Tilting Clamp Element And Separate Means To Tilt Same Patents (Class 407/105)
  • Patent number: 11759865
    Abstract: A tool body in which a cutting insert can be replaced easily is provided. The tool body which fixes the indexable cutting insert includes an insert mounting seat which is provided on a first surface of the tool body, a clamp member which binds the cutting insert placed on the insert mounting seat, and an operating member which operates the clamp member. The operating member can lower the clamp member from the first surface toward a second surface of the tool body on an opposite side thereof to the first surface and can raise the clamp member from the second surface toward the first surface. The clamp member has a hook portion which is brought into contact with a diameter reducing portion formed on an inner peripheral surface of a mounting hole of the cutting insert in a state where the clamp member is lowered.
    Type: Grant
    Filed: January 7, 2022
    Date of Patent: September 19, 2023
    Assignee: TUNGALOY CORPORATION
    Inventors: Tatsumi Kato, Ryuichi Saji
  • Patent number: 11660679
    Abstract: A tool body to which a replaceable cutting insert is fixed includes: a holder: an insert mounting seat that is provided on a first surface of the holder; a clamp member that constrains the cutting insert placed on the insert mounting seat; and an operating member that presses a pressure receiving surface of the clamp member. The clamp member has the pressure receiving surface, a spherical head portion that is formed into a spherical crown shape, and a hook portion that protrudes to a side opposite to a side of the spherical head portion when seen from a side of the first surface. The insert mounting seat supports the clamp member to be swingable with the spherical head portion as a fulcrum, and the hook portion contacts a diameter reducing portion that is formed on an inner peripheral surface of an mounting hole for the cutting insert in a state in which the pressure receiving surface is pressed.
    Type: Grant
    Filed: January 12, 2022
    Date of Patent: May 30, 2023
    Assignee: TUNGALOY CORPORATION
    Inventors: Tatsumi Kato, Ryuichi Saji
  • Patent number: 11590580
    Abstract: A turning tool includes a tool body and a turning insert, and an insert seat in which the turning insert is mounted. The insert seat includes a bottom surface and a side surface, the side surface having a first surface and a second surface. The first surface includes a contact surface, wherein the contact surface is in contact with a portion of the side surface of the turning insert. The tool body includes a coolant channel, which extends between a coolant channel inlet and a coolant channel outlet opening into a void between the side surface of the turning insert and the first surface of the side surface of the insert seat.
    Type: Grant
    Filed: February 28, 2019
    Date of Patent: February 28, 2023
    Assignee: AB SANDVIK COROMANT
    Inventors: Ronnie Lof, Adam Johansson, Krister Wikblad
  • Patent number: 11541463
    Abstract: [Problem] A cutting tool to which a cutting insert can be firmly fixed is provided. [Means for Resolution] Provided is a cutting tool where a replaceable cutting insert having a hole for fixing is mountable. The cutting tool includes a main body portion, a lever, a pin, and a screw. The main body portion has a placement surface where the cutting insert is placed, a side wall coming into contact with at least one side surface of the cutting insert, a lever accommodating hole, a pin accommodating hole, and a screw accommodating hole. The screw presses a rear end portion of the pin by being tightened. A tip portion of the pin presses the lever by the rear end portion being pressed against the screw.
    Type: Grant
    Filed: May 28, 2021
    Date of Patent: January 3, 2023
    Assignee: TUNGALOY CORPORATION
    Inventors: Tatsumi Kato, Jun Otsuka, Takehiro Ida
  • Patent number: 10730115
    Abstract: A cutting tool fastener having a rotation axis and configured to secure together, and establish a fluid path between, two cutting tool members, while also accommodating angular and pivotal displacement between the two. The fastener comprising a head with at least one head opening for emitting fluid, and a body which extends from the head and has a body opening for receiving fluid to be emitted via the head opening. The head has a spherical head abutment surface with a bottom spherical seal surface zone. At least a portion of the spherical head abutment surface faces the body, and the head opening opens out to the spherical head abutment surface. The bottom spherical seal surface zone is axially located between the body and the head opening.
    Type: Grant
    Filed: November 19, 2018
    Date of Patent: August 4, 2020
    Assignee: Iscar, Ltd.
    Inventors: Leonid Amstibovitsky, Grigori Neiman
  • Patent number: 9901986
    Abstract: A swiss insert includes a chip former arrangement. The chip former arrangement includes a ridge separated on each side from a cutting edge's sub-edge by a chip surface. In a side view, each sub-edge extends in a straight line.
    Type: Grant
    Filed: February 15, 2016
    Date of Patent: February 27, 2018
    Assignee: Iscar, Ltd.
    Inventors: Dima Makhlin, Sergey Chistyakov
  • Patent number: 9737935
    Abstract: A turning insert includes a top surface, an opposite bottom surface, side surfaces connecting the top surface and the bottom surface and two opposite nose portions. Each nose portion includes a convex nose cutting edge, a first cutting edge and a second cutting edge. The convex nose cutting edge connects the first and second cutting edges. A bisector extends equidistantly from the first and second cutting edges. In a top view the first and second cutting edges on the same nose portion form a nose angle (?) of 70-85° relative to each other. Each nose portion includes a third convex cutting edge adjacent to the first cutting edge and a fourth cutting edge adjacent to the third cutting edge. In a top view the fourth cutting edge forms an angle (?) of 0-34° relative to the bisector.
