The knowledge of this research is established on the newly proposed internally cooled tool having the cooling channel make inside the insert. In the high pressure coolant turning, the differential pressure caused by the hydraulic pressure at the flank wedge and atmosphere pressure at each end of cooling channel is able to advance the cutting heat dissipation by enhanced flow. This paper focus on the relation between tool wear and cutting fluid flows produced by cooling channels having different angular positions. Computational fluid dynamics analysis based on the three-dimension turbulent model was used to simulate the flow streamline to clarify the cooling ability, followed by the experimental verification in the high pressure jet assistance turning of Inconel 718. As a result, applying cooling channel was proved can prolong tool life by about 40% most and received an advanced surface quality even the critical pressure was reached. The cooling channel made near to the cutting notch and major flank significantly suppressed the notch wear and flank wear, respectively.

该研究的知识基于新近提出的内部冷却工具，该内部冷却工具在刀片内部具有冷却通道。在高压冷却液车削中，由侧面楔形处的液压和冷却通道两端的大气压力引起的压差能够通过增加流量来促进切削散热。本文着眼于刀具磨损与由具有不同角度位置的冷却通道产生的切削液流之间的关系。基于三维湍流模型的计算流体动力学分析被用于模拟流线，以阐明冷却能力，随后进行了Inconel 718高压喷射辅助转向的实验验证。结果，事实证明，使用冷却通道最多可以将工具寿命延长40％左右，即使达到临界压力也可以获得先进的表面质量。靠近切割槽口和主侧面的冷却通道分别显着抑制了槽口磨损和侧面磨损。