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通常选用最佳三针法测量螺纹塞规中径。在实际测量过程中发现,最佳三针法选择的三针对于部分螺纹塞规中径测量并不适合。本文以梯形螺纹塞规Tr×2-7H通端中径测量为例进行探讨和解析。
Usually choose the best three-pin method to measure the thread plug diameter. In the actual measurement process found that the best three-pin selection of the three-way part of the screw gauge diameter measurement is not suitable. In this paper, trapezoidal thread gauge Tr × 2-7H end-end diameter measurement as an example to explore and analyze.