Method and system for checking positioning accuracy of a CNC machine
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United States of America Patent
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Nov 26, 2019
Grant Date -
Sep 22, 2016
app pub date -
Feb 25, 2015
filing date -
Feb 27, 2014
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Abstract
A method for checking positioning accuracy of a CNC machine with a machine tool head and a machine table using an x, y, z coordinate system, the method comprising:
- a) arranging a plurality of vessels on the table, the vessels in fluid connection with each other to form a system of vessels, the vessels filled with a liquid,b) mounting a distance sensor to the tool head,c) positioning the tool head to a position above the surface of the liquid in one of the vessels,d) a determining the z coordinate for which the distance sensor touches the surface of the liquid, or,for a predetermined position of the tool head in z direction above the liquid, determining the distance between the distance sensor and the liquid;steps c) and d) are repeated for each vessel to determine a z coordinate of the surface of the liquid.
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