| 摘要 |
PROBLEM TO BE SOLVED: To provide a concentricity measuring gauge having a simple structure, providing accurate reading with the visual point kept from deviating, since a dial gauge is fixed and does not rotate during measurement, so that a measurement gauge for measuring the position of a hole in an object under measurement (concentricity with respect to the hole in a reference bush). SOLUTION: This concentricity measuring gauge is equipped with the reference bush 9 put in a measurement tool, etc. and a rotating holder 7 rotatable around an axis of the reference bush 9. This gauge is used for measuring the concentricity of the hole in the reference bush 9 with the hole in the object under measurement, by rotating a probe 10 of a measurement rod 5 held on the rotating holder 7 by 360°or larger, while keeping it in energized contact with the hole to be measured in the object under measurement. This gage is characterized in that the motion of the probe 10 of the measurement rod 5 is changed to that in the spindle axis direction of the dial gauge 1 by a rocking mechanism, comprising a bearing 6 in a longitudinal middle part of the measurement rod 5 and a slide mechanism, comprising a slide pin 4 contacting with a slope formed on an end face of the measurement rod 5 opposite to the probe 10. COPYRIGHT: (C)2005,JPO&NCIPI
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