TC18钛合金车削加工的切削力和表面粗糙度
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摘要
采用正交试验法对TC18钛合金进行了车削试验,使用直观分析法、经验模型分析法和极差分析法研究了主轴转速、进给深度和切削深度对切削力和表面粗糙度的影响。结果表明:和进给深度、主轴转速相比,切削深度对切削力的影响最大,随着切削深度的增加切削力不断增大;进给深度对表面粗糙度的影响最大,切削深度的影响次之,主轴转速的影响最小;在切削力和表面粗糙度的指数经验模型中,拟合程度较高的为主切削力(Fz)的参数模型,且显著程度相对较高。
Turning tests were conducted on TC18 titanium alloy by orthogonal testing method.The effects of spindle speed,feed depth and cutting depth on cutting force and surface roughness were studied by intiutive analysis,empirical model analysis and range analysis.The results show that compared with feed depth and spindle speed,the effect of cutting depth on cutting force was the largest.The cutting force increased with the increase of cutting depth.The effect of feed depth on surface roughness was the largest,the effect of cutting depth was the second,and the effect of spindle speed was the least.In the exponential empirical model of cutting force and surface roughness,the model with higher fitting degree was the parameter model of main cutting force(Fz),and the significant degree was relatively high.
Turning tests were conducted on TC18 titanium alloy by orthogonal testing method.The effects of spindle speed,feed depth and cutting depth on cutting force and surface roughness were studied by intiutive analysis,empirical model analysis and range analysis.The results show that compared with feed depth and spindle speed,the effect of cutting depth on cutting force was the largest.The cutting force increased with the increase of cutting depth.The effect of feed depth on surface roughness was the largest,the effect of cutting depth was the second,and the effect of spindle speed was the least.In the exponential empirical model of cutting force and surface roughness,the model with higher fitting degree was the parameter model of main cutting force(Fz),and the significant degree was relatively high.
引文
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[3]SUN S Y,LV W.Microstructure and mechanical properties of TC18 titanium alloy[J].Rare Metal Materials and Engineering,2016,45(5):1138-1141.
[4]吴崇周.钛合金在飞行器中的作用[J].宇航材料工艺,2016,46(5):8-12.
[5]李登万,陈洪涛,冯锦春,等.基于均匀设计法的精密车削参数优化[J].机械工程学报,2015,51(3):206-212.
[6]PARAKKAL G,ZHU R X,KAPOOR S G,et al.Modeling of turning process cutting forces for grooved tools[J].International Journal of Machine Tools and Manufacture,2002,42(2):179-191.
[7]张慧萍,张庆宇,张校雷,等.高速铣削超高强度钢的切削力及表面粗糙度研究[J].工具技术,2017,51(8):12-15.
[8]谭靓,张定华,姚锋,等.刀具几何参数对钛合金铣削力和表面完整性的影响[J].中国机械工程,2015,26(6):737-742.
[9]ZHANG G C,GUO C S.Modeling of cutting force distribution on tool edge in turning process[J].Procedia Manufacturing,2015,1:454-465.
[10]杜东兴,刘道新,孙瑜峰,等.航空用TC18钛合金的车削加工工艺技术研究[J].机械科学与技术,2011,30(11):1805-1810.
[11]李友生,邓建新,张辉,等.高速车削钛合金的硬质合金刀具磨损机理研究[J].摩擦学学报,2008,28(5):443-447.
[12]NING Y Q,XIE B C,LIANG H Q,et al.Dynamic softening behavior of TC18 titanium alloy during hot deformation[J].Materials&Design,2015,71:68-77.
[13]NING Y Q,LUO X,LIANG H Q,et al.Competition between dynamic recovery and recrystallization during hot deformation for TC18titanium alloy[J].Materials Science and Engineering:A,2015,635:77-85.
[14]QU F S,ZHOU Y H,ZHANG L Y,et al.Research on hot deformation behavior of Ti-5Al-5Mo-5V-1Cr-1Fe alloy[J].Materials&Design,2015,69:153-162.
[15]LEI S T,LIU W J.High-speed machining of titanium alloys using the driven rotary tool[J].International Journal of Machine Tools and Manufacture,2002,42(6):653-661.
[16]SUN S Y,LU W J.Effects of trace reinforcements on microstructure and tensile properties of in-situ synthesized TC18 Ti matrix composite[J].Journal of Composite Materials,2017,51(26):3623-3629.
[17]刘雄,滕文博,潘星宇,等.基于DEFORM的导电切削GCr15主切削力研究[J].润滑与密封,2018,43(3):88-91.
[18]陆剑中.金属切削原理与刀具[M].北京:机械工业出版社,2011:44-56.
[19]LI Z,TIAN X J,TANG H B,et al.Low cycle fatigue behavior of laser melting deposited TC18titanium alloy[J].Transactions of Nonferrous Metals Society of China,2013,23(9):2591-2597.