    Type: Grant
    Filed: October 7, 2016
    Date of Patent: August 22, 2017
    Assignee: SANDVIK INTELLECTUAL PROPERTY AB
    Inventors: Ronnie Lof, Adam Johansson
  • Patent number: 9409236
    Abstract: A turning and face grooving tool body has a pocket and a pin. The pin has a unitary one-piece construction and an elongated shape which defines a longitudinal direction along a pin axis. The pin includes pin top and bottom ends, a pin peripheral surface which extends therebetween, and a pivot protrusion which extends outwardly from the pin peripheral surface. The pin is rotationally asymmetric about the longitudinal pin axis. The pocket includes a base surface, transverse support walls, and a pin bore which opens out to the base surface and includes a pin bore inner surface. The pin is located in the pin bore and the pin top end protrudes beyond the base surface. The pivot protrusion is spaced apart from the pin top and bottom ends, offset in the longitudinal direction from a pin midway-point which is located midway between the pin top and bottom ends.
    Type: Grant
    Filed: July 23, 2014
    Date of Patent: August 9, 2016
    Assignee: Iscar, Ltd.
    Inventor: Shimon Athad
  • Patent number: 9079252
    Abstract: A cutting tool has an S-shaped cutting insert retained in a corresponding insert pocket. The insert pocket has a longitudinal main axis extending in a forward to rearward direction. The cutting insert has a longitudinal first axis and a lateral second axis, with two opposite cutting portions and a clamping portion therebetween, arranged along the first axis. The insert pocket includes a forward clamping portion with a forward abutment surface, and a rear clamping portion with first and second rear abutment surfaces. Two side flanks of the cutting insert extend longitudinally oppositely, with first and second clamping surfaces located adjacent each side flank. The first and second clamping surfaces adjacent one side flank abut the first and second rear abutment surfaces, respectively. The first clamping surface adjacent the other side flank abuts the forward abutment surface. Neither of the side flanks abuts the tool holder.
    Type: Grant
    Filed: January 16, 2013
    Date of Patent: July 14, 2015
    Assignee: Iscar, Ltd.
    Inventor: Gil Hecht
  • Patent number: 8956086
    Abstract: A toolholder assembly includes a toolholder body having a coolant passage and a cutting insert seated within a recess of the body. The cutting insert includes an insert orifice extending between a top face and a bottom face that aligns with the coolant passage. A lock pin includes a lock pin orifice that aligns with and is in fluid communication with the coolant passage of the body. The lock pin orifice has an outlet port to allow the fluid to flow through the lock pin orifice and exit through the outlet port. A lock pin ring includes a coolant port in fluid communication with the outlet port of the lock pin to effectively discharge cooling fluid in the direction of a cutting area of the cutting insert.
    Type: Grant
    Filed: December 17, 2012
    Date of Patent: February 17, 2015
    Assignee: Kennametal Inc.
    Inventors: Shi Chen, Nicholas Joseph Henry, Kent Peter Mizgalski
  • Patent number: 8950983
    Abstract: A cutting tool has a main tool body and at least one insert seat disposed thereon. The seat has a bottom surface for mounting a cutting insert, and further has a dowel pin, which penetrates a through-hole of the mounted cutting insert and the bottom surface and can be fixed to the main tool body. A center longitudinal axis of the fixed dowel pin is arranged at an acute angle with respect to the bottom surface. The dowel pin contains a spherical segment for mounting on a bearing surface of the through-hole. The surface of the spherical segment is interrupted by a segment groove.
    Type: Grant
    Filed: June 8, 2010
    Date of Patent: February 10, 2015
    Assignee: Ceratizit Austria Gesellschaft mbH
    Inventors: Peter Burtscher, Anton Diepold, Uwe Schleinkofer
  • Patent number: 8806997
    Abstract: An apparatus for the machining of optical workpieces of materials of non-brittle hardness, particularly of plastics material spectacles lenses, has a holder, which is operatively connected with an actuator for reciprocating movement, and a support, which is fixable to the holder and to which a cutting tip of monocrystalline diamond, which has an arcuate cutting edge, is fastened. In order to be able to use the cutting edge over its curve length to avoid of premature wear in the rotary machining, provision is made for a positioning device, by which the support is fixable in at least two different relative positions with respect to the holder to dispose substantially different circumferential sections of the cutting edge for the rotary machining.
    Type: Grant
    Filed: August 30, 2010
    Date of Patent: August 19, 2014
    Assignee: Satisloh GmbH
    Inventors: Udo Fiedler, Thomas Mappes
  • Patent number: 8641330
    Abstract: A tool for chip removing machining includes a tool holder in order to releasably hold at least one cutting insert. The cutting insert is arranged to be fixable in an insert pocket of the tool holder by a locking screw. The locking screw has a head and is in threaded engagement with the tool holder via a threaded joint which is arranged to allow tilting of the locking screw in a working direction of the tool when the locking screw is partly unscrewed so that the cutting insert can be removed from the insert pocket. The head is arranged to clamp against a part of a front side of the cutting insert. The tool holder includes at least one space at least partly arranged to receive the head when the screw is partly unscrewed.
