Patents Assigned to Doosan Machine Tools Co., Ltd.
  • Patent number: 11433497
    Abstract: The present disclosure relates to a tool magazine for a machine tool, and more particularly, to a tool magazine for a machine tool, wherein tool receiving units of a tool magazine are provided in multiple stages in a vertical turning center, such that a spindle head may easily change internal diameter machining tools and external diameter machining tools while moving in a horizontal direction and a vertical direction.
    Type: Grant
    Filed: December 28, 2018
    Date of Patent: September 6, 2022
    Assignee: DOOSAN MACHINE TOOLS CO., LTD.
    Inventor: Taehwan Ju
  • Patent number: 11433496
    Abstract: The present disclosure relates to a device for attaching and detaching tools in a magazine, and more particularly, to a device for attaching and detaching tools in a magazine of a machine tool, the device being capable of attaching or detaching a tool having directionality to or from each gripper of the magazine of the machine tool while accurately adjusting a fixed position of the tool.
    Type: Grant
    Filed: October 29, 2018
    Date of Patent: September 6, 2022
    Assignee: DOOSAN MACHINE TOOLS CO., LTD.
    Inventor: Jingeun Woo
  • Patent number: 11383374
    Abstract: The present disclosure relates to a pallet transfer system, including: a set-up structure that inserts a material into and withdraw a material out from a pallet; a pallet storage, on which the pallet is loaded; a material processing device that processes the material; a pallet transfer device that transfers the pallet to the set-up structure, the pallet storage, or the material processing device; a detector that detects a load applied to the pallet transfer device; and a controller that controls a speed of the pallet transfer device according to the information detected by the detector.
    Type: Grant
    Filed: October 7, 2015
    Date of Patent: July 12, 2022
    Assignee: DOOSAN MACHINE TOOLS CO., LTD.
    Inventor: Jae Doo Sim
  • Patent number: 11353842
    Abstract: The present invention relates to an apparatus and a method of automatically converting thermal displacement compensation parameters of a machine tool, which automatically convert a compensation parameter of a thermal displacement compensation equation of a machine tool so that the compensation parameter is optimized to a current thermal displacement state of the machine tool in real time based on Z-directional or Y-directional displacement data of a tool tip end of a reference tool measured by a tool measuring unit according to an operation state of the machine tool or various kinds of machine tools or thermal displacement data of the machine tool calculated by measuring a processed portion of a processed material, and temperature data measured by a temperature measuring unit, to minimize a processing error according to thermal displacement and improve processing accuracy of the machine tool.
    Type: Grant
    Filed: March 28, 2017
    Date of Patent: June 7, 2022
    Assignee: DOOSAN MACHINE TOOLS CO., LTD.
    Inventor: Ki Hong Kim
  • Patent number: 11344986
    Abstract: A tool spindle for machine tool includes a tool spindle having a front end in which a tool is mounted and installed to be rotatable, and a vibration damping device mounted in a rear end of the tool spindle to damp cutting vibration generated at the front end of the tool spindle, and including a rigid member coupled to the rear end of the tool spindle and a tuned mass member elastically supported by the rigid member.
    Type: Grant
    Filed: September 26, 2017
    Date of Patent: May 31, 2022
    Assignee: DOOSAN MACHINE TOOLS CO., LTD.
    Inventor: Chang-ho Lee
  • Patent number: 11213902
    Abstract: A broaching machine may include a broaching tool and a moving mechanism. The broaching tool may be movably arranged in a spindle of a lathe in a horizontal direction to machine a workpiece fixed to a chucking mechanism of the lathe. The moving mechanism may move the broaching tool in the horizontal direction. Thus, a process for forming a hole through the workpiece using the lathe and a process for machining the inner surface of the hole using the broaching machine may be continuously performed so that a time for machining the workpiece may be remarkably reduced. Further, the process for forming the hole through the workpiece using the lathe and the process for machining the inner surface of the hole using the broaching machine may be continuously performed on the workpiece fixed to the chucking mechanism to suppress dimension failures of the workpiece.
