Patents by Inventor Gerard Maurice Henri Coffignal

Gerard Maurice Henri Coffignal 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).

  • Method of determining the conditions of a phase for machining a workpiece with modulated cutting rate
    Patent number: 8655479
    Abstract: A method of determining conditions for machining a part so as to avoid vibration appearing during the machining. A machining stage is simulated by provisionally setting parameters of a function for modulating cutting speed, by deducing a corresponding surface state, by modifying parameters iteratively with the machining stage being simulated each time until the surface state reaches an acceptable value, and by performing the machining stage by causing the cutting speed to vary in application of the corresponding modulation function.
    Type: Grant
    Filed: July 24, 2009
    Date of Patent: February 18, 2014
    Assignee: SNECMA
    Inventors: Gerard Maurice Henri Coffignal, Philippe Lorong, Alexis Perez-Duarte
  • METHOD OF DETERMINING THE CONDITIONS OF A PHASE FOR MACHINING A WORKPIECE WITH MODULATED CUTTING RATE
    Publication number: 20110118865
    Abstract: A method of determining conditions for machining a part so as to avoid vibration appearing during the machining. A machining stage is simulated by provisionally setting parameters of a function for modulating cutting speed, by deducing a corresponding surface state, by modifying parameters iteratively with the machining stage being simulated each time until the surface state reaches an acceptable value, and by performing the machining stage by causing the cutting speed to vary in application of the corresponding modulation function.
    Type: Application
    Filed: July 24, 2009
    Publication date: May 19, 2011
    Applicant: SNECMA
    Inventors: Gerard Maurice Henri Coffignal, Philippe Lorong, Alexis Perez-Duarte