MEASURING METHOD OF FREEFORM CURVED SURFACE USING CURVATURE OF A PART AREA

摘要

The present invention relates to a method for measuring a shape of a free-form surface using a curvature of a partial area. The purpose of the present invention is to provide a method for measuring a shape of a free-form surface, capable of accurately measuring the shape of a free-form surface through a simple process. The other purpose of the present invention is to provide a method for measuring a shape of a free-form surface capable of being combined in an X-Y direction between partial areas adjacent to a partial area of a curve to be measured. According to the present invention, the method for measuring a shape of a free-form surface includes: a step of dividing a free-formed surface to be measured into multiple fine partial areas in a plane; a step of measuring an X-directional curvature and a Y-directional curvature on the each fine partial area; a step of generating an X-axis curvature matrix map and a Y-axis curvature matrix map of the free-formed surface to be measured based on the X-directional curvature and the Y-directional curvature; a step of generating an X-axis inclination value matrix map and a Y-axis inclination value matrix map by using a Frenet equation from the X-axis curvature matrix map and the Y-axis curvature matrix map; and a step of generating a shaping matrix of the free-formed surface to be measured by integrating the X-axis inclination value matrix map and the Y-axis inclination value matrix map.