超精密切削机理的流体力学分析模型

随着加工硬件性能的提高 ,有色金属的超精密加工技术已相对成熟。但是对微小切削深度时的加工过程还没有建立起比较满意的模型 ,因为还没有深刻了解超精密加工机理。本文提出了基于流体力学的超精密切削模型 ,考虑了切削刀具几何形状 (包括切削刃半径 )、后刀面工件材料弹性回复的影响。使用该模型可以预测超精密加工过程中刀具刃口的影响、尺寸效应、切削力以及切屑的卷曲半径和刀 -屑的接触长度等。

An Analysis Model of the Ultra-Precision Cutting Mechanism Based on Fluid Dynamics

The technology required for ultra-precision machining of non-metals is relatively well established, owing to significant improvements in the performance of the hardware used. However, no satisfactory analytical model has been developed for very small cutting depths of this process, demonstrating that the physics of the ultra-precision machining process are not well understood. This paper presents the development of an ultra-precision cutting model based on fluid mechanics that considers not only cutting tool geometry, including the cutting edge radius, but also the effect of elastic rebound at the flank face.