| 摘要 |
An eyeglass frame shape-measuring apparatus is provided in which deformation of the frame shape is determined at each measurement point based on the actual measurement values and even in the case where the frame shape changes in a direction that differs from prediction, measurement of the lens frame shape of the glass frame can be performed precisely, the eyeglass frame shape-measuring apparatus that measures a shape of a lens frame of an eyeglass frame includes a feeler (37) for a lens frame, a drive motor (6) and a control device ( FIG. 11 ) for measurement and calculation of the shape of the lens frame, the control device separates a whole circumference of the shape of the lens frame into a plurality of measuring points and obtains as frame shape information (�n, �n, Zn) frame shape values (�n, Zn) measured at each measuring point by moving the feeler (37) for the lens frame so that the feeler (37) is in sliding contact along the shape of the lens frame, the control device compares a frame shape value at one measuring point with an already measured frame shape value and determines an amount of pressing pressure in correspondence to an amount change of a frame shape detected at the one measuring point, in the case where the pressing pressure value differs from a preliminarily set pressing pressure value, the control device resets the pressing pressure value and measures again the frame shape at the already measured measuring point. |
