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Optical control of surface finish

机译:光学控制表面光洁度

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Measurement of surface roughness on mechanical components, which may incorporate also critical profiles, using diffused light techniques in a very complex problem. This paper describes a new optoelectronic device employing a diode laser and an array of discrete photodetectors placed on an arc of circle and interfaced with a data acquisition board. The device allows an extended range of roughness measurements; it is compact, easy to be used and almost insensitive to external noise and vibrations. It provides an estimation of the surface quality parameters comparing the scattered light at two different ranges of angles thereby overcoming many of the earlier limitations. The experiment has evidenced that there is a good agreement between measurement results and theoretical model usually applicable to normally distributed surfaces.
机译:在一个非常复杂的问题中,使用漫射光技术测量机械零件的表面粗糙度(可能还包含临界轮廓)。本文介绍了一种新的光电器件,该器件采用二极管激光器和离散的光电探测器阵列,这些探测器放置在圆弧上并与数据采集板连接。该设备允许扩展的粗糙度测量范围;它结构紧凑,易于使用,并且几乎不受外部噪声和振动的影响。通过比较两个不同角度范围的散射光,可以估算出表面质量参数,从而克服了许多以前的局限性。实验证明,测量结果与通常适用于正态分布表面的理论模型之间具有良好的一致性。

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