Patents by Inventor Hisaki Itabashi

Hisaki Itabashi 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).

  • Machine tool
    Patent number: 9561570
    Abstract: A machine tool includes a spindle device; a shutter which is disposed between a tool magazine disposed over a machining chamber and the machining chamber, and is capable of opening and closing; a tool exchange device; and a tool breakage detecting device to detect whether a tool indexed to a tool detecting position of the tool magazine has breakage or not, and performs a return step of returning a first tool to the tool magazine with use of the tool exchange device; an attachment step of attaching a second tool to the spindle device; and a breakage detecting step of rotatively moving the first tool returned to the tool magazine to the tool detecting position and detecting breakage of the first tool with use of the tool breakage detecting device, after the shutter is closed. This constitution can prevent erroneous detection and improve the operational efficiency of the machine tool.
    Type: Grant
    Filed: November 29, 2013
    Date of Patent: February 7, 2017
    Assignee: KOMATSU NTC LTD.
    Inventors: Yuji Kanehira, Nobuhito Oki, Yasuo Hasegawa, Hisaki Itabashi
  • MACHINE TOOL
    Publication number: 20150266153
    Abstract: A machine tool includes a spindle device; a shutter which is disposed between a tool magazine disposed over a machining chamber and the machining chamber, and is capable of opening and closing; a tool exchange device; and a tool breakage detecting device to detect whether a tool indexed to a tool detecting position of the tool magazine has breakage or not, and performs a return step of returning a first tool to the tool magazine with use of the tool exchange device; an attachment step of attaching a second tool to the spindle device; and a breakage detecting step of rotatively moving the first tool returned to the tool magazine to the tool detecting position and detecting breakage of the first tool with use of the tool breakage detecting device, after the shutter is closed. This constitution can prevent erroneous detection and improve the operational efficiency of the machine tool.
    Type: Application
    Filed: November 29, 2013
    Publication date: September 24, 2015
    Inventors: Yuji Kanehira, Nobuhito Oki, Yasuo Hasegawa, Hisaki Itabashi
  • Machining center
    Patent number: D548754
    Type: Grant
    Filed: October 31, 2006
    Date of Patent: August 14, 2007
    Assignee: Nippei Toyama Corporation
    Inventors: Hisaki Itabashi, Fumihiro Kamikonya