METHOD FOR MACHINE TOOL AND PROFILOMETER COORDINATE REGISTRATION
First Claim
1. A method for registering machine tool and profilometer coordinates, said machine tool defining a C-axis having a zero position, said method comprising the steps of:
- loading a sacrificial workpiece into the machine tool;
cutting several first features in a surface of the sacrificial workpiece and producing a linear machine tool motion across the workpiece;
determining the centroid of each first cut feature;
fitting a line to said centroids of said first cut features;
measuring angle θ
0 of said line relative to the C-axis zero position;
moving the machine tool to a fixed radius;
cutting several second features in a surface of the sacrificial workpiece and producing a circular machine tool motion across the workpiece;
determining the centroid of each second cut feature;
fitting a circle to said centroids of said second cut features; and
determining a center of the circle, said center being the machine tool center in profilometer coordinates.
2 Assignments
0 Petitions
Accused Products
Abstract
A method for registering machine tool and profilometer coordinates, wherein the machine tool defines a C-axis having a zero position, C=0, comprises loading a sacrificial workpiece into the machine tool; cutting several first features in a surface of the sacrificial workpiece and producing a linear machine tool motion across the workpiece; determining the centroid of each first cut feature; fitting a line to the centroids of the first cut features; and measuring angle θ0 of the line relative to the C-axis zero position. The angle θ0 is the departure in profilometer coordinates from the C=0 line. The method includes moving the machine tool to a fixed radius; cutting several second features in a surface of the sacrificial workpiece and producing a circular machine tool motion across the workpiece; determining the centroid of each second cut feature; fitting a circle to the centroids of the second cut features; and determining a center of the circle. The center of the circle is the machine tool center in profilometer coordinates.
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Citations
3 Claims
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1. A method for registering machine tool and profilometer coordinates, said machine tool defining a C-axis having a zero position, said method comprising the steps of:
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loading a sacrificial workpiece into the machine tool;
cutting several first features in a surface of the sacrificial workpiece and producing a linear machine tool motion across the workpiece;
determining the centroid of each first cut feature;
fitting a line to said centroids of said first cut features;
measuring angle θ
0 of said line relative to the C-axis zero position;
moving the machine tool to a fixed radius;
cutting several second features in a surface of the sacrificial workpiece and producing a circular machine tool motion across the workpiece;
determining the centroid of each second cut feature;
fitting a circle to said centroids of said second cut features; and
determining a center of the circle, said center being the machine tool center in profilometer coordinates.
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2. A method for registering machine tool and profilometer coordinates, said machine tool defining a C-axis having a zero position, said method comprising the steps of:
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loading a sacrificial workpiece into the machine tool;
cutting several first features in a surface of the sacrificial workpiece and producing a linear machine tool motion across the workpiece;
determining the centroid of each first cut feature;
fitting a line to said centroids of said first cut features; and
measuring angle θ
0 of said line relative to the C-axis zero position.
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3. A method for registering machine tool and profilometer coordinates, said machine tool defining a C-axis having a zero position, said method comprising the steps of:
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loading a sacrificial workpiece into the machine tool;
moving the machine tool to a fixed radius;
cutting several second features in a surface of the sacrificial workpiece and producing a circular machine tool motion across the workpiece;
determining the centroid of each second cut feature;
fitting a circle to said centroids of said second cut features; and
determining a center of the circle, said center being the machine tool center in profilometer coordinates.
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Specification