| 摘要 |
<P>PROBLEM TO BE SOLVED: To achieve a circularity measuring instrument capable of preventing a measurement point from being deviated from a measuring plane by changing only an attachment direction of a detector holder without changing attachment of a detector even when changing a measuring position and a measuring direction. <P>SOLUTION: The circularity measuring instrument includes: a base 21; a turntable 22 for rotating a placed workpiece 32; a column 24 extended in parallel with a rotational axis of the turntable and capable of moving in parallel with a measuring plane including the rotational axis of the turntable and a measurement point of the workpiece; a carriage 25 movably supported along the column 24; a detector holder 29 attached to the carriage 25; and a detector 30 attached to the detector holder 29 so that a probe 31 can be displaced on the measuring plane. The detector holder 29 can be attached to the carriage 25 on a different rotational position around the rotational axis vertical to the measuring plane, and even when the detector holder is attached to the different rotational position, a state that the probe can be displaced on the measuring plane is maintained. <P>COPYRIGHT: (C)2013,JPO&INPIT |
