| 摘要 |
A system for checking position and/or dimensions of an edge (5, R) of a workpiece (1, 1R) that defines a longitudinal axis, comprises two matching elements (6, 7) which have respective tapered matching surfaces (8, 9) adapted to assume a certain arrangement with respect to the edge to be checked, and a transducer system (11) that provides electrical signals (M, M6, M7) depending on said certain arrangement and on the position of the edge. The matching elements have different geometrical features, for instance the tapered matching surfaces define slope angles (α, β) with respect to the longitudinal axis which are different from each other. A method that uses this checking system involves bringing the matching elements in a checking condition wherein the respective matching surface assumes the certain arrangement with respect to the edge to be checked, detecting the electrical signals provided by the transducer system, and processing such signals together with reference signals depending on the arrangement of a reference edge. System and method are advantageously applied to the checking of the axial position of the internal edge of a valve seat (2). |
