Patents by Inventor Ronald Louis Dudzinsky

Ronald Louis Dudzinsky has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20210162516
    Abstract: A rotary cutting tool includes a cutting head having a plurality of insert-receiving pockets for radially mounting a first type of cutting insert in a first cutting region and for tangentially mounting a second type of cutting insert in a second cutting region. The first cutting region has a first length, L1, and the second cutting region has a second length, L2, that is greater in magnitude than the first length, L1. The two types of cutting inserts provides a hybrid cutting insert design in which the first type of cutting inserts provide an increased chip gash volume for effective chip evacuation, and the second type of cutting inserts provide an increased core diameter to minimize deflection of the rotary cutting tool.
    Type: Application
    Filed: December 2, 2019
    Publication date: June 3, 2021
    Applicant: Kennametal Inc.
    Inventors: Lance David Brunetto, Ruy Frota de Souza Filho, Ronald Louis Dudzinsky
  • Patent number: 10525539
    Abstract: A compression milling cutter includes a shank and a front cutting portion that terminates at a leading end of the milling cutter. The front cutting portion has a first circumferential row of one or more insert receiving pockets proximate a leading end of the milling cutter, and a second circumferential row of one or more insert receiving pockets, each insert receiving pocket configured to receive a respective indexable cutting insert. The cutting insert mounted in the first circumferential row has a positive axial rake angle, A, and the indexable cutting insert mounted in an insert pocket of the second circumferential row has a negative axial rake angle, B. Because of the different axial rake angles, chips generated during a machining operation flow in opposite directions, thereby creating a compression zone disposed between the first and second circumferential rows. This compression zone replicates the cutting action of a solid end mill, particularly when machining fiber reinforced plastic materials.
    Type: Grant
    Filed: January 8, 2018
    Date of Patent: January 7, 2020
    Assignee: KENNAMETAL INC.
    Inventors: Joseph Slusarcyk, Thomas J. Long, II, Tim J. Marshall, Ronald Louis Dudzinsky
  • Publication number: 20190210124
    Abstract: A compression milling cutter includes a shank and a front cutting portion that terminates at a leading end of the milling cutter. The front cutting portion has a first circumferential row of one or more insert receiving pockets proximate a leading end of the milling cutter, and a second circumferential row of one or more insert receiving pockets, each insert receiving pocket configured to receive a respective indexable cutting insert. The cutting insert mounted in the first circumferential row has a positive axial rake angle, A, and the indexable cutting insert mounted in an insert pocket of the second circumferential row has a negative axial rake angle, B. Because of the different axial rake angles, chips generated during a machining operation flow in opposite directions, thereby creating a compression zone disposed between the first and second circumferential rows. This compression zone replicates the cutting action of a solid end mill, particularly when machining fiber reinforced plastic materials.
    Type: Application
    Filed: January 8, 2018
    Publication date: July 11, 2019
    Applicant: Kennametal Inc.
    Inventors: Joseph Slusarcyk, Thomas J. Long, II, Tim J. Marshall, Ronald Louis Dudzinsky
  • Patent number: 10035198
    Abstract: A double-sided, indexable cutting insert for a milling cutter includes a first surface, a second surface, and side surfaces. Major cutting edges are defined at an intersection between the first and second surfaces and side surfaces. Minor cutting edges and ramping cutting edges are defined at the intersection between the first and second surfaces and side surfaces. The cutting insert is mounted in a milling cutter having a bottom seating surface formed at an angle with respect to a central, rotational axis of the milling cutter, which provides superior performance for both milling and ramping cutting operations.
    Type: Grant
    Filed: November 15, 2011
    Date of Patent: July 31, 2018
    Assignee: KENNAMETAL INC.
    Inventors: Ronald Louis Dudzinsky, Konrad Spitzenberger
  • Patent number: 9833846
    Abstract: A rotary cutting tool includes a cutter body and a coolant cap removably secured to the cutter body. The coolant cap includes an outer surface, an inner surface and a generally cylindrical outer surface extending between the outer surface and the inner surface. The cylindrical outer surface has a second cylindrical outer surface portion with external threads formed thereon such that the coolant cap is capable of being threaded onto the cutter body.
    Type: Grant
    Filed: August 5, 2014
    Date of Patent: December 5, 2017
    Assignee: KENNAMETAL INC.
    Inventors: James Michael Waggle, Ronald Louis Dudzinsky
  • Patent number: 9764394
    Abstract: A rotary cutting tool includes a cutter body having a head, a shank, and a cavity extending along a central, longitudinal axis of the cutter body. The head includes at least one cutting insert mounted in a pocket adjacent to a chip groove. A stiffening device includes a plurality of slugs with high compressive strength disposed within the cavity, and a first compression screw threaded into a rearward end of the cutting tool. In another embodiment, a second compression screw is threaded into a forward end of the cutter body. In another embodiment, each slug includes a coolant hole, circumferential grooves and axial grooves on its outer diameter, and a plurality of radial grooves on each end, and the first compression screw has a coolant hole for allowing coolant to pass therethrough.
