Patents by Inventor Toshimune KAWAI

Toshimune KAWAI 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).

  • Tool path generation method and machine tool using rate of change of curvature based smoothing
    Patent number: 10248101
    Abstract: A tool path generation method for generating a second tool path by performing a smoothing process on a first tool path for processing a work with a machine tool includes a change rate calculation step of calculating a curvature change rate of the first tool path at a plurality of moving points (Pn) of the first tool path. The tool path generation method includes: a weight calculation step of calculating a moving average weight on the basis of the curvature change rate of the first tool path at each of the moving points (Pn); and a step of calculating coordinate values of the moving average of the moving points (Pn) using the weight at each of the moving points (Pn), and setting the coordinate values of the moving average of the moving points (Pn) as moving points of the second tool path.
    Type: Grant
    Filed: October 29, 2014
    Date of Patent: April 2, 2019
    Assignee: MAKINO MILLING MACHINE CO., LTD.
    Inventors: Mitsunari Oda, Megumi Furuta, Akihiro Shinone, Toshimune Kawai
  • TOOL PATH GENERATION METHOD AND MACHINE TOOL
    Publication number: 20170300029
    Abstract: A tool path generation method for generating a second tool path by performing a smoothing process on a first tool path for processing a work with a machine tool includes a change rate calculation step of calculating a curvature change rate of the first tool path at a plurality of moving points (Pn) of the first tool path. The tool path generation method includes: a weight calculation step of calculating a moving average weight on the basis of the curvature change rate of the first tool path at each of the moving points (Pn); and a step of calculating coordinate values of the moving average of the moving points (Pn) using the weight at each of the moving points (Pn), and setting the coordinate values of the moving average of the moving points (Pn) as moving points of the second tool path.
    Type: Application
    Filed: October 29, 2014
    Publication date: October 19, 2017
    Applicant: MAKINO MILLING MACHINE CO., LTD.
    Inventors: Mitsunari ODA, Megumi FURUTA, Akihiro SHINONE, Toshimune KAWAI