting insert is formed having a connecting surface or serrations that comrises ridges (11) and intermediate grooves. The flanks (18) which delimit the ridge (11) have a convexly curved surface (28), the contact point of which to a co-operating flank (25) of a co-operating ridge consists of a line (G), which extends axially along the length extension of the flank and is situated in an area approximately halfway between on teh one hand an outer transition (19) between the flank (18) and an apex (17) and on the other hand an inner transition (23) between the flank and a groove bottom. The convexley curved surface extends inwards as well as outwards from said contact line (G), in order to guarantee that practical contact between the flanks of the co-operating ridges is attained via surface contact at an indifferent place between the outer and inner limiting edges (29, 30) of the curved surface.Type: ApplicationFiled: December 3, 2003Publication date: May 27, 2004Inventors: Peder Arvidsson, Jan Johansson, Lars-Erik Enquist
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Patent number: 6708382Abstract: In a complex tool to be installed on a machine tool capable of turning machining and milling machining operations, a main body is provided, and carries inserts for turning machining, inserts for milling machining and inserts for drilling machining. Turning machining and drilling/milling machining operations can be executed using the inserts installed on the main body, without the need for tool exchange, saving time and labor. The inserts as installed have opposite rotational cutting directions, and are placed on opposite sides of concavities that extend radially inwardly and axially back from the end of the main body. The inserts can be placed at the same or different cutting distances and can be brought into engagement with the workpiece by selection of the relative orientations of the rotation axis and the workpiece.Type: GrantFiled: September 5, 2001Date of Patent: March 23, 2004Assignee: Yamazaki Mazak Kabushiki KaishaInventors: Tsunehiko Yamazaki, Sadami Miyazaki
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Patent number: 6709205Abstract: A cutting tool having replaceable indexable cutting insert retained in insert pockets. Each insert pocket has a base wall and first and second rear sidewall sections. A generally circular recess having a peripheral wall extends downwardly from the base wall. The cutting insert comprises an upper surface, a side surface and a lower surface from which a cylindrical protrusion extends downwardly. A first abutment surface located on the first rear sidewall section abuts a first support surface located on the side surface of the cutting insert, a second abutment surface located on the second rear sidewall section abuts a second support surface located on the side surface of the cutting insert, and a third abutment surface located on the peripheral wall of the recess abuts a third support surface located on the cylindrical protrusion of the cutting insert.Type: GrantFiled: October 16, 2002Date of Patent: March 23, 2004Assignee: Iscar Ltd.Inventors: Rafael Morgulis, Gil Hecht
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Patent number: 6675849Abstract: The invention relates to a device and method for making tenons using an adjustable shim placed between cutting blades. The adjustable shim has a plate with a recess capable of accepting spacers of varied thicknesses and a cover that encloses any of the spacers placed in the recess. The thickness of the adjustable shim is adjusted by placing spacers in the recess to shim apart the cutting blades leaving between them a distance approximately equal to the desired tenon thickness.Type: GrantFiled: February 19, 2003Date of Patent: January 13, 2004Inventor: Mark Lackley
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Publication number: 20030219320Abstract: A throwaway insert enables reduction in cutting force and improves chip separation ability without sacrificing the strength of cutting edge thereof. An upper face of the throwaway insert is provided with an undulating portion, which is formed by alternately arranged concave portions and convex portions, so as to provide a wavy shape to the cutting edge. The undulating portion comprises four concave portions, i.e., a first deep-concave portion, a first shallow-concave portion, a second deep-concave portion, and a second shallow-concave portion. The first deep-concave portion and the second deep-concave portion are located so that effective cutting region of the cutting edge is divided into three portions having lengths substantially equal to each other, and the second deep-concave portion is made deeper than the first deep-concave portion.Type: ApplicationFiled: May 21, 2003Publication date: November 27, 2003Inventors: Nobukazu Horiike, Jun Kitajima, Hiroshi Shimomura, Koichi Ikenaga
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Publication number: 20030210961Abstract: A tool intended for chip removing machining includes a holder and a cutting insert which have respective connecting surfaces arranged to engage each other and define an interface. A ridge having a tapering cross-sectional shape is formed in one of the connecting surfaces, and a groove having a tapering cross-sectional shape is formed in the other connecting surface, which groove receives the ridge. Both of the ridge and groove are in the shape of curves as viewed in a direction perpendicular to the respective connecting surface. The curve shape may be circular, elliptical, or polygonal.Type: ApplicationFiled: March 21, 2003Publication date: November 13, 2003Inventor: Peder Arvidsson
