Patents Represented by Attorney, Agent or Law Firm Larry R. Meenan
  • Patent number: 8348558
    Abstract: The invention relates to a cutting insert having an essentially parallelepiped-shaped basic body with two larger spaced-apart longitudinal surfaces (10,11) which are connected to one another by two smaller transverse surfaces (12, 13) and two smaller longitudinal surfaces (14) designed as rake faces, wherein the smaller longitudinal surfaces (14) form with the adjacent surfaces a respective, encircling, closed cutting line which forms the cutting edges and rounded-off cutting corners, and the larger longitudinal surface (10, 11) merges on both sides via respective rounded-off edges into the smaller transverse surface (12, 13), and one of the rounded-off cutting corners is designed so as to project relative to a basic shape which is determined by the cutting lines, on both sides, of the larger longitudinal surfaces (10, 11) with the smaller longitudinal surfaces (14).
    Type: Grant
    Filed: August 22, 2006
    Date of Patent: January 8, 2013
    Assignee: Kennametal Widia Produktions GmbH & Co.KG
    Inventors: Jürgen Thomas Bär, Jochen Hecht
  • Patent number: 8328471
    Abstract: A metalcutting insert that is useful in chipforming and material removal from a workpiece The metalcutting insert includes a metalcutting insert body, which includes a cutting edge having at least one discrete cutting location. The metalcutting insert body further contains a distinct interior coolant passage communicating with the discrete cutting location. The distinct interior coolant passage has a coolant passage inlet defining a coolant passage inlet cross-sectional area, a coolant passage discharge defining a coolant passage discharge cross-sectional area, and an axial coolant passage length. The distinct interior coolant passage defines a coolant flow cross-sectional area along the axial coolant passage length thereof. The coolant passage inlet cross-sectional area is substantially the same as the coolant passage discharge cross-sectional area. The geometry of the coolant flow area changes along the axial coolant passage length.
    Type: Grant
    Filed: June 9, 2010
    Date of Patent: December 11, 2012
    Assignee: Kennametal Inc.
    Inventors: Joseph Nelson, Linn Andras, Thomas Muller, Paul Prichard, Brad Hoffer
  • Patent number: 8317435
    Abstract: The invention relates to a cutting insert for clamping into a disc-type or strip-shaped tool body, in particular, for milling crankshafts, whereby the insert is substantially cuboid-shaped and has two front faces, two side faces, serving as cutting faces as well as an upper and a lower side face, whereby a convex face is arranged between the front faces and the upper and lower side faces, so that the upper and lower side faces and the convex face form cutting edges each with a side face. According to invention, the cutting insert has an inwardly-tapered face adjoining the convex face, which allows the cutting edge to protrude and tapered chamfers are provided between the inwardly-tapered faces of the front face on both sides of a planar supporting surface to the outer edge.
    Type: Grant
    Filed: April 4, 2006
    Date of Patent: November 27, 2012
    Assignee: Kennametal Widia Produktions GmbH & Co., KG
    Inventors: Markus Heinloth, Jürgen Bär, Martin Hausmann, Carsten Schwaner
  • Patent number: 8316742
    Abstract: A system manages a machine tool operation. The system includes a cutting tool, which includes a tool body; an integrated circuit chip securely mounted within the tool body and capable of being read and written upon; and a read/write device for communicating with the integrated circuit chip. The integrated circuit chip is an RFID chip. The tool body may be a mounting chuck, adapter, twist drill, thread tap, indexable drill, milling cutter or a square shank lathe tool.
    Type: Grant
    Filed: December 10, 2008
    Date of Patent: November 27, 2012
    Assignee: Kennametal Inc.
    Inventors: Karen Anne Craig, Thomas O. Muller, Timothy E. Fara, Bernard North
  • Patent number: 8317438
    Abstract: A twist drill having at least two cutting inserts at the tip each with its own J-shaped chip guiding flute and a method for the production thereof.
    Type: Grant
    Filed: April 10, 2009
    Date of Patent: November 27, 2012
    Assignee: Kennametal Inc.
    Inventor: Peter Karl Mergenthaler
  • Patent number: 8312615
    Abstract: A toolholder connector having one threaded end and one end with a male quick change portion is threadingly engaged with a first toolholder having a threaded bore. The quick change connector also has a male quick change portion that is engaged within a side activated receiver of a second toolholder. Prior to activating the receiver, an alignment pin associated with the first toolholder is lined up with alignment slot associated with the second toolholder such that when the two are brought together, a pre-determined radial alignment will be retained.
    Type: Grant
    Filed: November 25, 2009
    Date of Patent: November 20, 2012
    Assignee: Kennametal Inc.