    Type: Grant
    Filed: January 25, 2018
    Date of Patent: January 4, 2022
    Assignee: DOOSAN MACHINE TOOLS CO., LTD.
    Inventor: Gun-Mo Koo
  • Patent number: 11000928
    Abstract: Disclosed is a machining center. The machining center includes a bed structure deflected along a deflection curve by a load distribution thereon, a palette structure secured to a first end portion of the bed structure, a spindle assembly to which a machining tool is secured and secured to a second portion of the bed structure, a table movably secured to the bed structure such that a table loading is applied to a load point of the bed structure and an automatic aligner automatically detecting first and second installation errors of the table and the spindle assembly and automatically correcting the first and the second installation errors such that the workpiece and the tool are aligned with each other. The misalignment between the workpiece and the tool is automatically detected and corrected in the machining center.
    Type: Grant
    Filed: April 13, 2017
    Date of Patent: May 11, 2021
    Assignee: DOOSAN MACHINE TOOLS CO., LTD.
    Inventor: Jae-doo Sim
  • Patent number: D866622
    Type: Grant
    Filed: July 12, 2018
    Date of Patent: November 12, 2019
    Assignee: DOOSAN MACHINE TOOLS CO., LTD.
    Inventor: Heedong Son
  • Patent number: D923670
    Type: Grant
    Filed: December 18, 2020
    Date of Patent: June 29, 2021
    Assignee: DOOSAN MACHINE TOOLS CO., LTD.
    Inventors: Heedong Son, Seungwook Shin
  • Patent number: D926786
    Type: Grant
    Filed: November 13, 2019
    Date of Patent: August 3, 2021
    Assignee: DOOSAN MACHINE TOOLS CO., LTD.
    Inventor: Sanghyun Ryu
  • Patent number: D926787
    Type: Grant
    Filed: November 13, 2019
    Date of Patent: August 3, 2021
    Assignee: DOOSAN MACHINE TOOLS CO., LTD.
    Inventor: Sanghyun Ryu
  • Patent number: D926788
    Type: Grant
    Filed: November 13, 2019
    Date of Patent: August 3, 2021
    Assignee: DOOSAN MACHINE TOOLS CO., LTD.
    Inventor: Sanghyun Ryu
  • Patent number: D932523
    Type: Grant
    Filed: February 12, 2019
    Date of Patent: October 5, 2021
    Assignee: DOOSAN MACHINE TOOLS CO., LTD.
    Inventor: Heedong Son
  • Patent number: D932525
    Type: Grant
    Filed: July 11, 2019
    Date of Patent: October 5, 2021
    Assignee: DOOSAN MACHINE TOOLS CO., LTD.
    Inventor: Heedong Son
  • Patent number: D932526
    Type: Grant
    Filed: July 11, 2019
    Date of Patent: October 5, 2021
    Assignee: DOOSAN MACHINE TOOLS CO., LTD.
    Inventor: Heedong Son
  • Patent number: D933724
    Type: Grant
    Filed: November 5, 2019
    Date of Patent: October 19, 2021
    Assignee: DOOSAN MACHINE TOOLS CO., LTD.
    Inventors: Seungwook Shin, Heedong Son
  • Patent number: D935475
    Type: Grant
    Filed: November 13, 2019
    Date of Patent: November 9, 2021
    Assignee: DOOSAN MACHINE TOOLS CO., LTD.
    Inventor: Sanghyun Ryu
  • Patent number: D937911
    Type: Grant
    Filed: November 13, 2019
    Date of Patent: December 7, 2021
    Assignee: DOOSAN MACHINE TOOLS CO., LTD.
    Inventors: Seungwook Shin, Heedong Son
  • Patent number: D938501
    Type: Grant
    Filed: July 11, 2019
    Date of Patent: December 14, 2021
    Assignee: DOOSAN MACHINE TOOLS CO., LTD.
    Inventors: Heedong Son, Seungwook Shin
  • Patent number: D963009
    Type: Grant
    Filed: November 13, 2019
    Date of Patent: September 6, 2022
    Assignee: DOOSAN MACHINE TOOLS CO., LTD.
    Inventors: Seungwook Shin, Heedong Son