切削40CrMnMo微槽车刀的槽形改进设计研究
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摘要
文章在具有良好降温效果的前刀面近域微槽设计基础上,对微槽后部形状进行改进设计,仿真研究了MST和MCT两种微槽对刀具切削温度以及切削力的影响。结果表明:MST截面微槽的降温效果优于MCT截面微槽,MST截面微槽降温效果随微槽后翘夹角的增加而增加,当微槽后翘夹角为65°时降温效果最佳,此时最高切削温度为466℃,相对于原微槽车刀的降温幅度达到13%;相对于原微槽车刀,MST截面微槽和MCT截面微槽刀具的主切削力均有明显减小,降幅为2%～16%。
Based on the design of the near-edge micro-groove on the rake face with good cooling effect, the shape of the rear part of the micro-groove is improved. The effects of MST and MCT micro-grooves on the cutting temperature and cutting force are simulated. The results show that the cooling effect of MST micro-groove is better than that of MCT micro-groove. The cooling effect of MST micro-groove increases with the increase of the back-inclination angle of the micro-groove, the best cooling effect is at 65°, the maximum cutting temperature is 466℃ which is 13% lower than that of the original micro-groove turning tool. MST micro-groove and MCT micro-groove tool have greater reduction in main cutting force than original micro-groove turning tool by 2% to 16%.
Based on the design of the near-edge micro-groove on the rake face with good cooling effect, the shape of the rear part of the micro-groove is improved. The effects of MST and MCT micro-grooves on the cutting temperature and cutting force are simulated. The results show that the cooling effect of MST micro-groove is better than that of MCT micro-groove. The cooling effect of MST micro-groove increases with the increase of the back-inclination angle of the micro-groove, the best cooling effect is at 65°, the maximum cutting temperature is 466℃ which is 13% lower than that of the original micro-groove turning tool. MST micro-groove and MCT micro-groove tool have greater reduction in main cutting force than original micro-groove turning tool by 2% to 16%.
引文
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[4] 孙华亮,涂杰松,商宏飞,等.织构对涂层刀具切削性能影响的有限元分析及实验研究[J].现代制造工程,2013(9):1-6.
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[10] 韦联,周利平.基于Deform 3D的金属车削过程仿真[J].工具技术,2010(8):29-33.
[2] B?rner R,Scholz P,Kühn R,et al.Micro structuring of coated tools for dry sheet metal forming of aluminium alloys[C]// Euspen's,International Conference & Exhibition,2015.
[3] Varun Sharma,Pulak M Pandey.Geometrical design optimization of hybrid textured self-lubricating cutting inserts for turning 4340 hardened steel[J].The International Journal of Advanced Manufacturing Technology,DOI:10.1007/S00170-016-9163-6.
[4] 孙华亮,涂杰松,商宏飞,等.织构对涂层刀具切削性能影响的有限元分析及实验研究[J].现代制造工程,2013(9):1-6.
[5] 杨薪玉.Ti6Al4V材料硬质合金涂层刀具创新设计[D].贵州:贵州大学,2017.
[6] 占刚,何林,蒋宏婉,等.新型硬质合金微槽车刀切削能对比研究与预测[J].工程科学报,2017,39(8):1207-1214.
[7] 占刚,何林,蒋宏婉,等.切削参数对切削能影响实验研究[J].组合机床与自动化加工技术,2017(7):146-148,151.
[8] Jiang H,He L,Yang X,et al.Prediction and experimental research on cutting energy of a new cemented carbide coating micro groove turning tool[J].International Journal of Advanced Manufacturing Technology,2016,89(5-8):1-9.
[9] 蒋宏婉.切削40CrMnMo的硬质合金刀具前刀面微槽创新设计研究[D].贵阳:贵州大学,2017.
[10] 韦联,周利平.基于Deform 3D的金属车削过程仿真[J].工具技术,2010(8):29-33.