    Inventor: Ruy Frota de Souza Filho
  • Patent number: 8297890
    Abstract: The invention relates to a cutter support (11) for fastening to a cutter head, comprising a shaft-like pin (11) and a head, having a soldered-in cutter (12) with a minor cutting edge formed by a face (27) and a free surface (28). According to the invention the minor cutting edge has a rounded area (25), the radius of which continuously increases from a minor cutting edge end (25a) at least to the cutting edge center, or to the other minor cutting edge end (25b).
    Type: Grant
    Filed: January 22, 2008
    Date of Patent: October 30, 2012
    Assignee: Kennametal Inc.
    Inventors: Markus Heinloth, Ralf Kloetzer, Helmut Klein
  • Patent number: 8282320
    Abstract: The invention relates to an eight-edged rotatable and reversible cutting insert having two opposite, substantially square base surfaces which are twisted relative to one another about a central axis running perpendicularly to said base surfaces, and having four identical side surfaces, wherein a main lip is formed between each base surface and each side surface. A bearing surface is formed between two chip grooves which extend along the associated main lip of the respective side surface, said bearing surface extending symmetrically beyond the groove ends of the adjacent chip groove and transversely to the main lips until its adjoins the latter.
    Type: Grant
    Filed: February 2, 2008
    Date of Patent: October 9, 2012
    Assignee: Kennametal Inc.
    Inventors: Rudi Hartlohner, Igor Kaufmann
  • Patent number: 8277153
    Abstract: A combination of a cutting insert and a shim. The cutting insert and shim have two opposing end surfaces with two identical opposing major side surfaces and two identical opposing minor side surfaces extending between the minor side surfaces. Each end surface of the insert has two lowered abutment members, each having a shim abutment surface for contacting the shim. One end surface of the shim has two raised abutment members, each having an insert abutment surface for contacting the insert. The abutment surfaces contact each other in an area where high cutting forces occur so as to help distribute the loads encountered in the cutting operation, as well as provide protection of the insert pocket in case of insert failure.
    Type: Grant
    Filed: December 2, 2009
    Date of Patent: October 2, 2012
    Assignee: Kennametal Inc.
    Inventors: Jeffrey Francis Kovac, Kumar Reddy Mylavaram Nikhilesh
  • Patent number: 8256998
    Abstract: A metal cutting system with a tool holder, a shim, an insert with a top depression, a top piece and a clamp. A rake face cooling channel for fluid delivery is formed between the top piece and the depression in the insert. A primary discharge slot at the end of the rake face cooling channel delivers fluid from below the cutting edge of the insert. A second cooling channel for delivery of fluid to the flank face is formed between the insert and the shim or is formed between the shim and the tool holder with a portion of the cooling channel passing through the shim.
    Type: Grant
    Filed: August 30, 2011
    Date of Patent: September 4, 2012
    Assignee: Kennametal Inc.
    Inventors: Paul D. Prichard, Linn R. Andras, Ted R. Massa
  • Patent number: 8256999
    Abstract: A metal cutting system with a tool holder, a shim, an insert with a top depression, a top piece and a clamp. A rake face cooling channel for fluid delivery is formed between the top piece and the depression in the insert. A primary discharge slot at the end of the rake face cooling channel delivers fluid from below the cutting edge of the insert. A second cooling channel for delivery of fluid to the flank face is formed between the insert and the shim or is formed between the shim and the tool holder with a portion of the cooling channel passing through the shim.
    Type: Grant
    Filed: November 8, 2011
    Date of Patent: September 4, 2012
    Assignee: Kennametal Inc.
    Inventors: Paul D. Prichard, Linn R. Andras, Ted R. Massa
  • Patent number: 8257003
    Abstract: A side actuated collet lock mechanism includes a collet; a drawbar at least partially disposed within the collet, and a pair of wedge members threadingly received onto each end of a double-ended drive screw. The drive screw is rotated to cause the wedge members to move downward such that a first cam surface engages the drawbar. The drawbar and collet are pulled into the tool holder and firmly secure the shank. To remove the shank, the drive screw is rotated in an opposite direction to cause the wedge members to move upward such that a second cam surface engages the drawbar. The drawbar and the collet are pushed out from the toolholder, thereby releasing the shank.
    Type: Grant
    Filed: December 5, 2008
    Date of Patent: September 4, 2012
    Assignee: Kennametal Inc.
    Inventors: Michael R. McCormick, Filho Ruy Frota de Souza
  • Patent number: 8251621
    Abstract: A device for supplying coolant into a shank of a rotary tool as well as a rotary tool, in particular a drill. The abstract of the disclosure is submitted herewith as required by 37 C.F.R. §1.72(b). As stated in 37 C.F.R. §1.72(b): A brief abstract of the technical disclosure in the specification must commence on a separate sheet, preferably following the claims, under the heading “Abstract of the Disclosure.” The purpose of the abstract is to enable the Patent and Trademark Office and the public generally to determine quickly from a cursory inspection the nature and gist of the technical disclosure. The abstract shall not be used for interpreting the scope of the claims. Therefore, any statements made relating to the abstract are not intended to limit the claims in any manner and should not be interpreted as limiting the claims in any manner.