    Type: Grant
    Filed: December 5, 2006
    Date of Patent: February 4, 2014
    Assignee: Seco Tools AB
    Inventor: Mikael Jansson
  • Patent number: 8573900
    Abstract: A tool holder includes an insert pocket having a support surface with a pocket recess occupied by a lever pin, and a fastening member. A head portion of the lever pin has a lever head rear contact surface, located above the support surface, for pressing against a bore of a cutting insert in the insert pocket. The fastening member engages a threaded recess which extends from the pocket recess along a threaded recess axis. The fastening member includes a guiding prong, located within a blind hole in the front of the lever pin. A clamping contact surface of the fastening member is adjacent to a lever front contact surface of the lever pin. A first longitudinal distance, between the lever rear contact surface and the lever front contact surface, is smaller than a second longitudinal distance, between the lever front contact surface and a lever rear contact surface.
    Type: Grant
    Filed: April 19, 2012
    Date of Patent: November 5, 2013
    Assignee: Iscar, Ltd.
    Inventor: Gil Hecht
  • Patent number: 8573899
    Abstract: A tool holder has an apparatus for clamping a cutting insert thereto. The tool holder has a cutting insert pocket and a mounting bore; a clamp lever including a clamp portion and a lever portion placed in the mounting bore; and a fixing screw. The fixing screw is fastened through a hole which extends downwardly from a side wall of the tool holder to the mounting bore. One end of the fixing screw further includes a pressure-applying surface substantially perpendicular to the rotational axis of the fixing screw, and the side surface of the lever portion of the clamp lever has an inclined surface which makes contact with the pressure-applying surface of the fixing screw. According to the clamping apparatus, the cutting insert can be firmly clamped to the tool holder.
    Type: Grant
    Filed: December 31, 2009
    Date of Patent: November 5, 2013
    Assignee: TaeguTec, Ltd.
    Inventors: Hong Sik Park, Sung Hyup Park
  • Publication number: 20130279997
    Abstract: A tool holder includes an insert pocket having a support surface with a pocket recess occupied by a lever pin, and a fastening member. A head portion of the lever pin has a lever head rear contact surface, located above the support surface, for pressing against a bore of a cutting insert in the insert pocket. The fastening member engages a threaded recess which extends from the pocket recess along a threaded recess axis. The fastening member includes a guiding prong, located within a blind hole in the front of the lever pin. A clamping contact surface of the fastening member is adjacent to a lever front contact surface of the lever pin. A first longitudinal distance, between the lever rear contact surface and the lever front contact surface, is smaller than a second longitudinal distance, between the lever front contact surface and a lever rear contact surface.
    Type: Application
    Filed: April 19, 2012
    Publication date: October 24, 2013
    Applicant: Iscar, Ltd.
    Inventor: Gil Hecht
  • Patent number: 8511944
    Abstract: A clamping device for removably securing a cutting insert in a tool holder used in turning and milling operations, where the clamping device comprises a clamping lever and an actuating member. The clamping lever includes a first and second limb extending from a central elbow, the first limb having a clamping end portion with two independently resilient clamping fingers separated by a clamping slot and the second limb being operatively connected to the actuating member. Each of the independently resilient clamping fingers has a resilience axis of rotation and an upper clamping zone in clamping contact with the cutting insert, where the resilience axes of rotation are generally parallel to the slot width of the clamping slot.
    Type: Grant
    Filed: September 22, 2011
    Date of Patent: August 20, 2013
    Assignee: Iscar, Ltd.
    Inventors: Gil Hecht, Danny Chen
  • Publication number: 20120082522
    Abstract: A clamping device for removably securing a cutting insert in a tool holder used in turning and milling operations, where the clamping device comprises a clamping lever and an actuating member. The clamping lever includes a first and second limb extending from a central elbow, the first limb having a clamping end portion with two independently resilient clamping fingers separated by a clamping slot and the second limb being operatively connected to the actuating member. Each of the independently resilient clamping fingers has a resilience axis of rotation and an upper clamping zone in clamping contact with the cutting insert, where the resilience axes of rotation are generally parallel to the slot width of the clamping slot.
    Type: Application
    Filed: September 22, 2011
    Publication date: April 5, 2012
    Applicant: Iscar Ltd.
    Inventors: Gil Hecht, Danny Chen
  • Patent number: 8057131
    Abstract: A clamping tool holder includes a tool holder body and a clamp for clamping a cutting insert. The clamp causes the cutting insert to press against the bottom and the side walls of an insert-receiving pocket of the tool holder body. The tool holder body has an inclined surface sloping inward in a direction away from the insert-receiving pocket. The clamp has an inclined surface that acts as a ramp with the inclined surface of the tool holder body. When a clamp screw is tightened, a nub of the clamp engages only an inside rearward surface of a mounting bore of the insert along a line of contact and exerts a force downward and rearward on the insert. In addition, only a forward lower face of a head portion the clamp screw engages a top surface of the clamp.
