This paper describes a new method and device for measuring helical line, pitch diameter, taper and half-angle of thread of petroleum thread gauges.
本文介绍一种测量石油螺纹量规的螺旋线、中径、锥度和牙形半角的新方法及装置。
By numerical simulation of a six-tooth rectangle spline, the optimized half-angle of the concave die can be got.
结合六齿矩形花键轴实际成形情况进行模拟计算，获得了入模半锥角的较佳取值范围。
By numerical simulation of a six-tooth rectangle spline, the optimized half-angle of the concave die can be got.
结合六齿矩形花键轴实际成形情况进行模拟计算，获得了入模半锥角的较佳取值范围。
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