    Type: Grant
    Filed: April 7, 2014
    Date of Patent: September 19, 2017
    Assignee: KENNAMETAL INC.
    Inventors: Kevin Michael Gamble, Ronald Louis Dudzinsky, James Michael Waggle
  • Patent number: 9623497
    Abstract: A rotary cutting tool includes a cutter body, a coolant cap, and a retaining ring for removably securing the coolant cap to the cutter body. The coolant cap includes an outer surface, an inner surface and a generally cylindrical outer surface extending between the outer surface and the inner surface. The retaining ring is disposed within a retaining ring notch of the cutter body such that the outer surface of the coolant cap contacts the retaining ring when high pressure coolant is introduced into the cutter body to removably secure the coolant cap to the cutter body.
    Type: Grant
    Filed: September 11, 2014
    Date of Patent: April 18, 2017
    Assignee: KENNAMETAL INC.
    Inventor: Ronald Louis Dudzinsky
  • Patent number: 9475131
    Abstract: A cutting tool, such as a milling cutter, includes a tool body and a plurality of pockets for receiving cutting inserts. Each pocket includes a bottom support surface, an radial support surface, an axial support surface, a first corner relief between the bottom support surface and the radial support surface, and a first stress relief formed in the first corner relief at one end of the pocket. The first stress relief is formed at an angle with respect to a plane parallel to the radial support surface. The first stress relief reduces a tensile stress of the cutting tool during a machining operation. A second and third stress relief may be formed in the first corner relief and/or in a second corner relief.
    Type: Grant
    Filed: June 13, 2013
    Date of Patent: October 25, 2016
    Assignee: KENNAMETAL INC.
    Inventors: James Michael Waggle, Ronald Louis Dudzinsky
  • Publication number: 20160074948
    Abstract: A rotary cutting tool includes a cutter body, a coolant cap, and a retaining ring for removably securing the coolant cap to the cutter body. The coolant cap includes an outer surface, an inner surface and a generally cylindrical outer surface extending between the outer surface and the inner surface. The retaining ring is disposed within a retaining ring notch of the cutter body such that the outer surface of the coolant cap contacts the retaining ring when high pressure coolant is introduced into the cutter body to removably secure the coolant cap to the cutter body.
    Type: Application
    Filed: September 11, 2014
    Publication date: March 17, 2016
    Applicant: KENNAMETAL INC.
    Inventor: Ronald Louis Dudzinsky
  • Publication number: 20160039016
    Abstract: A rotary cutting tool includes a cutter body and a coolant cap removably secured to the cutter body. The coolant cap includes an outer surface, an inner surface and a generally cylindrical outer surface extending between the outer surface and the inner surface. The cylindrical outer surface has a second cylindrical outer surface portion with external threads formed thereon such that the coolant cap is capable of being threaded onto the cutter body.
    Type: Application
    Filed: August 5, 2014
    Publication date: February 11, 2016
    Applicant: KENNAMETAL INC.
    Inventors: James Michael Waggle, Ronald Louis Dudzinsky
  • Publication number: 20150283628
    Abstract: A rotary cutting tool includes a cutter body having a head, a shank, and a cavity extending along a central, longitudinal axis of the cutter body. The head includes at least one cutting insert mounted in a pocket adjacent to a chip groove. A stiffening device includes a plurality of slugs with high compressive strength disposed within the cavity, and a first compression screw threaded into a rearward end of the cutting tool. In another embodiment, a second compression screw is threaded into a forward end of the cutter body. In another embodiment, each slug includes a coolant hole, circumferential grooves and axial grooves on its outer diameter, and a plurality of radial grooves on each end, and the first compression screw has a coolant hole for allowing coolant to pass therethrough.
    Type: Application
    Filed: April 7, 2014
    Publication date: October 8, 2015
    Applicant: Kennametal Inc.
    Inventors: Kevin Michael Gamble, Ronald Louis Dudzinsky, James Michael Waggle
  • Publication number: 20140369773
    Abstract: A cutting tool, such as a milling cutter, includes a tool body and a plurality of pockets for receiving cutting inserts. Each pocket includes a bottom support surface, an radial support surface, an axial support surface, a first corner relief between the bottom support surface and the radial support surface, and a first stress relief formed in the first corner relief at one end of the pocket. The first stress relief is formed at an angle with respect to a plane parallel to the radial support surface. The first stress relief reduces a tensile stress of the cutting tool during a machining operation. A second and third stress relief may be formed in the first corner relief and/or in a second corner relief.
    Type: Application
    Filed: June 13, 2013
    Publication date: December 18, 2014
    Applicant: Kennametal Inc.
