Patent ID: 7870676
Filing Date: 2011-01-18
Classification: B24B,G01B

Abstract:
1. An eyeglass frame shape-measuring apparatus that measures a shape of a lens frame of an eyeglass frame, comprising: a feeler for a lens frame that measures a direction of a moving radius of a lens frame; a drive motor that applies a certain amount of pressing pressure to the feeler for the lens frame, and a control device for measurement and calculation of the shape of the lens frame that separates a whole circumference of the shape of the lens frame into a plurality of measuring points and obtains as frame shape information frame shape values measured at each measuring point while the feeler for the lens frame is moved in sliding contact along the shape of the lens frame, wherein the control device compares a frame shape value at one measuring point with another 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, and the control device resets the pressing pressure value and measures again the frame shape at the another already measured measuring point in the case where the pressing pressure value differs from a preliminarily set pressing pressure value.