PCBN刀具高速铣削TC4钛合金切削性能与工艺参数优化研究
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摘要
针对钛合金TC4(Ti-6Al-4V)的加工特性,采用PCBN刀具,基于单因素试验,研究高速铣削条件下工艺参数对切削力、切削振动等的影响规律,提出综合考虑切削力、切削振动、表面粗糙度的工艺参数优选方法。研究表明:切削力和切削振动随切削速度v和每齿进给量f_z的增大呈现一定的波动,随径向切深a_e和轴向切深a_p的增大而增大,切削振动受切削力影响较为显著。考虑切削性能,以材料切除率为优化目标,以切削力、切削振动和表面粗糙度等为约束条件,建立工艺参数优选模型,可得到不同约束条件下工艺参数的优选组合。
PCBN tools were used for high-speed milling of TC4 alloy based on single factor experiment. Cutting force and cutting vibration were measured and analyzed with different cutting parameters. Cutting parameter optimization method was proposed considering cutting force, cutting vibration and surface roughness. The results show that with cutting speed and feed per tooth increasing, the cutting force and cutting vibration have a certain fluctuation. As the radial cutting depth and axial cutting depth increasing, the cutting force and cutting vibration increase. The cutting force has a significant influence on cutting vibration. Considering the cutting performance, the cutting parameters optimization model was established, taking the maximum rate of metal removal as optimization objective, the cutting force, cutting vibration and surface roughness as the constraint conditions. The optimized cutting parameters under different constraints condition were obtained.
PCBN tools were used for high-speed milling of TC4 alloy based on single factor experiment. Cutting force and cutting vibration were measured and analyzed with different cutting parameters. Cutting parameter optimization method was proposed considering cutting force, cutting vibration and surface roughness. The results show that with cutting speed and feed per tooth increasing, the cutting force and cutting vibration have a certain fluctuation. As the radial cutting depth and axial cutting depth increasing, the cutting force and cutting vibration increase. The cutting force has a significant influence on cutting vibration. Considering the cutting performance, the cutting parameters optimization model was established, taking the maximum rate of metal removal as optimization objective, the cutting force, cutting vibration and surface roughness as the constraint conditions. The optimized cutting parameters under different constraints condition were obtained.
引文
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[2] 俞树荣,白利蓉,景鹏飞,等.摩擦配副材料对TC4钛合金微动磨损行为的影响[J].润滑与密封,2018,43(8):14-18.YU S R,BAI L R,JING P F,et al.Effect of Counterpart Materials on Fretting Wear Behavior of TC4 Titanium Alloy[J].Lubrication Engineering,2018,43(8):14-18.
[3] 陈建岭.钛合金高速铣削加工机理及铣削参数优化研究[D].济南:山东大学,2009.
[4] 刘战强,万熠,周军.高速切削刀具材料及其应用[J].机械工程材料,2006,30(5):1-4.LIU Z Q,WAN Y,ZHOU J.Tool Materials for High Speed Machining and Their Fabrication Technologies[J].Materials for Mechanical Engineering,2006,30(5):1-4.
[5] 徐九华,刘鹏,傅玉灿.超硬刀具高速切削钛合金研究进展[J].航空制造技术,2011(14):26-30.XU J H,LIU P,FU Y C.Advances in High Speed Machining of Titanium Alloys with Superhard Cutting Tools[J].Aeronautical Manufacturing Technology,2011(14):26-30.
[6] ZOYA Z A,KRISHNAMURTHY R.The Performance of CBN Tools in the Machining of Titanium Alloys[J].Journal of Materials Processing Technology,2000,100(1/2/3):80-86.
[7] ZAREENA A R,RAHMAN M,WONG Y S.Binderless CBN Tools,a Breakthrough for Machining Titanium Alloys[J].Journal of Manufacturing Science and Engineering,2005,127(2):277-279.
[8] 刘战强,艾兴,李甜甜,等.PCBN刀具加工TC4钛合金的切削加工性[J].山东大学学报(工学版),2009,39(1):77-83.LIU Z Q,AI X,LI T T,et al.Machinability Analysis of Ti-6Al-4V Alloy with PCBN Tools in Turning Operations[J].Journal of Shandong University(Engineering Science),2009,39(1):77-83.
[9] 刘鹏.超硬刀具高速铣削钛合金的基础研究[D].南京:南京航空航天大学,2011.
[10] 孙厚忠.PCD刀具高速铣削钛合金表面完整性研究[D].南京:南京航空航天大学,2012.
[11] 刘鹏,徐九华,傅玉灿.聚晶金刚石刀具高速铣削钛合金切削温度分析[J].哈尔滨工业大学学报,2011,43(11):95-100.LIU P,XU J H,FU Y C.Cutting Temperature in High Speed Milling of Titanium Alloy with Polycrystalline Diamond Tool[J].Journal of Harbin Institute of Technology,2011,43(11):95-100.
[12] LI A H,ZHAO J,DONG Y W,et al.Surface Integrity of High-speed Face Milled Ti-6Al-4V Alloy with PCD Tools[J].Machining Science and Technology,2013,17(3):464-482.
[13] 陈建军.硬质合金涂层立铣刀高速铣削钛合金切削性能研究[D].哈尔滨:哈尔滨理工大学,2014.
[14] 贾兴民,李剑峰,孙杰,等.基于切削力与振动特性钛合金铣削工艺参数研究[J].机械设计与制造,2014(12):204-208.JIA X M,LI J F,SUN J,et al.Study on Cutting Parameter Optimization for Milling Titanium Alloys Based on Cutting Force and Vibration Characteristics[J].Machinery Design & Manufacture,2014(12):204-208.
[15] 罗汉兵,赵军,李安海,等.高速铣削钛合金Ti6Al4V铣削力试验研究[J].组合机床与自动化加工技术,2011(5):18-20.LUO H B,ZHAO J,LI A H,et al.An Experment Study on Milling Forces in High Speed Milling Titanium Alloy[J].Modular Machine Tool & Automatic Manufacturing Technique,2011(5):18-20.
[16] 贾兴民,李剑峰,孙杰.钛合金TC4切削力试验研究[J].机械设计与制造,2014(10):139-142. JIA X M,LI J F,SUN J.Experimental Research on Cutting Force and Prediction Model for Titanium Alloy TC4[J].Machinery Design & Manufacture,2014(10):139-142.