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Patent number: 6626614Abstract: In order to improve durability, machining stability, machining accuracy, etc. of a throwaway cutting tool in which a cutting head having a cutting edge is detachably mounted to the tip of a tool body using a clamping tool so that its function can be regenerated by replacing the cutting head, protrusions 8, 16 having their height gradually increasing and recesses 9, 15 having their depth gradually increasing from the center toward outer periphery of the tool are formed alternately with each other in a radial arrangement on the front surface of the tool body 2 and a support surface of the cutting head 3, which is formed by sintering, respectively. The protrusions and recesses, which are provided so that their positions correspond to each other, are conically engaged, thereby centering the cutting head and preventing its movement.Type: GrantFiled: July 3, 2002Date of Patent: September 30, 2003Assignee: Sumitomo Electric Industries, Ltd.Inventor: Naohiro Nakamura
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Patent number: 6591878Abstract: A method and apparatus for clamping a knife. A front side of the knife includes a recess and the knife is clamped between an outer clamping member adapted to receive the back side of the knife, and a inner clamping member adapted to receive the front side of the knife, the inner clamping member making contact with the front side of the knife at two spaced locations thereon, wherein at least one of the locations is outside the recess and the other is inside the recess, wherein the width of the recess normalized by the overall width of the knife yields a result that is preferably no more than about 0.22.Type: GrantFiled: July 18, 2001Date of Patent: July 15, 2003Assignee: Key Knife, Inc.Inventor: Thomas Charles Hinchliff
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Publication number: 20030113175Abstract: The invention relates to a cutting insert used for cutting metal, especially for milling for example camshafts. The inventive insert comprises at least one cutting edge (4, 4′) that is formed by the intersection of a face (2) with a flank (3). The aim of the invention is to provide a cutting insert for a milling cutter and a corresponding milling cutter the noise level of which, even if at full load, is considerably reduced for high-speed milling. To this end, the cutting edges (4, 4′) extend at an angle deviating from 90° relative to the cutting direction of the cutting insert.Type: ApplicationFiled: December 16, 2002Publication date: June 19, 2003Inventor: Gunter Wermeister
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Patent number: 6502609Abstract: A cutter head, especially a chipping cutter head for chip forming timber machinery, is disclosed together with a knife and knife holder therefor. The cutter head, with a basic cutter head body, has at least one knife mounting area with holder contact surfaces inclined in a V-shape. At least one knife is detachably fixed to the respective knife mounting area by a fixing screw with the knife bearing with knife contact surfaces inclined in a V-shape against the holder contact surfaces. The fixing screw retains the knife on the knife mounting area by means of a retaining force acting in the area between the contact surfaces inclined in a V-shape.Type: GrantFiled: December 7, 1999Date of Patent: January 7, 2003Assignee: Lindex Chipping Systems, Inc.Inventor: Martin Guels
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Publication number: 20020037199Abstract: A cutting tool (20) comprising a tool body (22) and two cutting inserts (24) mounted therein. An insert receiving pocket (26) of the tool body has a pocket base wall (30). An indentation (32) that opens to the pocket base wall has a lower wall (34) that is bounded by first (36), second (38), third (40) and fourth (44) side walls. The cutting insert has an insert base wall (68). A protuberance (69) extends downwards from the insert base wall and has a lower wall (70) bounded by first (72), second (73), third (74) and fourth (75) lateral walls.Type: ApplicationFiled: November 28, 2001Publication date: March 28, 2002Inventors: Amir Satran, Yuri Men
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Patent number: 6270292Abstract: A cutting insert for mounting on a tool holder of a cutting tool, comprises a front cutting portion having an operative front surface associated with at least one cutting edge, and a trailing mounting portion. The trailing mounting portion has upper, lower and side walls extending from the front cutting portion to a rear abutment wall of the trailing mounting portion oriented generally co-directionally with said operative front surface. The side walls of the trailing mounting portion meet with the rear abutment wall at rear edges. The rear abutment wall comprises two lateral surfaces and a central surface therebetween, the lateral surfaces converging from the rear edges in the direction towards the front cutting portion, and the central surface protruding, in the direction away from the front cutting portion, rearwardly from the lateral surfaces and meeting therewith at merging edge regions.Type: GrantFiled: June 23, 1999Date of Patent: August 7, 2001Assignee: Iscar Ltd.Inventors: Amir Satran, Rafael Margulis
