thread formula

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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A Optimized Formula of the Thread Pitch of the Rotary Screw Conveyors

螺旋输送机螺距优化公式推导

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The present article is related to the analysis and discussion on tolerances of thread pitch and screwed hole in light rails and derivates the general design formula of screw pitch gauge. Consequently, the design of various screw pitch gauges for light rails can be improved.

本文对轻轨孔距及螺孔的公差进行了分析讨论，推导出孔距卡板的通用设计公式，据此可改进各种规格轻轨孔距的检查卡尺的设计。

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