HOLE-PITCH MEASURING METHOD AND HOLE-PITCH MEASURING INSTRUMENT

摘要

PROBLEM TO BE SOLVED: To provide a hole-pitch measuring method that can simply measure, in a short time whether a pitch between pitches of a first hole and a second hole provided in a workpiece is held in a regulated range.;SOLUTION: Two pins 5 and 5 arranged in parallel to two vertexes of a triangle are provided, and further, a hole pitch measuring instrument 1 for providing a probe 7a of a dial gauge 7 performing zero adjustment is used by using a master gauge on the other vertex of the triangle. The hole pitch measuring method comprises bringing the two pins 5 and 5 of the hole pitch measuring instrument 1 into contact with the inside diameter face of the first hole H1 of the workpiece W, bringing the probe 7a into contact with the inside diameter face of the second hole H2, measuring the inner face position (size b) of the second hole H2 and regarding the pins 5 and 5 as a reference, and comparing the quality determination of the pitch a between the centers of the first hole H1 and the second hole H2 with the master gauge.;COPYRIGHT: (C)2006,JPO&NCIPI