×

Method for determining the shape of a workpiece

  • US 8,725,446 B2
  • Filed: 07/08/2010
  • Issued: 05/13/2014
  • Est. Priority Date: 07/08/2009
  • Status: Expired due to Fees
First Claim
Patent Images

1. Method for determining the shape of a pin having a pin axis during a machining process, comprising the following steps:

  • a) measured values representing the shape of the pin are determined and stored by use of a measuring sensor, the measured values being obtained during a machining process, during which the pin performs an orbital rotation about a rotational axis that is parallel to the pin axis, and a measuring prism contacting the pin being used, the measuring prism being arranged on the measuring sensor;

    b) approximate values representing the shape of the pin are determined during a machining process by a calculation unit including a processor;

    c) modeled measured values are calculated using the approximate values during a machining process by the calculation unit;

    d) the measured values found by use of the measuring sensor are compared to the modeled measured values and difference values are calculated during a machining process by the calculation unit, step d) including the following substeps;

    d1) calculation of correction values from the difference values;

    d2) correction of the approximate values using the correction values;

    d3) the correction values being added to the approximate values in step d2); and

    d4) a damping factor being taken into account when the correction values are added to the approximate values according to the following formula

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×