SYSTEM AND METHOD FOR CHECKING DIMENSIONS AND/OR POSITION OF AN EDGE OF A WORKPIECE
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United States of America Patent
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Issued Date -
Dec 24, 2015
app pub date -
Dec 20, 2013
filing date -
Dec 20, 2012
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Abstract
A system for checking size and/or position of an edge (5, R, T) of a workpiece (1, 1R, 1T) comprises two checking elements including matching elements (6, 7; 16, 17) which comprise respective surfaces having tapered matching zones (8, 9) adapted to cooperate with the edge (5, R, T) of the workpiece (1, 1R, 1T) along a longitudinal direction, and a transducer element (11) that provides electrical signals (M, M6, M7) indicative of the cooperation between the matching zones and the edge. The matching zones define slope angles (α, β) with respect to the longitudinal direction that are different from each other. A method that uses such a system for checking includes bringing the matching elements in a checking condition in which the respective matching zone cooperates with the edge to be checked, detecting the electrical signals provided by the transducer element, and processing such signals with reference signals indicative of the cooperation between each matching zone and a reference edge. System and method can be advantageously applied in checking the diameter of an edge of a valve seat (2).
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