Method and arrangement for measuring internal threads of a workpiece with an optical sensor
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United States of America Patent
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Jan 30, 2018
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Mar 11, 2016
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Sep 13, 2013
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Abstract
The invention is directed to a method for measuring an internal thread of a workpiece with a coordinate measuring apparatus and a CCD or CMOS sensor. The sensor records at least two images of a section of the internal thread and the recording conditions for the two images are modified. The data from these two recorded images are used to establish the position, orientation, core diameter and/or the pitch of the internal thread. The invention is also directed to an arrangement for measuring an internal thread of a workpiece and includes a coordinate measuring apparatus and the CCD or CMOS sensor in accordance with the above method.
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