摘要
由于切削温度会直接影响工件表面的加工质量以及刀具的使用寿命,为提高切削的加工精度和延长刀具的使用寿命,采用正交试验的方法设计一种数控加工机床内冷刀具的传热性能试验方案。使用ANSYS热-流-固耦合进行数值模拟,分析内冷刀具刀片结构参数和工况参数对切削温度的影响;通过分析传热性能,对刀片结构参数进行优化。结果表明:在试验参数范围内,刀片出液孔径、支液孔径和散热元件个数对刀具切削温度均有影响,刀具切削温度会随着支液孔径和散热元件个数的增大呈迅速下降趋势;在其他边界条件均不变的情况下,优化后的刀具切削温度可降低至177.87℃,大幅延长了刀具的使用寿命并提高了加工精度。
As the cutting temperature directly affects the machining quality of the work piece surface and the service life of the cutting tool,an experimental scheme for the heat transfer performance of the internal cooling cutting tool of the CNC machine tool is designed by using the orthogonal test method to improve the machining accuracy of cutting and extend the service life of cutting tools.The numerical simulation is carried out by using the thermal fluid solid coupling of ANSYS,the effects of the structural parameters and working conditions of the internal cooling cutting tool blade on the cutting temperature are analyzed;the structural parameters of the blade are optimized by analyzing the heat transfer performance.The results show that within the range of test parameters,the outlet hole diameter of the blade,the branch hole diameter and the number of heat dissipation elements all have an impact on the tool cutting temperature,the tool cutting temperature decreases rapidly with the increase of the branch hole diameter and the number of heat dissipation elements;under the condition that other boundary conditions remain unchanged the optimized tool cutting temperature can be reduced to 177.87°C,which can greatly extend the service life of cutting tools and improve the machining accuracy of cutting.
作者
李志敏
张新军
Li Zhimin;Zhang Xinjun(School of Intelligent Manufacturing,Henan Polytechnic College,Zhengzhou 450046,China)
出处
《机电工程技术》
2023年第6期155-159,共5页
Mechanical & Electrical Engineering Technology
基金
河南省高等学校重点科研项目(22B520020)。
关键词
内冷刀具
正交试验
热-流-固耦合仿真
传热性能
切削温度
internal cooling tool
orthogonal test
heat-fluid-solid coupling simulation
heat transfer performance
cutting temperature
