外螺纹
Based on quality engineering theory, the quality loss function of thread fit clearance is constructed, and the calculating formula of pitch diameters of inside and outside thread are derived.
依据质量工程学的损失函数理论,建立紧固螺纹配合间隙的质量损失函数,推导出内、外螺纹中径的工厂容差的计算公式;
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