    Type: Grant
    Filed: January 17, 2009
    Date of Patent: November 15, 2011
    Assignee: Kennametal Inc.
    Inventors: Charles Lisle Conway, Michael Glenn Morrison, Lance David Brunetto
  • Patent number: 7959383
    Abstract: The present invention provides a cutting insert and a cutting tool used with the same. A tool body includes at least one seating surface and a threaded hole extending as slanted with respect to the seating surface. At least one cutting insert having a mounting hole passing therethrough is removably secured on the seating surface. A screw passes through the mounting hole and is fastened to the threaded hole, thereby removably securing the cutting insert to the tool body. A wall surface of the mounting hole contacts a head of the screw about at least one first contact portion and at least one second contact portion. The first contact portion is formed at a level different from that of the second contact portion along a longitudinal axis of the mounting hole. Contact angles at the first contact portions and the second contact portions are different from each other.
    Type: Grant
    Filed: September 6, 2006
    Date of Patent: June 14, 2011
    Assignee: Taegutec Ltd.
    Inventors: Chang Hee Choi, Chang Gyu Park
  • Patent number: 7806632
    Abstract: The clamping assembly includes a cutting insert with a lower passage housing a screw with a head for clamping the cutting insert against a bearing surface provided on a tool holder and comprising a screwing hole, wherein the screw head is shaped and arranged so as to press only on one side, with a flared opening, of the screw hole, the passage has a template incompatible with a template of the head in the clamping position, and, outside of the clamping, the cutting insert and the screw can change mutually relative positions so as to harmonize the two templates and thus release the cutting insert without having to entirely unscrew the screw.
    Type: Grant
    Filed: October 14, 2005
    Date of Patent: October 5, 2010
    Assignee: Safety Production
    Inventor: Richard Fouquer
  • Publication number: 20100183385
    Abstract: A clamping tool holder includes a tool holder body and a clamp for clamping a cutting insert. The clamp causes the cutting insert to press against the bottom and the side walls of an insert-receiving pocket of the tool holder body. The tool holder body has an inclined surface sloping inward in a direction away from the insert-receiving pocket. The clamp has an inclined surface that acts as a ramp with the inclined surface of the tool holder body. When a clamp screw is tightened, a nub of the clamp engages only an inside rearward surface of a mounting bore of the insert along a line of contact and exerts a force downward and rearward on the insert. In addition, only a forward lower face of a head portion the clamp screw engages a top surface of the clamp.
    Type: Application
    Filed: January 17, 2009
    Publication date: July 22, 2010
    Applicant: KENNAMETAL INC.
    Inventors: Charles Lisle Conway, Michael Glenn Morrison, Lance David Brunetto
  • Publication number: 20100135735
    Abstract: A clamping mechanism clamps a cutting insert in a tool body. The clamping mechanism has a clamping arm seated within a clamping arm pocket. The clamping arm includes a clamping protrusion extending rearwardly from a rear surface of the clamping arm. The cutting insert has a bore having an insert retaining surface and is seated within an insert pocket. Upon tightening the clamping arm into the tool body, the clamping protrusion presses against the insert retaining surface and the cutting insert is securely abutted within the insert pocket.
    Type: Application
    Filed: November 5, 2009
    Publication date: June 3, 2010
    Applicant: Iscar, Ltd.
    Inventors: Amir SATRAN, Evgeny TULCHINSKY, Alexander KOIFMAN
  • Patent number: 7600453
    Abstract: A tool for refinishing a workpiece such as a brake drum includes an arm for a user to grasp the refinishing tool during operation. A pivotal swivel member is connectable to the arm. The swivel member is formed with an asymmetrical shoulder for compressively and rigidly fixing the swivel member and arm in a fixed linear alignment coincident with a longitudinal axis through the arm and swivel member during a refinishing operation. The asymmetrical shoulder also orients the swivel member in any angular position within a continuous range between zero degrees and forty-five degrees in one direction from the fixed linear alignment. A coupler is formed in the arm and in the swivel member to removably connect the swivel member and the arm. A plurality of demountable locking devices is included for variably positioning the swivel member in relation to the arm. A cutter is detachably mountable on the swivel member, and is adapted to refinish the rotating workpiece on a lathe.
    Type: Grant
    Filed: September 6, 2006
    Date of Patent: October 13, 2009
    Assignee: Sun Systems, Inc.
    Inventor: Kenneth Turos
  • Patent number: 7547163
    Abstract: A clamping tool holder includes a tool holder body and a clamp for clamping a cutting insert. The clamp causes the cutting insert to press against the bottom and the side walls of an insert-receiving pocket of the tool holder body. The tool holder body has an inclined surface sloping inward in a direction away from the insert-receiving pocket. The clamp has an inclined surface that acts as a ramp with the inclined surface of the tool holder body. A guide pin prevents the clamp from twisting during tightening or loosening of the clamp. When a clamp screw is tightened, a nub of the clamp engages only an inside rearward surface of a mounting bore of the insert along a line of contact and the top surface of the cutting insert. In addition, only a forward lower face of a head portion of the clamp screw engages a top surface of the clamp.
