Their mathematical modeling are needful, since they are not only indispensable for CNC machining and programming, but also imperative for investigating and improving the drill point performance.

但是，需要建立它们的数学模型。 这不仅是CNC加工和编程的前提，也是分析研究和提高钻尖性能的依据。

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The machining cost of barrel cam is decreased by improving the CNC programming method for milling of barrel cam, and the method can meet the request of cam groove width precision.

通过改进圆柱凸轮数控铣削加工编程方法，降低了圆柱凸轮的加工成本并能满足凸轮槽宽的高精度要求；

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By the integration of numerical result and CNC programming, a new method which advances the efficiency at the CNC machining of arced lath tool is provided.

通过数值解和数控编程结合，为圆弧车刀在数控加工中提高加工效率提供了一种新的办法。

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