    Type: Grant
    Filed: April 11, 2008
    Date of Patent: August 28, 2012
    Assignee: Kennametal Inc.
    Inventor: Dirk Kammermeier
  • Patent number: 8234958
    Abstract: A toolholder with a controllable critical angle, such as a lead, trailing, rake or clearance angles, includes a tool spindle for retaining the toolholder in a tool rest of a machine tool. The machine tool includes at least one linear axis, for example, three mutually perpendicular axes, a rotary axis and a rotation axis. The rotary axis and/or rotation axis is controllable to move to a specified position in synchronization with a movement of one of the linear axes. An adaptor supports a cutting tool that is retained in the adaptor by a clamp. The cutting tool defines a critical angle, such as a lead angle, a trailing angle, a rake angle and a flank clearance angle, wherein the critical angle is corrected as a vector of movement of at least one of the linear axis is changed. In addition, the cutting tool can be positioned on opposite side of a centerline of rotation of the workpiece to effectively double the life of the cutting tool. A method of controlling a toolholder is also disclosed.
    Type: Grant
    Filed: July 8, 2008
    Date of Patent: August 7, 2012
    Assignee: Kennametal Inc.
    Inventors: Gregory A. Hyatt, Ted R. Massa, Linn R. Andras, James J. Stohr
  • Patent number: 8220804
    Abstract: An apparatus for releasably holding a tubular toolholder shank by axially reciprocating a lock rod between a locked and unlocked position. Compression balls following a helical path on a torque nut are used to retract a compression sleeve, which in turn compresses springs against the lock rod to move the lock rod into the locked position. As a result, a repeatable lock rod force is possible with a pre-determined and self limiting rotation of the torque nut. The same helical groove may be used to advance the compression sleeve against the lock rod to urge the toolholder from the base member.
    Type: Grant
    Filed: February 5, 2009
    Date of Patent: July 17, 2012
    Assignee: Kennametal Inc.
    Inventors: Robert A. Erickson, Carla Erickson, legal representative
  • Patent number: 8221036
    Abstract: A chatter-resistant end mill and a method of making such an end mill, in which the teeth of the end mill are unequally spaced apart to substantially reduce or eliminate vibrations produced during cutting of a work piece.
    Type: Grant
    Filed: August 6, 2007
    Date of Patent: July 17, 2012
    Assignee: Hanita Metal Works, Ltd.
    Inventors: Vladimir Volokh, Sergei Boulakhov, Leonid Sharivker, Shay Zeidner, Vladimir Galipko
  • Patent number: 8210779
    Abstract: A cutting tap includes a body having an axial forward end and an axial rearward end and a central longitudinal axis. The body has a fluted section at the axial forward end. The fluted section includes a chamfered fluted section extending from the axial forward end of the body and terminating at a first full cutting thread. The chamfered fluted section includes a first cutting thread located a first distance from the axial forward end of the body, and a second cutting thread located a second distance from the axial forward end of the body. The second distance is greater than the first distance. The chamfered fluted section is shaped such that a thickness of a section of material removed by the second cutting thread is smaller than a thickness of a section of material removed by the first cutting thread. A method of making the cutting tap is also disclosed.
    Type: Grant
    Filed: October 14, 2008
    Date of Patent: July 3, 2012
    Assignee: Kennametal Inc.
    Inventors: Willard E. Henderer, Stephen M. George, Vladimir D. Volokh
  • Patent number: 8202025
    Abstract: A metal cutting system with a tool holder, a shim, an insert with a top depression, a top piece and a clamp. A rake face cooling channel for fluid delivery is formed between the top piece and the depression in the insert. A primary discharge slot at the end of the rake face cooling channel delivers fluid from below the cutting edge of the insert. A second cooling channel for delivery of fluid to the flank face is formed between the insert and the shim or is formed between the shim and the tool holder with a portion of the cooling channel passing through the shim.
    Type: Grant
    Filed: October 7, 2010
    Date of Patent: June 19, 2012
    Assignee: Kennametal Inc.
    Inventors: Paul D. Prichard, Linn R. Andras, Ted R. Massa
  • Patent number: D659729
    Type: Grant
    Filed: June 23, 2010
    Date of Patent: May 15, 2012
    Assignee: Kennametal Inc.
    Inventors: Ruy Frota de Souza Filho, Adam South, Paul Albert Brown
  • Patent number: D673194
    Type: Grant
    Filed: July 11, 2011
    Date of Patent: December 25, 2012
    Assignee: Kennametal Inc.
    Inventors: Jeffrey F. Kovac, Lewis Ray Morrison, Kumar Reddy Mylavaram Nikhilesh, Ravishankar Iyer