    Type: Grant
    Filed: July 16, 2007
    Date of Patent: June 16, 2009
    Assignee: Kennametal Inc.
    Inventors: Michael G. Morrison, Lance D. Brunetto, Charles Lisle Conway
  • Publication number: 20090022553
    Abstract: A clamping tool holder includes a tool holder body and a clamp for clamping a cutting insert. The clamp causes the cutting insert to press against the bottom and the side walls of an insert-receiving pocket of the tool holder body. The tool holder body has an inclined surface sloping inward in a direction away from the insert-receiving pocket. The clamp has an inclined surface that acts as a ramp with the inclined surface of the tool holder body. A guide pin prevents the clamp from twisting during tightening or loosening of the clamp. When a clamp screw is tightened, a nub of the clamp engages only an inside rearward surface of a mounting bore of the insert along a line of contact and the top surface of the cutting insert. In addition, only a forward lower face of a head portion of the clamp screw engages a top surface of the clamp.
    Type: Application
    Filed: July 16, 2007
    Publication date: January 22, 2009
    Inventors: Michael G. Morrison, Lance D. Brunetto, Charles Lisle Conway
  • Patent number: 7347650
    Abstract: A cutting tool for chip removing including a cutting insert provided with a through hole, a J shaped locking pin actuated by a locking screw, and a tool holder having means to receive the cutting insert, the locking screw and the locking pin. The cutting insert is positioned in place by passing its hole over the clamping head of the locking pin and is securely locked into the tool holder's receiving pocket in both horizontally and vertically directions. For some embodiments the insert is clamped due to a simultaneous tilting and downward sliding movement of the locking pin while for other embodiments the insert is clamped due to both a horizontal and a vertical force which are components of a pulling force applied by the locking pin. A shim can be installed by passing its hole over the lower end of the locking pin and it is secured in place by the means of a collar that is provided by the locking pin.
    Type: Grant
    Filed: October 17, 2005
    Date of Patent: March 25, 2008
    Inventor: Vichente Tipu
  • Patent number: 7261495
    Abstract: An assembly for retaining a cutting insert in a pocket of a tool holder includes a locking pin, a spring disposed in the bore of the tool holder, a locking plate disposed in the bore between the spring and the locking pin, and a set screw for retaining the assembly. The locking plate is biased against a ledge of the bore to cause the locking pin to draw and retain the cutting insert in a direction such that the cutting insert is held in a secured position against the pocket of the tool holder. To release the cutting insert, a force is applied to the assembly to counteract the biasing force of the spring. The locking pin or the locking plate may include a flat surface that cooperates with a flat surface on the bore to act as a key to proper orientate the assembly in the bore.
    Type: Grant
    Filed: February 21, 2006
    Date of Patent: August 28, 2007
    Assignee: Kennametal Inc.
    Inventors: Joseph V. Nelson, James R. Kasperik, Timothy G. Friedline
  • Patent number: 7121771
    Abstract: A tool for chip-removing machining includes an insert holder, a cutting insert for chip-removing machining, and a fixing element for fixing the cutting insert in an insert seat of the insert holder. The insert has fingers projecting from a bottom side of the insert. The insert seat has a number of elastically flexible portions forming recesses therebetween which receive respective fingers of the insert. Contact surfaces of the fingers engage respective contact surfaces of the flexible portions to cause the flexible portions to flex elastically as the fingers become wedgingly secured in the recesses.
    Type: Grant
    Filed: May 23, 2003
    Date of Patent: October 17, 2006
    Assignee: Sandvik Intellectual Property AB
    Inventor: Kjell Englund
  • Patent number: 6773210
    Abstract: An apparatus and method for clamping an insert in a tool holder includes a recess and a clamp pin with a lever portion having a curved surface at each end thereof. The recess includes an angled wall for engaging one of the curved surfaces of the lever portion. A wedge portion is disposed within the recess and operatively coupled to a lock screw such that rotation of the lock screw causes movement of the wedge portion in a first direction. A biasing force is applied to the lever portion to cause the clamp pin to move in a second direction that is different than the first direction. The wedge portion includes one or more angled walls for engaging one of the curved surfaces of the lever portion. Movement of the wedge portion in the first direction causes the angled wall of the recess to act as a cam surface to cause the clamp pin to pivot about a pivot point, P, located along a central axis of the clamp pin.
    Type: Grant
    Filed: October 28, 2002
    Date of Patent: August 10, 2004
    Assignee: Kennametal, Inc.
    Inventor: Robert A. Erickson
  • Patent number: 6682273
    Abstract: A cutting insert is clamped in a pocket of a holder by a top clamp assembly which includes a clamp arm screwed to the holder, and a clamp plate interposed between the insert and a front part of the clamp arm. The clamp plate is formed of a harder and more wear-resistant material than the clamp arm and transmits clamping forces from the clamp arm to the cutting insert. The hard clamp plate shields the clamp arm from being impacted by chips generated during a machining operation, thereby minimizing wearing of the clamp arm.
