Patents by Inventor Ewald Lehmann

Ewald Lehmann 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 for determining characteristic values of a suspended driven axis, especially of a machine tool, as well as suitable applications, corresponding facilities and their use
    Patent number: 7853413
    Abstract: A method for determining at least one characteristic value, especially of a suspended driven axis of a machine, is provided, the axis being driven by a rotating drive unit and/or by a linear drive unit. A torque or a force corresponding to the torque acting on the drive unit is measured along a predetermined movement path of the axis. The torque or the force is measured in the forward direction and reverse direction. Energy-conserving moments or energy-conserving forces on the one hand and/or friction-dependent moments or friction-dependent forces on the other hand are determined by computational overlaying of associated torque or force values as the at least one direction-independent characteristic value.
    Type: Grant
    Filed: October 7, 2008
    Date of Patent: December 14, 2010
    Assignee: Siemens Aktiengesellschaft
    Inventors: Christian Haberl, Ewald Lehmann, Joachim Ullrich
  • Method for determining characteristic values of a suspended driven axis, especially of a machine tool, as well as suitable applications, corresponding facilities and their use
    Publication number: 20090112488
    Abstract: A method for determining at least one characteristic value, especially of a suspended driven axis of a machine is provided, with the axis being driven by means of a rotating drive unit and/or by means of a linear drive unit. A torque or a force corresponding to said torque acting on the drive unit is measured along a predetermined movement path of the axis. Inventively the torque or the force is measured in the forward and reverse direction. Energy-conserving moments or energy-conserving forces on the one hand and/or friction-dependent moments or friction-dependent forces on the other hand are determined by computational overlaying of associated torque or force values as the at least one direction-independent characteristic value.
    Type: Application
    Filed: October 7, 2008
    Publication date: April 30, 2009
    Inventors: Christian Haberl, Ewald Lehmann, Joachim Ullrich