The usage of rotary cutting tools is an effective technique to machine difficult to cut materials, even in a dry environment. In this technique, the tool is rotating around its axis, which offers a heating-cooling cycle for each portion of the cutting edge. Besides, the tool wear is dramatically decreased and distributed over the whole circumference of the round insert due to the tool motion. In this paper, an analytical-based model is developed to predict the cutting forces and tool rotational speed, which is a significant design aspect when machining with self-propelled rotary tools (SPRT). To minimize the used assumptions and maintain high results accuracy, the bearing friction of the cutting insert is considered. Accordingly, the tool's rotational speed is reduced compared to the assumption of bearing frictionless. Equivalent oblique cutting approach is applied, and Oxley's theory is extended to predict the cutting forces for the SPRT. The model has been validated with previously published experimental results.

旋转切割工具的使用是一种有效的技术，即使在干燥的环境下也可以对难以切割的材料进行机加工。在这种技术中，刀具围绕其轴线旋转，这为切削刃的每个部分提供了加热-冷却循环。此外，由于刀具运动，刀具磨损显着降低，并分布在圆形刀片的​​整个圆周上。在本文中，开发了一种基于分析的模型来预测切削力和刀具转速，这是在使用自行式旋转刀具（SPRT）进行加工时的重要设计方面。为了使使用的假设最小化并保持较高的结果精度，考虑了切削刀片的轴承摩擦。因此，与无摩擦轴承的假设相比，工具的转速降低了。应用了等效的斜切割方法，并扩展了Oxley的理论来预测SPRT的切割力。该模型已通过先前发布的实验结果进行了验证。