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一、前言测量直线度的节距法已被广泛用于工程测量之中,而通常使用的又是它的接触测量形式。这种接触测量方式存在着易划伤被测表面以及反光镜(或水平仪)的自重会引起被测件弹性变形而影响测量精度的缺点,因此不适于测量光学表面和横截面单薄的细长零件表面。本文探讨了节距法的非接触测量方式,它特别适用于测量细长光学表面的直线度。和其
First, the foreword Pitch method of measuring straightness has been widely used in engineering surveying, and it is commonly used in contact measurement form. This contact measurement method has the disadvantage of easily scratching the surface to be measured and the self-weight of the reflector (or spirit level), which may cause the measured part to be deformed elastically and affect the measurement accuracy. Therefore, it is not suitable for measuring the optical surface and the thin section with thin cross-section surface. This article explores the non-contact measurement of the pitch method, which is particularly suitable for measuring the straightness of an elongated optical surface. And it