    Type: Grant
    Filed: April 10, 2002
    Date of Patent: January 27, 2004
    Assignee: Sandvik AB
    Inventors: Sture Sjöö, Per Hansson
  • Patent number: 6599060
    Abstract: A cutting tool comprising a holder and a cutting insert mounted therein. A second bore of the holder extends downwardly from an insert receiving pocket. A third bore extends rearwardly from the second bore and opens into a fourth bore. A locking pin inserted in the second bore protrudes upwardly into the first through bore. A protrusion extends rearwardly from an upper portion of the locking pin. A rearwardly facing groove in a lower portion of the locking pin is co-aligned with the third bore. A plunger is received in the third bore. A forward portion of the plunger is in contact engagement with the groove. A rear portion of the plunger has a first engagement surface transversely directed to a first axis (A) of the plunger. A clamping member, engaged in the fourth bore and having a second engagement surface, is in contact engagement with the first engagement surface.
    Type: Grant
    Filed: July 29, 2002
    Date of Patent: July 29, 2003
    Assignee: Iscar, Ltd.
    Inventor: Gil Hecht
  • Patent number: 6558087
    Abstract: A machine tool, which is also suitable for high-speed machining in metal cutting, for which at least one cutting body is held by a clamping device in a plate seat of a tool holder, which is bounded only by a back pressure supporting surface and by a supporting surface, the supporting surface for the clamping device and the supporting surface of the plate seat enclosing an angle, which exceeds the automatic interlocking and opens up to the back pressure supporting surface, wherein the cutting body is provided with a groove, which is engaged by a sliding pin, the diameter of which corresponds essentially to the width of the groove and which is disposed eccentrically and parallel to the axis of rotation of the bearing bolt, which is mounted rotatably in a bearing opening of the tool holder, passing through the supporting surface and/or the back pressure supporting surface, and which can be actuated from the outside.
    Type: Grant
    Filed: July 6, 2001
    Date of Patent: May 6, 2003
    Inventor: Hans-Peter Hollfelder
  • Publication number: 20030031519
    Abstract: A cutting tool comprising a holder and a cutting insert mounted therein. A second bore of the holder extends downwardly from an insert receiving pocket. A third bore extends rearwardly from the second bore and opens into a fourth bore. A locking pin inserted in the second bore protrudes upwardly into the first through bore. A protrusion extends rearwardly from an upper portion of the locking pin. A rearwardly facing groove in a lower portion of the locking pin is co-aligned with the third bore. A plunger is received in the third bore. A forward portion of the plunger is in contact engagement with the groove. A rear portion of the plunger has a first engagement surface transversely directed to a first axis (A) of the plunger. A clamping member, engaged in the fourth bore and having a second engagement surface, is in contact engagement with the first engagement surface.
    Type: Application
    Filed: July 29, 2002
    Publication date: February 13, 2003
    Inventor: Gil Hecht
  • Patent number: 6457914
    Abstract: A clamping tool holder includes a tool holder body and a clamp for clamping a cutting insert. The clamp causes the cutting insert to press against the bottom and the side walls of an insert-receiving pocket of the tool holder body. The tool holder body has an inclined surface sloping inward in a direction away from the insert-receiving pocket. The clamp has a sliding face that acts as a ramp with the inclined surface of the tool holder body. A guide pin prevents the clamp from twisting during tightening or loosening of the clamp. When a clamp screw is tightened, the clamp only engages an inside rearward surface of the mounting hole and the rearward top surface of the cutting insert.
    Type: Grant
    Filed: August 24, 2000
    Date of Patent: October 1, 2002
    Assignee: Kennametal Inc.
    Inventors: Linn R. Andras, Lee E. Yothers
  • Publication number: 20020131830
    Abstract: A cutting insert is clamped in a pocket of a holder by a top clamp assembly which includes a clamp arm screwed to the holder, and a clamp plate interposed between the insert and a front part of the clamp arm. The clamp plate is formed of a harder and more wear-resistant material than the clamp arm and transmits clamping forces from the clamp arm to the cutting insert. The hard clamp plate shields the clamp arm from being impacted by chips generated during a machining operation, thereby minimizing wearing of the clamp arm.
    Type: Application
    Filed: April 10, 2002
    Publication date: September 19, 2002
    Inventors: Sture Sjoo, Per Hansson
  • Patent number: 6394709
    Abstract: A cutting insert is clamped in a pocket of a holder by a top clamp assembly which includes a clamp arm screwed to the holder, and a clamp plate interposed between the insert and a front part of the clamp arm. The clamp plate is formed of a harder and more wear-resistant material than the clamp arm and transmits clamping forces from the clamp arm to the cutting insert. The hard clamp plate shields the clamp arm from being impacted by chips generated during a machining operation, thereby minimizing wearing of the clamp arm.
    Type: Grant
    Filed: April 26, 2000
    Date of Patent: May 28, 2002
    Assignee: Sandvik AB
    Inventors: Sture Sj{umlaut over (oo)}, Per Hansson
  • Patent number: 6379087
    Abstract: A cutting insert has a central cavity with a plurality of pairs of clamping surfaces wherein the clamping surfaces of a pair are separated from one another by a recess to provide split face clamping surfaces within the cavity of the insert. The insert may be secured within the pocket of a toolholder.
