基于螺旋线数控铣削的螺旋曲面粗加工的方法可大大提高加工效率，减少刀具磨损，降低加工成本。

This article introduces a means of nc program about rough cut of helicoid base on helix-milling. The means can improve efficiency of cutting, reduce the cutting abrasion, depress the operating costs.

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用测量数据求出了一条符合要求的不等距螺旋线方程，并给出其BASIC程序。采用划线、手动看线走刀配合机床进给的铣削加工工艺方法加工不等距螺旋输送辊。

In this paper, according to the data of measurement, a new equation of helixices and the BASIC program is proposed, and a manufacture method is discussed.

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