MEASURING JIG, MEASURING METHOD AND MEASURING DEVICE FOR MACHINED SURFACE

摘要

PROBLEM TO BE SOLVED: To provide a measuring jig for a machined surface that can facilitate measurement of a vertical plane portion and a horizontal plane portion of a machined surface or re-machining thereof based on the measurement result. SOLUTION: For measurement of finishing precision of a machined surface machined with a cutting tool held on a main spindle 1 of a cutting machine, a cylindrical housing 10 mounted on the main spindle 1 so as to rotate on a rotation center axis thereof has a noncontact measuring sensor 13 for measuring the verticality of a vertical plane portion of the machined surface of a magnetic workpiece, a noncontact measuring sensor 14 for measuring the horizontality of a horizontal plane portion, and a magnet 16 for rotating the cylindrical housing 10 as attracted to the machined surface so that the noncontact measuring sensor 13 for verticality measurement is positioned in a measuring position of the machined surface.