Patents by Inventor Bertil Colding

Bertil Colding 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: 4031368
    Abstract: For adaptive control of cutting machining operations, measured quantities characterizing optimized productivity are utilized. These quantities are connected with the wear of the tool and with the wearing rate. To measure the wear, the face wear (also called crater wear) of the tool, its flank wear and its minor-flank wear are used. Other parameters used are: the dimensions of the workpiece, its vibrations, its deflection, its surface roughness, cutting force, and cutting power. In a calculating unit, the shortest time is calculated until a given wearing criterium is reached. This time, and cost constants for the machining process, are fed into a control unit for calculating the optimized (maximum) productivity, and for performing the machining operation with cutting parameters kept within predetermined values. Machining is interrupted for tool changing when one of said wearing criteria is reached.
    Type: Grant
    Filed: February 11, 1974
    Date of Patent: June 21, 1977
    Assignee: Verkstadsteknik AB
    Inventors: Bertil Colding, Arne Novak, Unto Sandstrom, Goran Jakobsson