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目前在螺旋桨叶片曲面数控加工中，普遍存在着加工效率太低的现象，如何在保证加工精度的前提下提高加工效率已成为急待解决的问题。通过给出一般螺旋桨叶片工作面的方程，应用微分几何理论推导了数控加工所用球头铣刀的最大允许半径计算公式、走刀步长以及切削行距的计算公式，给出了根据刀具运动包络面计算实际加工误差的方法，最后通过实例验证了所建立模型的可行性和可靠性，为提高螺旋桨叶片曲面的加工效率提供了有效途径
At present, in the NC machining of propeller blade surface, there is a common phenomenon that the processing efficiency is too low. How to improve the processing efficiency under the premise of ensuring the machining accuracy has become an urgent problem to be solved. Based on the differential geometry theory, the formulas of the maximum allowable radius, the step size and the cutting line spacing of the ball nose milling cutter used in NC machining are deduced by the equations of general propeller blade working face. Surface method to calculate the actual machining error. Finally, an example is given to verify the feasibility and reliability of the established model, which provides an effective way to improve the machining efficiency of propeller blade surface.