Edge alignment method
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United States of America
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Nov 26, 2024
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N/A
app pub date -
Mar 8, 2021
filing date -
Mar 8, 2021
priority date (Note) -
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Abstract
An edge alignment method includes (a) calculating coordinates of points having a possibility of corresponding to an edge of the workpiece, (b) forming an approximate circle by using a least squares method on all the coordinates, (c) calculating deviations between the approximate circle and respective ones of all the points, and if plural ones of the points have deviations greater than or equal to a preset threshold, respectively, then determining the point, the deviation of which is greatest, to be a false detection position, and excluding from consideration candidates the point determined to be the false detection position, and (d) estimating a position of the edge of the workpiece from the coordinates of three or more of the points still remaining without exclusion, and based on the estimated position of the edge, deriving a machining area at the outer peripheral portion of the workpiece.
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