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    旋转法测量大半径圆弧样板

    2007-11-15

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    摘? 要:提出了在万能工具显微镜上采用坐标平移和旋转的“旋转法”代替“弓高弦长法”在圆弧轮廓上进行均匀、多次选点,测量大半径短圆弧样板。简要介绍了“旋转法”的原理、测量方法,并应用“旋转法”实例测量进行误差分析,从而验证了“旋转法”能减小形状误差对测量半径精度的影响,也优于“弓高弦长法”的测量精度,是具体测量大半径圆弧样板活动中的一个实用方法。 ? 关键词:坐标平移旋转;大半径短圆弧样板;测量及计算;万能工具显微镜 ? 中图分类号:TH821 ?文献标识码:A?? 文章编号:1672-4984(2007)04-0056-04 ? Revolving measurement of large radius arc template LIU Shu-lin1, WU Chang-yan2, LI Jian-chuan3 (1.No.26 Institute of China Electronics Technology Collective Corporation,Chongqing 400060,China; 2.Dajiang Industry Group,Chongqing 400060,China; 3.National Institute of Measarement and Festing Technology,Chengdu 610061 China) ? Abstract: Taking the place of bowstring measuring, revolving method which realizes measurement through translating and revolving of coordinates on universal tool maker’s microscope can be used to measure large radius short arc template by selecting the measuring point along the arc uniformly and repeatedly. Principle, procedure and error analysis example of revolving method were briefly introduced. Those results showed effects of precision in measuring arc radius from form error could be reduced, and the precision of this method was much better than that of bowstring method. Thus, revolving method is an idea choice for measuring large radius arc template. ? Key words: Coordinates translation and rotation; Large radius short are template; Measurement and calculation; Universal tool maker’s microscope


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