    Type: Grant
    Filed: February 7, 2000
    Date of Patent: April 30, 2002
    Assignee: Kennametal Inc.
    Inventor: William M. Alexander, IV
  • Patent number: 6190095
    Abstract: A cutting insert toolholder for easy indexing in areas of limited access. In an outer end of the toolholder runs a through channel in which a bent bolt is inserted. The channel extends through the toolholder and is open at an outer end of the toolholder.
    Type: Grant
    Filed: May 5, 1999
    Date of Patent: February 20, 2001
    Inventor: Erik Schmidt
  • Patent number: 6155754
    Abstract: A device for the clamping of cutting inserts for cutting metal machining. The device includes a mainly straight locking screw, which is threaded through a through center hole in the cutting insert and is threaded firmly into a threaded boring in a cutting insert seat intended for accommodating the cutting insert. The cutting insert seat is provided in a cutting insert holder body, such as a turning bar, a milling cutter body or a drilling tool. The head of the locking screw is chamfered in at least two places to enable the cutting insert to be stepped over the locking screw head when the screw is screwed upwards a predetermined number of revolutions. Thus, the present invention eliminates the need for the screw having to be detached from the threaded boring in order to remove the cutting insert.
    Type: Grant
    Filed: August 20, 1997
    Date of Patent: December 5, 2000
    Assignee: Sandvik AB
    Inventor: Ivan Jonsson
  • Patent number: 6050751
    Abstract: A cutting insert for chip-breaking metal machining includes an upper chip surface, a lower bottom surface, which is substantially plane parallel with the chip surface, one or several side surfaces that extend between said chip and bottom surfaces, and a through hole (12) for the accomodation of a locking screw (11). The hole (12) includes a rotation-asymmetrical portion (16) including a plurality of radially bulging portions (17) extending in the direction of the hole, the transitions (18) extending substantially in the direction of the hole between adjacent bulging portions being intended to pairwise abutting against the locking screw (11) and guiding the insert towards the right positioning in an insert seat, before the insert is clamped. In this way, it becomes considerably easier to position the cutting insert, particularly when it has a larger number of cutting edges, e.g. six or eight.
    Type: Grant
    Filed: July 21, 1998
    Date of Patent: April 18, 2000
    Assignee: Sandvik AB
    Inventor: Lars Hellstrom
  • Patent number: 6004079
    Abstract: In a cutter head, especially for a profile cutter, with a basic body (1) having at least two recesses (3) uniformly distributed around its circumference, cutter (5) can interchangeably be secured in the recesses by means of a clamping device having at least one clamping component (8) and at least one clamping screw acting therewith and with the basic body (1). In the region of its inner end section, each of the clamping components is supported by the basic body (1) to pivot about an axis parallel to the latter's axis of rotation (12) and pivotable and clampable by means of at least one of the clamping screws (10) by a tensile force generated thereby against a bearing surface (4) of the recess (3).
    Type: Grant
    Filed: January 30, 1995
    Date of Patent: December 21, 1999
    Assignee: Gebruder Leitz GmbH & Co. et al.
    Inventor: Heinrich Kislinger
  • Patent number: 5944457
    Abstract: A toolholder forms a seat in which a cutting insert is seated. The insert is held in place by a clamp having front and rear portions. The front portion engages within a center hole of the insert, and the rear portion engages an inclined surface of the toolholder so that the clamp is pushed downwardly and rearwardly when attached by a screw. A coil spring surrounds the screw and is compressed between the clamp and the toolholder to bias the clamp upwardly. An upper end of the spring is disposed in a bore of the clamp which is inclined relative to the screw, whereby the spring abuts a rear portion of a wall of the bore to bias the clamp rearwardly as well as upwardly.
    Type: Grant
    Filed: December 9, 1997
    Date of Patent: August 31, 1999
    Assignee: Sandvik Aktiebolag
    Inventor: Eric Tjernstrom
  • Patent number: 5938377
    Abstract: The present invention relates to a tool for chip removal including a holder and a cutting insert provided with a through-hole to abut against a base surface and support surfaces in a cutting insert pocket in the holder. A locking pin threaded into a boring in the holder is received by the insert hole. The pin includes a head, a waist, a conical portion, and a threaded portion, which pin portions have a common center axis in an unloaded condition. The locking pin is of a quick action type. The boring includes an eccentric conical recess provided to displace the cutting insert in a direction towards the support surfaces in cooperation with the pin during tightening of the pin in the threaded part of the boring. The pin is provided to be able to secure both negative and positive cutting inserts in the insert pocket, by the head and the waist at a final phase of the pin tightening provided to elastically bend in a direction from the support surfaces.
