Patents by Inventor Ralf Klötzer

Ralf Klötzer 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).

  • Patent number: 8584556
    Abstract: The invention relates to a method and a device for the precision machining of crankshafts or camshafts to final size tolerances RZ<10 ?m, preferably ?5 ?m and concentricity tolerances?30 ?M, preferably 6 ?m. The crankshafts or camshafts has been machined by a cutting operation and at least partly subjected to hardening. According to the invention, after an initial cutting operation and subsequent hardening to 45 to 60 HRC, preferably 50 to 53 HRC, a final cutting operation is carried out using cutting inserts fitted with CBN or PCD inlets. The device used for this purpose has cutting inserts which are fitted with CBN or PCD inlets, wherein cutting inserts clamped in place laterally, radially and tangentially follow each other alternately.
    Type: Grant
    Filed: June 18, 2010
    Date of Patent: November 19, 2013
    Assignee: Kennametal Inc.
    Inventors: Markus Heinloth, Jürgen Bär, Helmut Klein, Ralf Klötzer
  • Publication number: 20120076599
    Abstract: The invention relates to a method and a device for the precision machining of crankshafts or camshafts to final size tolerances Rz<10 ?m, preferably ?5 ?m and concentricity tolerances ?30 ?M, preferably 6 ?m. The crankshafts or camshafts has been machined by a cutting operation and at least partly subjected to hardening. According to the invention, after an initial cutting operation and subsequent hardening to 45 to 60 HRC, preferably 50 to 53 HRC, a final cutting operation is carried out using cutting inserts fitted with CBN or PCD inlets. The device used for this purpose has cutting inserts which are fitted with CBN or PCD inlets, wherein cutting inserts clamped in place laterally, radially and tangentially follow each other alternately.
    Type: Application
    Filed: June 18, 2010
    Publication date: March 29, 2012
    Applicant: KENNAMETAL INC.
    Inventors: Markus Heinloth, Jürgen Bär, Helmut Klein, Ralf Klötzer
  • Patent number: 8075228
    Abstract: The invention relates to a milling cutter head having a number of blade supports (11) which are inserted in recesses of a base body (10) and have blades (12), wherein each blade support can be axially displaced by a wedge and fixed in the milling cutter head by clamping elements. According to the invention, the blade supports each have a shank which is arranged in a receiving bore of the base body and can be fixed via a centrally (13) located clamping piece (18).
    Type: Grant
    Filed: July 26, 2006
    Date of Patent: December 13, 2011
    Assignee: Kennametal Widia Produktions GmbH & Co. KG
    Inventors: Markus Heinloth, Ralf Klötzer, Manfred Bauer, Günther Gnibl, Helmut Klein
  • Publication number: 20090097927
    Abstract: The invention relates to a milling cutter head having a number of blade supports (11) which are inserted in recesses of a base body (10) and have blades (12), wherein each blade support can be axially displaced by means of a wedge (14) and be fixed in the milling cutter head by means of clamping elements. According to the invention, the blade supports each have a shank which is arranged in a receiving bore of the base body and can be fixed via a centrally (13) located clamping piece (18).
    Type: Application
    Filed: July 26, 2006
    Publication date: April 16, 2009
    Applicant: Kennametal Widia Produktions GmbH & Co. KG
    Inventors: Markus Heinloth, Ralf Klotzer, Manfred Bauer, Gunther Gnibl, Helmut Klein
  • Publication number: 20090092456
    Abstract: The invention relates to a cutter support for fixing in a cutter head, comprising a shaft-like bar and a head with integrated cutters with minor cutters formed from a cutting surface and a free surface. According to the invention, a chamfer adjacent to the minor cutter is arranged on the free surface with a chamfer width decreasing outwardly to 0.
    Type: Application
    Filed: April 11, 2007
    Publication date: April 9, 2009
    Inventors: Markus Heinloth, Ralf Klotzer, Helmut Klein