| 摘要 |
<p>A work holder (22) for holding work (W) has a porous body (34) disposed in the inner periphery thereof, and work (W) is held in the center of the work holder (22) by the centripetal action of the air spouted from the porous body (34). The work (W) held in the work holder (22) has its end surface photographed by a CCD cameral (54), and on the basis of the image of the end surface of the work projected on the CCD, the eccentricity of the work (W) is found by image processing. Thereby, a size measurement of the work (W) can be taken without rotating the work (W). Thus, a size measuring method and a device therefor can be provided which are capable of taking a simple and accurate size measurement of work by means of a simple arrangement.</p> |
