Patents by Inventor Andreas KRETZSCHMAR

Andreas KRETZSCHMAR 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: 10343244
    Abstract: A chain link includes a base area, confined by four sides, and first to third link portions respectively on first to third sides. The first and second link portions respectively receive first and second connection elements for connecting the chain link to first and second adjacent chain links, and respectively and relatively define first and second rotational axes of adjacent first and second chain links. The third link portion receives a third connection element for connecting the chain link to a tool receptacle and defines a third rotational axis of a rotary motion of the tool receptacle in relation to the chain link. The first and second axes define a first plane, the first plane is parallel to the chain link base area, and the third axis lies outside the first plane. A tool magazine for a machine tool includes a link chain from chain links for the tool transport.
    Type: Grant
    Filed: February 2, 2016
    Date of Patent: July 9, 2019
    Assignee: DECKEL MAHO SEEBACH GMBH
    Inventors: Udo Tüllmann, Stephan Kümmel, Andreas Kretzschmar, Andreas Heumann
  • Publication number: 20160221137
    Abstract: A chain link includes a base area, confined by four sides, and first to third link portions respectively on first to third sides. The first and second link portions respectively receive first and second connection elements for connecting the chain link to first and second adjacent chain links, and respectively and relatively define first and second rotational axes of adjacent first and second chain links. The third link portion receives a third connection element for connecting the chain link to a tool receptacle and defines a third rotational axis of a rotary motion of the tool receptacle in relation to the chain link. The first and second axes define a first plane, the first plane is parallel to the chain link base area, and the third axis lies outside the first plane. A tool magazine for a machine tool includes a link chain from chain links for the tool transport.
    Type: Application
    Filed: February 2, 2016
    Publication date: August 4, 2016
    Applicant: DECKEL MAHO SEEBACH GMBH
    Inventors: Udo TÜLLMANN, Stephan KÜMMEL, Andreas KRETZSCHMAR, Andreas HEUMANN
  • Patent number: 8740761
    Abstract: A tool chain magazine, in particular for program-controlled milling machines and machining centers, comprising a stationary supporting structure to which linear guiding devices, chain wheels, and a drive assembly as a rotary drive for at least one of the chain wheels are mounted. The tool chain comprises an endless magazine chain consisting of a series of chain links connected in an articulate manner to one another, wherein supporting and guiding elements are provided on each chain link, and each chain link has a respective socket as a holder for a tool taper. The base bodies of the chain links of the magazine chain are formed by the tool stations centrally disposed therein, and the front and rear connecting joints of the chain links are arranged in the longitudinal center axis of the magazine chain.
    Type: Grant
    Filed: October 5, 2010
    Date of Patent: June 3, 2014
    Assignee: Deckel Maho Seebach GmbH
    Inventors: Udo Tüllmann, Stephan Kümmel, Andreas Kretzschmar
  • Patent number: 8425386
    Abstract: A tool changer for machine tools, the tool changer having at least one rotatable tool gripper, a supporting column for the tool gripper which can be lifted and lowered and rotated about a rotational axis, a mechanical cam gear for generating the lifting and rotating movements of the tool gripper, all driven by a drive motor connected to a cam barrel and intermediate gearing. The cam barrel has a tappet for the rotational drive of the tool gripper on its upper front and a cam curve or groove on its peripheral surface for the lifting movement of the tool gripper. The tappet drives a Maltese wheel supported on a shaft parallel to the rotational axis of the tool gripper. The Maltese wheel, the cam barrel, and the supporting column of the tool gripper are successively supported in a manner parallel to the axis.
    Type: Grant
    Filed: November 25, 2009
    Date of Patent: April 23, 2013
    Assignee: Deckel Maho Seebach GmbH
    Inventors: Udo Tüllmann, Stephan Kümmel, Andreas Kretzschmar
  • Publication number: 20110251035
    Abstract: A tool chain magazine, in particular for program-controlled milling machines and machining centers, comprising a stationary supporting structure to which linear guiding devices, chain wheels, and a drive assembly as a rotary drive for at least one of the chain wheels are mounted. The tool chain comprises an endless magazine chain consisting of a series of chain links connected in an articulate manner to one another, wherein supporting and guiding elements are provided on each chain link, and each chain link has a respective socket as a holder for a tool taper. The base bodies of the chain links of the magazine chain are formed by the tool stations centrally disposed therein, and the front and rear connecting joints of the chain links are arranged in the longitudinal center axis of the magazine chain.
    Type: Application
    Filed: October 5, 2010
    Publication date: October 13, 2011
    Applicant: DECKEL MAHO Seebach GmbH
    Inventors: Udo Tüllmann, Stephan Kümmel, Andreas KRETZSCHMAR
  • Publication number: 20100173762
    Abstract: A tool changer for machine tools, the tool changer having at least one rotatable tool gripper, a supporting column for the tool gripper which can be lifted and lowered and rotated about a rotational axis, a mechanical cam gear for generating the lifting and rotating movements of the tool gripper, all driven by a drive motor connected to a cam barrel and intermediate gearing. The cam barrel has a tappet for the rotational drive of the tool gripper on its upper front and a cam curve or groove on its peripheral surface for the lifting movement of the tool gripper. The tappet drives a Maltese wheel supported on a shaft parallel to the rotational axis of the tool gripper. The Maltese wheel, the cam barrel, and the supporting column of the tool gripper are successively supported in a manner parallel to the axis.
    Type: Application
    Filed: November 25, 2009
    Publication date: July 8, 2010
    Applicant: DECKEL MAHO SEEBACH GMBH
    Inventors: Udo TÜLLMANN, Stephan KÜMMEL, Andreas KRETZSCHMAR