Method of calibrating a machine having at least two rotation axes
AssigneePratt & Whitney Canada Corp.
InventorsMario BLAIS, Clement Drouin LABERGE, Visal ING
Life of this patent
Estimating the term…
Abstract
The method can include measuring the tridimensional positions of a reference feature for a first at least three different angular positions of the reference feature around the first rotation axis and a same first reference angular position around the second rotation axis, the reference feature being fixed relative to the component; and measuring the tridimensional positions of the reference feature for a second at least three different angular positions of the reference feature around the first rotation axis and a same second reference angular position around the second rotation axis.
Claims20
A method of calibrating a machine having a component rotatable around a first rotation axis and a second rotation axis, the method comprising:
- measuring a 3-dimensional position of a reference feature for at least three angular positions of the reference feature around the first rotation axis and a first reference angular position around the second rotation axis, the reference feature fixed relative to the component;
- measuring a 3-dimensional position of the reference feature for at least three angular positions of the reference feature around the first rotation axis and a second reference angular position around the second rotation axis;
- using a computer, and based on the measured tridimensional positions:
- determining a first coordinate system of the component at the first reference angular position and calibrating a reference coordinate system of the machine based on the first coordinate system for operating the machine with the component at the first reference angular position;
- and
- determining a second coordinate system of the component at the second reference angular position and calibrating the reference coordinate system of the machine based on the second coordinate system for operating the machine with the component at the second reference angular position.
A computer implemented method of operating a CNC machine having a component rotatable around both a first rotation axis and a second rotation axis, the method comprising:
- measuring the 3-dimensional position of a reference feature for at least three different angular positions of the reference feature around the first rotation axis and a first reference angular position around the second rotation axis, the reference feature being fixed relative to the component;
- measuring the 3-dimensional positions of the reference feature for at least three different angular positions of the reference feature around the first rotation axis and a second reference angular position around the second rotation axis;
- based on the measured tridimensional positions:
- determining a first coordinate system of the component at the first reference angular position;
- determining a second coordinate system of the component at the second reference angular position;
- operating the CNC machine at the first reference angular position based on the first coordinate system;
- and
- operating the CNC machine at the second reference angular position based on the second coordinate system.
Dependencies are inferred from the claim text.