    Type: Grant
    Filed: April 18, 1997
    Date of Patent: August 17, 1999
    Assignee: Seco Tools AB
    Inventors: Jonas Jordberg, Mikael Jansson
  • Patent number: 5681133
    Abstract: A form insert toolholder assembly including a toolholder having a base. The base includes a base inclined surface having an outer edge and an inner edge. The base further includes a clamp receiving portion having top wall, a first side wall and a second side wall. The top wall defines a clamp receiving portion opening. The inner edge and the first side wall define an insert pocket. A pin is positioned on the base inclined surface between the outer edge and the inner edge. The assembly further includes a clamp having an upper surface and a lower surface. The clamp defines a clamp opening extending from the upper surface to the lower surface. The lower surface has a clamp inclined surface that is parallel to the base inclined surface. The assembly further includes an insert having a cutting edge, a mounting edge, a first end, a second end, a base surface and a clamp surface.
    Type: Grant
    Filed: October 17, 1995
    Date of Patent: October 28, 1997
    Assignee: Aeroquip Corporation
    Inventor: Timothy A. Hibiske
  • Patent number: 5669742
    Abstract: A tool holder has a insert-support surface and a wedge-support surface. A pin projects upwardly from the insert-support surface and enters a through-hole of a cutting insert that is seated on the insert-support surface. The wedge-support surface includes a front portion disposed adjacent the insert-support surface and a rear portion extending upwardly from the front portion at an inclination. A wedge contacts both of the front and rear portions and is secured by a fastening screw which passes through the wedge and enters the front portion. The wedge includes a front insert-engaging bulge, and a lower heel which contacts the front portion and defines a pivot axis which is located closer to the pin than is the bulge. Upon tightening of the screw, the wedge is (a) pushed toward the insert by the rear portion of the wedge-support surface to push the insert against the pin, and (b) caused to pivot about the pivot axis in a direction producing a slight downward movement of the bulge.
    Type: Grant
    Filed: April 10, 1996
    Date of Patent: September 23, 1997
    Assignee: Sandvik Aktiebolag
    Inventors: Sture Sjoo, H.ang.kan Ericksson
  • Patent number: 5586844
    Abstract: A toolholder for indexable cutting inserts includes a holder body forming an insert site. A pin projects upwardly at the insert site for entering a center hole of an insert. A clamping wedge is attached to the body by a screw. A rear end of the wedge engages an inclined supporting surface of the body, and a front end of the wedge engages the insert. By tightening the screw, the front end of the wedge pushes against the insert simultaneously downwardly and forwardly to press the insert against the pin and a floor of the insert site. The front end of the wedge includes a pair of forwardly projecting upper protrusions for engaging the top face of the insert, and a pair of forwardly projecting lower protrusions for engaging an edge face of the insert. The upper protrusions, and also the lower protrusions are disposed on opposite sides of an imaginary plane which contains the axis of the pin and the axis of the clamping screw.
    Type: Grant
    Filed: February 24, 1995
    Date of Patent: December 24, 1996
    Assignee: Sandvik AB
    Inventor: Folke Nyman
  • Patent number: 5536120
    Abstract: A tool holder having an insert comprising a body having a first end adapted for connection to a cutting tool machine and a second end for receiving and clamping the insert. The second end includes an insert receiving surface on which the insert is received. The tool holder includes a clamp rotatably connected to the body adjacent the insert receiving surface, wherein the clamp has means for adjustably rotating the clamp to engage the insert and hold the insert in place.
    Type: Grant
    Filed: May 11, 1994
    Date of Patent: July 16, 1996
    Inventor: Arthur W. Miller
  • Patent number: 5199828
    Abstract: A cutting insert is mounted on a holder by means of a locking screw which enables inserts to be exchanged without completely removing the screw from the holder. The insert has a through-hole configured such that a lower end thereof is of cylindrical configuration and includes a tapered section located thereabove. The tapered section expands in cross-section in an upward direction. The locking screw includes a head, the outer surface of which engages the through-hole at diametrically opposite contact locations and imposes a downward force on the insert at each contact location. In one embodiment, the head includes cylindrical surface portions which engage the through-hole at both contact locations. In another embodiment, the head includes a surface expanding in cross-section in an upward direction which engages the through-hole at both contact locations.
    Type: Grant
    Filed: November 19, 1991
    Date of Patent: April 6, 1993
    Assignee: Seco Tools AB
    Inventors: Karl-Erik Forsberg, Mikael Jansson
  • Patent number: 5167473
    Abstract: A unidirectional insert lock for securing an insert, with a central mounting hole, to a pocket in a cutting tool is provided. The insert lock includes a locking pin having an eccentric and a radially extending lobe, and a shim having an arcuate channel angularly bordered by a first and second stop, that is configured to receive the lobe. The locking pin is inserted through holes in both the insert and the shim so that when the lobe is rotated in one direction the eccentric urges the insert into a secured cutting position within the pocket. However, when the lobe is rotated in the opposite direction the second stop prevents the pin from sufficiently rotating so that the eccentric is not able to urge the insert against the sides of the pocket, and consequently, the insert sits loosely in the pocket so that it is clear to the operator that the insert is not secured in the cutting position.
    Type: Grant
    Filed: June 24, 1991
    Date of Patent: December 1, 1992
    Assignee: Allied-Signal Inc.
    Inventor: Michael J. Barnett