| 摘要 |
PURPOSE:To easily perform quantitative evaluation by applying a touch sensor to plural measurement points which are set at proper intervals in a normal direction and measuring two-dimensional coordinate size. CONSTITUTION:A measurement point P is determined in a free curved surface 1, differentiation is performed at the point P to draw a tangent to the free curved surface, and a line A perpendicular to it is defined. Then, X-Y coordinates are converted so that the Y axis of an X-Y coordinate system is parallel to the axis A, and the coordinate system is regarded as an X'-Y' axis. The coordinates of the measurement point P are also converted to the X'-Y' coordinate system. Then, the touch sensor is put closer in parallel to the Y' axis to measure the coordinate values (x', y') of the point P. Then, a measurement point P is set on the curved surface 1 at a proper interval and its coordinate values are found similarly. Then, the profile of the curved surface is easily and quantitatively obtained.
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