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测量圆柱螺纹塞规的中径,通常按其规格选择相应的辅助标准三针在测长仪上以间接测量的方式进行.文章旨在分析影响中径测量值诸多因素的测量不确定度. 相似文献
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本文根据国家计量技术规范JJF1059-1999《测量不确定度的评定与表示》,对本公司自制小直径测角仪示值误差测量结果不确定度进行了评定。 相似文献
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孟广萱 《中国计量学院学报》2004,15(4):304-306,313
介绍了一种圆锥螺纹塞规基面上中径的测量方法.应用量针和万能测长仪测得距基面一定截面上的中径d2,然后在万能工具显微镜上测得此截面距离基面的距离,以此求得基面上的中径d基. 相似文献
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介绍了一种利用激光衍射的原理测量小直径的方法。它是采用线阵CCD器件接收激光衍射图像,由8098单片机进行数据采集、处理与计算,从而实现了小直径细丝的直径在线测量。 相似文献
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本文阐述了一种测量尺寸比较大 ,直径较大 ,精度要求较高的内锥度的间接测量方法 ,用一组精密钢球 ,量块进行测量 ,并进行误差分析 ,论证其可行性。 相似文献
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本文主要阐述了利用影象法对60°圆锥管罗纹塞规(NPT)的基面中径进行间接测量的原理、方法、过程及数据处理方法。 相似文献
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Computational modeling has been employed to study how the uncertainty in the estimate of a fractional part of an interference order affects the results of gage block measurements with a Kosters interferometer at different values of the standard uncertainty for the fractional-order measurements. The statistical characteristics of the standard uncertainty of the distribution function for deviations of the measured results from the true value have been estimated at different values of the standard uncertainty of the fractional-order measurements. 相似文献
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The methodology of synthesizing a model for a diffraction laser-optical system for measuring the thickness of large diameter
lenses within the framework of engineer-graph procedures for the design, manufacture, and study of a laser-electronic Fourier
thickness gage is developed. Nine stages are identified for model synthesis based on successive-parallel sorting of models
when considering statement of the problem in designing a laser-electronic Fourier thickness gage. The task of creating a fundamentally
new method and provisions for measuring lens thickness is solved by means of an automatic diffraction-geometric-optical method
for recording the space-frequency spectrum of the measuring aperture. Schematic analysis is performed and a functional optical
scheme is constructed for a two-channel diffraction laser-optical system for measuring lens thickness. A measurement procedure
is developed and the Fourier thickness gage developed is studied by experiment.
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Translated from Izmeritel'naya Tekhnika, No. 10, pp. 30–35, October, 2005. 相似文献
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