    Inventors: James Michael Waggle, Ronald Louis Dudzinsky
  • Patent number: 8573912
    Abstract: A fastener for attaching a milling cutter body to an adaptor includes a head portion, a body portion and an undercut disposed between the head portion and the body portion. The head portion has a diameter greater than a diameter of the undercut and a thread root diameter. The diameter of the undercut is equal to or less than the thread root diameter to allow the fastener to freely rotate when the fastener is threaded completely through the milling cutter body. Once threaded completely threaded the milling cutter body, the fastener is threaded into the adaptor to securely attached the milling cutter body to the adaptor.
    Type: Grant
    Filed: February 3, 2011
    Date of Patent: November 5, 2013
    Assignee: Kennametal Inc.
    Inventor: Ronald Louis Dudzinsky
  • Patent number: 8454277
    Abstract: A toolholder assembly has a pocket adapted to receive a double-sided on-edge cutting insert with wiper facets. A pocket has at least two sides and supports pads extending from each of the at least two sides, wherein the support pads contact the wiper facets of the cutting insert when the cutting insert is mounted within the pocket.
    Type: Grant
    Filed: November 9, 2010
    Date of Patent: June 4, 2013
    Assignee: Kennametal Inc.
    Inventors: Ronald Louis Dudzinsky, Srinivas Cherla, Neal Stuart Myers
  • Publication number: 20130121775
    Abstract: A double-sided, indexable cutting insert for a milling cutter includes a first surface, a second surface, and side surfaces. Major cutting edges are defined at an intersection between the first and second surfaces and side surfaces. Minor cutting edges and ramping cutting edges are defined at the intersection between the first and second surfaces and side surfaces. The cutting insert is mounted in a milling cutter having a bottom seating surface formed at an angle with respect to a central, rotational axis of the milling cutter, which provides superior performance for both milling and ramping cutting operations.
    Type: Application
    Filed: November 15, 2011
    Publication date: May 16, 2013
    Applicant: KENNAMETAL INC.
    Inventors: Ronald Louis Dudzinsky, Konrad Spitzenberger
  • Patent number: 8388272
    Abstract: A milling cutter includes a shank and upper portion with an insert pocket. The insert pocket includes a bottom surface, a radial support wall and an axial support wall. A cutting insert includes a hole extending from a bottom surface. A tapered pin includes a lower portion and a tapered upper portion. A spring engages the lower portion of the tapered pin and provides an upward biasing force on the tapered pin. A center axis of the tapered pin is closer to the radial support wall than a center axis of the hole of the cutting insert such that the tapered pin exerts pressure against the hole of the cutting insert to cause one of the side walls of the cutting insert to be forced against the radial support wall of the insert pocket when the cutting insert is mounted in the insert pocket.
    Type: Grant
    Filed: September 9, 2009
    Date of Patent: March 5, 2013
    Assignee: Kennametal Inc.
    Inventors: Ruy Frota De Souza Filho, Ronald Louis Dudzinsky, Kenneth George DeRoche
  • Publication number: 20120201629
    Abstract: A fastener for attaching a milling cutter body to an adaptor includes a head portion, a body portion and an undercut disposed between the head portion and the body portion. The head portion has a diameter greater than a diameter of the undercut and a thread root diameter. The diameter of the undercut is equal to or less than the thread root diameter to allow the fastener to freely rotate when the fastener is threaded completely through the milling cutter body. Once threaded completely threaded the milling cutter body, the fastener is threaded into the adaptor to securely attached the milling cutter body to the adaptor.
    Type: Application
    Filed: February 3, 2011
    Publication date: August 9, 2012
    Applicant: KENNAMETAL INC.
    Inventor: Ronald Louis Dudzinsky
  • Publication number: 20110058907
    Abstract: A milling cutter includes a shank and upper portion with an insert pocket. The insert pocket includes a bottom surface, a radial support wall and an axial support wall. A cutting insert includes a hole extending from a bottom surface. A tapered pin includes a lower portion and a tapered upper portion. A spring engages the lower portion of the tapered pin and provides an upward biasing force on the tapered pin. A center axis of the tapered pin is closer to the radial support wall than a center axis of the hole of the cutting insert such that the tapered pin exerts pressure against the hole of the cutting insert to cause one of the side walls of the cutting insert to be forced against the radial support wall of the insert pocket when the cutting insert is mounted in the insert pocket.
    Type: Application
    Filed: September 9, 2009
    Publication date: March 10, 2011
    Applicant: KENNAMETAL INC.
    Inventors: Ruy Frota De Souza Filho, Ronald Louis Dudzinsky, Kenneth George DeRoche
  • Patent number: D700225
    Type: Grant
    Filed: May 30, 2013
    Date of Patent: February 25, 2014
    Assignee: Kennametal Inc.
    Inventors: James Michael Waggle, Ronald Louis Dudzinsky
  • Patent number: D807935
    Type: Grant
    Filed: December 2, 2015
    Date of Patent: January 16, 2018
    Assignee: KENNAMETAL INC.
    Inventors: Ronald Louis Dudzinsky, Konrad Spitzenberger