高速内冷立铣刀的三维空化湍流计算

2019-04-23

作者：李广慧，尹凝霞，谭光宇，李勃澎单位：广东海洋大学

摘要：针对内冷铣刀高速切削加工过程中可能会出现的空化现象进行研究。采用三维混合流体完整空化湍流模型，基于RNG的kε湍流模型及SIMPLEC算法，对高速内冷铣刀切削区流场进行计算分析，得到了内冷铣刀出现空化现象的临界转速。本研究结果可为优化高速内冷铣刀结构设计提供理论依据。

关键词：高速铣削；内冷；三维空化湍流

中图分类号：TG501；TH161文献标志码：ADOI：10.3969/j.issn.1000-7008.2019.04.010

3D Cavitation Turbulent Flow Simulation in Highspeed

Internal Cooling Endmilling

Li Guanghui，Yin Ningxia，Tan Guangyu，Li Bopeng

Abstract:The paper aims at studying the cavitation phenomenon which may occur in highspeed internal cooling end milling.The three dimension (3D) mixture full cavitation turbulent model which represents the homogeneous multiple phase flow is used to compute 3D cavitation flow in highspeed internal cooling endmilling.The whole passage is simulated by RNG kε turbulence model and SIMPLEC algorithm.In terms of the simulated results，the cutting zone in highspeed internal cooling endmilling is analyzed and the computational critical speed of the internal cooling endmilling cutter is obtained.The results will provide theory gist to optimize the structural design of highspeed internal cooling endmilling cutters.

Keywords:highspeed endmilling；internal cooling；3D cavitation turbulent flow