Patents by Inventor Saiji Oda

Saiji Oda 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).

  • Transducer to detect force which is applied to machine tool when machining workpiece and its attaching structure
    Patent number: 4924713
    Abstract: A cutting load or a cutting resistance which is applied to a machine tool is detected by using a transducer having a film sheet type piezoelectric sensor. A detection output of the transducer is converted into a voltage signal by a charge amplifier. The transducer is attached to the portion of a feed nut which is moved in the axial direction by a screw shaft, and the cutting load is applied to the transducer. On the other hand, the transducer may be assembled in the portion of the bearing which supports the feed screw shaft so as to detect the cutting load which is applied to the screw shaft. Further, the transducer may be assembled integrally with the tool holder.
    Type: Grant
    Filed: February 28, 1989
    Date of Patent: May 15, 1990
    Assignee: Elco Co., Ltd.
    Inventors: Toshimichi Machino, Saiji Oda, Kihachirou Toubo, Masahiro Kadosaki