Normal-line detection device, processing device, and normal-line detection method
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United States of America Patent
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Feb 27, 2018
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app pub date -
Jan 10, 2014
filing date -
Jan 18, 2013
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Abstract
A normal-line detection device is provided with: four or more non-contacting distance sensors for measuring the distance to a processing surface of a work piece, the non-contacting distance sensors being arranged on the periphery of a drill body, in an arrangement plane orthogonal to an axis line of the drill body, and a distance measurement axis of each non-contacting distance sensor and the axis line intersecting; and a PC for calculating an approximation surface of a processing surface on the basis of measurement values from the non-contacting distance sensors and the angle of the non-contacting distance sensors with respect to the axis line, and determining the normal-line of the approximation surface as the normal-line of the processing surface.
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