The excessive heat generated during machining operations affects the tool wear behavior and machinability performance. Rotary tools were employed to resolve such problems, and it helps to maintain an acceptable tool life, especially when machining difficult-to-cut materials under dry environment. When using rotary tools, the tool rotates around its axis, and the angular motion allows the machining process to take place on the whole perimeter of the cutting insert instead of using a single point cut (i.e., convectional turning). This motion allows every portion of the cutting edge to engage with the workpiece for a relatively short time, and thus better cutting performance can be noticed. Few studies were performed to numerically model and investigate the cutting process using self-propelled rotary tools (SPRT). Furthermore, all existing models were based on certain assumptions to estimate the associated boundary conditions (e.g., the generated heat at the secondary shear zone, the heat partition factor, and the contact area between the tool and the chip), and that could affect the model accuracy. Thus, in the present work, a hybrid model was developed to accurately simulate the machining process using (SPRT) without relying on any of the previous assumptions. Two separate phases were employed in order to study the steady-state temperature field during machining with a SPRT. To validate the effectiveness of the proposed hybrid model, a comparison between the predicted and experimental results (in terms of cutting forces and chip morphology) are presented and discussed, and a good agreement was noticed.

在加工操作中产生的过多的热量会影响刀具的磨损行为和machinabilit ÿ性能。使用旋转工具解决了这些问题，它有助于保持可接受的工具寿命，尤其是在干燥环境下加工难以切削的材料时。当使用旋转刀具时，刀具绕其轴线旋转，并且角运动允许在切削刀片的整个周边上进行加工，而不是使用单点切削（即对流车削）。该运动允许切削刃的每个部分在相对短的时间内与工件接合，因此可以注意到更好的切削性能。很少有研究使用自动旋转工具（SPRT）进行数值建模和调查切削过程。此外，所有现有模型均基于某些假设来估算相关的边界条件（例如，二次剪切区产生的热量，热分配系数以及工具与切屑之间的接触面积），这可能会影响模型的准确性。因此，在当前的工作中，开发了一种混合模型，以在不依赖任何先前假设的情况下使用（SPRT）精确模拟加工过程。为了研究SPRT加工过程中的稳态温度场，采用了两个独立的阶段。为了验证所提出的混合模型的有效性，提出并讨论了预测结果和实验结果（在切削力和切屑形态方面）的比较，并注意到了良好的一致性。开发了一种混合模型，以在不依赖任何先前假设的情况下使用（SPRT）精确模拟加工过程。为了研究SPRT加工过程中的稳态温度场，采用了两个独立的阶段。为了验证所提出的混合模型的有效性，提出并讨论了预测结果和实验结果（在切削力和切屑形态方面）的比较，并注意到了良好的一致性。开发了一种混合模型，以在不依赖任何先前假设的情况下使用（SPRT）精确模拟加工过程。为了研究SPRT加工过程中的稳态温度场，采用了两个独立的阶段。为了验证所提出的混合模型的有效性，提出并讨论了预测结果和实验结果（在切削力和切屑形态方面）的比较，并注意到了良好的一致性。