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本文给出了轧制钻头主沟曲面扇形板截形的简捷数学模型，并根据工程需要，对截形进行了圆弧拟合处理，通过实例计算验证了其可靠性
In this paper, a simple and easy mathematical model of the truncated quadrant of the main groove surface of the rolling drill is given. According to the engineering needs, the truncation is fitted by circular arc. The reliability of the prototype