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Patent number: 6260592Abstract: A replaceable cutting piece and a cutting arm for a debarking cutter for a debarking machine of a hollow-rotor type, which cutting piece (6) and cutting arm (4) comprise supporting surfaces and abutment surfaces for receiving loads acting on the cutting piece fastened by a retaining screw to a housing (7) formed in the cutting arm. In order to direct the loads acting on the cutting piece in full to the cutting arm instead of to the retaining screw, the cutting piece and the cutting arm comprise supporting surfaces and abutment surfaces (9a to 9d, 11a, 11b, 12a, 14a, 14b) for receiving the loads acting on the cutting piece in the direction of the axle, the radius and the tangent of the rotor and the torque caused by said loads, which surfaces are situated in perpendicular planes with respect to one another.Type: GrantFiled: December 22, 1997Date of Patent: July 17, 2001Assignee: Valon Kone OyInventor: Holger Lindholm
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Patent number: 6231274Abstract: An end mill comprises an arbor, a tool body attached to an end of the arbor, and throw-away chips detachably attached to an end face of the tool body. Each throw-away chip has a cutting edge having a peripheral circular cutting edge section for shaping, and an end straight cutting edge section for end milling.Type: GrantFiled: October 15, 1999Date of Patent: May 15, 2001Assignee: Toshiba Kikai Kabushiki KaishaInventors: Masayoshi Yoneyama, Husao Sakai, Michio Mori
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Patent number: 6220794Abstract: A rotary cutting tool for cutting a spherical seat on a surface of a workpiece comprises a body adapted to carry cutting inserts. The body is fixed to a drive shaft which rotates the body about a longitudinal center axis of the body. The body includes a forwardly facing front surface of generally convex shape, and a plurality of insert seats formed in the front surface in circumferentially spaced relationship about the axis. Each of the seats faces forwardly and comprises recesses of generally pyramidal shape. A screw threaded hole extends through each of the seats in a rearward direction and is adapted to receive an insert fastening screw. The cutting inserts include projections of generally pyramidal shape received in respective ones of the recesses. The projections are formed by a first plurality of V-shaped parallel grooves intersected by a second plurality of V-shaped parallel grooves arranged perpendicular to the first groove.Type: GrantFiled: March 5, 1999Date of Patent: April 24, 2001Assignee: Carboloy Inc.Inventors: Gregory Allen Calamia, Alan Joseph Kardos, Terrence John Poltz
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Patent number: 6203251Abstract: An indexable insert milling tool with a milling body which on the circumference comprises distanced chip spaces, in which insert seats for indexable cutting inserts are formed, and with fastening screws which can be screwed into a threaded bore in the insert seat for fastening the indexable inserts via a middle hole, wherein the insert seat comprises a first bearing surface extending roughly perpendicular to the threaded bore, against which the rear side of the indexable inserts bear and a second bearing surface on the inner side of the chip spaces, against which the indexable inserts laterally bear. The indexable insert on the rear side on the cutting edge sides comprise raised elongate support sections wedge-shaped in cross section with lower parallel distanced elongate support surfaces.Type: GrantFiled: September 23, 1999Date of Patent: March 20, 2001Assignee: Wilhelm Fette GmbHInventors: Klaus Oppelt, Bernd Bentjens
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Patent number: 6186199Abstract: A milling tool for machining workpieces of wood, derived timber products, plastic material etc., has a support with a receiving portion and a cutting portion. The cutting portion has cutouts with a support surface for receiving at least two exchangeable cutting tips that are connected to the cutouts by at least one screw, respectively. The cutting portion has bores extending from the support surface of the cutouts into the cutting portion. the bores have a threaded portion and a threadless portion. The screws are threaded into the threaded portion of the bores for pressing the cutting tips against the support surface. The cutting tips have receiving openings. The screws have a guide shaft penetrating the receiving opening and extending into the threadless portion that has a tight clearance fit relative to the guide shaft. The screws have a head and the head has a clamping surface extending parallel to the support surface. The guide shaft is arranged adjacent to the clamping surface.Type: GrantFiled: December 11, 1998Date of Patent: February 13, 2001Assignee: Ledermann GmbHInventors: Hans-Jürgen Gittel, Pascal Wendel
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Patent number: 6158927Abstract: A milling cutter is provided including a tool holder and a cutting tool insert. The tool holder includes a mounting end portion and a cutting end portion. The cutting end portion includes a slot defined by first and second diagonal surfaces provided in an end of the cutting end portion. The first and second diagonal surfaces form a substantially V-shaped pocket for receiving the cutting tool insert. The cutting tool insert includes a substantially flat body member having a V-shaped seat portion and a cutting portion, the cutting portion includes a first cutting lobe and a second cutting lobe. A hole is provided which passes through the body member. A screw hole passes through the cutting end portion of the milling cutter which intersects the U-shaped pocket. A threaded portion of the screw hole is offset from a clearance portion of the screw hole to positively seat the V-shaped seat portion of the insert in the V-shaped pocket of the tool holder.Type: GrantFiled: February 27, 1998Date of Patent: December 12, 2000Assignee: Cole Carbide Industries, Inc.Inventors: John M. Cole, Wolfried H. Mielert
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Patent number: 6071045Abstract: A cutting insert (20) having a geometrical configuration comprising first and second oppositely facing, parallel faces interconnected by a V-shaped bottom (26) and side (28) and top (30) walls perpendicular to the faces with the side walls (28) being parallel to one another. The cutting insert (20) has first (32) and second (34) flutes disposed on opposite sides of a center axis with the first flute (32) extending in an arc from the top wall (30) to one of the side walls (28) and the second flute (34) extending in an arc from the top wall (30) to the other of the side walls (28). The first flute (32) presents a flute surface extending in the arc and is disposed at an angle sloping downwardly from the first face (22) to the second face (24) along the entire arc thereof to define intersections with the top wall (30) and one of the side walls (28) respectively which are disposed at an angle other than 90.degree. relative to the faces.Type: GrantFiled: May 6, 1998Date of Patent: June 6, 2000Inventor: Daniel Janness
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Patent number: 6039096Abstract: The invention concerns a milling tool (10) with reduced noise emission for machining panel-like pieces of wood. The reduction in noise emission is brought about by reducing the vibrations produced in the tool and workpiece and by proportioning the cut, machining being carried out in two stages. The greatest part of the chip volume (first stage) is removed under favorable noise-emission conditions using a special cutting geometry. The tool and workpiece vibrations are reduced by a clearly reduced rise in the shear force pulse using a special cutting tooth geometry. The chip volume removed under these conditions is only small (second stage), and so good quality machining can be attained.Type: GrantFiled: August 27, 1998Date of Patent: March 21, 2000Inventors: Uwe Heisel, Johannes Troger
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Patent number: 5924824Abstract: A cutting insert for mounting in a cutting tool, comprises a cutting head portion with a substantially arcuate cutting edge and a substantially trapezoidal mounting body portion integrally formed therewith. The mounting body portion has substantially planar upper and lower surfaces and substantially straight side surfaces converging in the direction away from the cutting head portion. The entire cutting edge of the cutting head portion lies on a sphere and defines an arc substantially less than 90.degree., the cutting head portion having an imaginary chordal plane passing through peripheral ends of the arc. The side surfaces of the mounting body portion are directed substantially radially with respect to a center of the sphere and are substantially shorter than the length of the chordal plane.Type: GrantFiled: August 13, 1997Date of Patent: July 20, 1999Assignee: Iscar Ltd.Inventors: Amir Satran, Yuri Men
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Patent number: 5924825Abstract: This invention relates generally to a thread cutting insert and more particularly to a thread cutting insert comprising a base and a threading portion. The threading portion has a first thread removal portion and a second thread removal portion for minimizing lead-in and exiting threads, and a cutting portion for cutting a plurality of internal threads. The principle use is for applications that have fluid communicated through the workpiece, such as a fuel injector.Type: GrantFiled: July 6, 1998Date of Patent: July 20, 1999Assignee: Caterpillar Inc.Inventors: Francis M. Schwab, Theodore D. Steidinger
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Patent number: 5893401Abstract: The invention concerns a barking tool for barking machines of the type having a plurality of swinging arms, each being at an inner end pivotally mounted on an annular rotator which is rotatable about an axis of rotation, and each having at a free outer end a processing edge. The processing edge is defined between a front and a top surface, which is adapted, during barking, to make an acute angle with the circumferential surface of the log. The barking tool further has a bead, which is located on the top surface in an area adjacent to the end of the processing edge furthest down in the feeding direction.Type: GrantFiled: February 19, 1998Date of Patent: April 13, 1999Assignee: Iggesund Tools ABInventor: Bror Eriksson
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Patent number: 5890854Abstract: A shaping tool for the stock-removal machining of wheelsets. The tool contains a shell-end milling cutter comprised of a disc-shaped body with a multiplicity of cutting edges which overlap each other and are disposed spirally staggered on pitch circles on such disc-shaped body.Type: GrantFiled: February 18, 1997Date of Patent: April 6, 1999Assignee: Niles-Simmons Industrieanlagen GmbHInventors: Hans J. Naumann, Ross Hermann, Reinhard Robotta, Hans Lutze