基于切削速度和高压润滑的钛合金切削磨损研究
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摘要
介绍了在传统切削和高压喷射辅助切削方式下WC/Co硬质合金刀具对钛合金Ti17的加工,并进行了对比分析。在不同的切削速度和喷射压力下,研究了刀具的磨损演化以及切削力和轴向力的变化,并进行了相应讨论。在切削速度为50～100 m/min和喷射压力为5～25 MPa之间进行试验,确定了最佳润滑喷射压力和切削速度。当喷射压力为10 MPa时,最佳切削速度v_c为81.40 m/min,与常规润滑方式相比,刀具寿命提高约9倍,效率可提高约30%。
The machining of titanium alloy Ti17 with WC/Co cemented carbide cutting tools under the traditional cutting and high-pressure water jet assistance cutting methods was introduced, and a comparative analysis was made.Under the different cutting speeds and the water jet pressures, the evolution of tool wear and the changes of cutting forces and axial force were studied,the corresponding discussion was also carried out. The optimum water jet pressure and cutting speed were determined by experiments between cutting speed of 50～100 m/min and water jet pressure of 5～25 MPa. When the water jet pressure is 10 MPa,the best cutting speed is 81.40 m/min.Compared to conventional lubrication,the tool life is increased by about 9 times and the efficiency is increased by about 30%.
The machining of titanium alloy Ti17 with WC/Co cemented carbide cutting tools under the traditional cutting and high-pressure water jet assistance cutting methods was introduced, and a comparative analysis was made.Under the different cutting speeds and the water jet pressures, the evolution of tool wear and the changes of cutting forces and axial force were studied,the corresponding discussion was also carried out. The optimum water jet pressure and cutting speed were determined by experiments between cutting speed of 50～100 m/min and water jet pressure of 5～25 MPa. When the water jet pressure is 10 MPa,the best cutting speed is 81.40 m/min.Compared to conventional lubrication,the tool life is increased by about 9 times and the efficiency is increased by about 30%.
引文
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[2] 任开强.高强度钛合金的高速铣削研究[D].南京:南京航空航天大学,2014.
[3] 范依航,郑敏利,杨树财,等.基于刀具磨损和切屑形成对切削Ti6Al4V的切削力特性研究[J].制造技术与机床,2011(8):134-142.FAN Y H,ZHENG M L,YANG S C,et al.Characteristics of Cutting Force in Relation to Tool Wear and Chip Formation while Cutting Ti6AI4V Using Carbide Inserts[J].Manufacturing Technology & Machine Tool,2011(8):134-142.
[4] 李绍华.不同刀具材料与钛合金的摩擦磨损特性实验研究[D].济南:山东大学,2010.
[5] 张士军.涂层刀具切削温度及其测试技术研究[D].济南:山东大学,2015.
[6] DEVILLEZ A,SCHNEIDER F,DOMINIAK S,et al.Cutting Forces and Wear in Dry Machining of Inconel 718 with Coated Carbide Tools[J].Wear,2017,262(8):31-42.
[7] 王志鑫.两种典型航空材料数控铣削工艺研究与优化[D].大连:大连理工大学, 2005.
[8] VENUGOPAL K,PAUL S,CHATTOPADHYAY A.Growth of Tool Wear in Turning of Ti-6Al-4V Alloy under Cryogenic Cooling[J].Wear,262(10):1-8.
[9] 王珉.钛合金铣削加工中刀具磨损的研究[D].南京:南京航空航天大学,2014.
[10] 秦龙,董海,张弘弢,等.钛合金切削加工中刀具寿命和刀具磨损的研究[J].工具技术,2010,44(7):16-19.QIN L,DONG H,ZHANG H T,et al.Research on Tool Life and Wear in Cutting Titanium Alloy[J].Tool Engineering,2010,44(7):16-19.
[11] WANIGARATHNE P,KARDEKAR A,DILLON O,et al.Progressive Tool-wear in Machining with Coated Grooved Tools and Its Correlation with Cutting Temperature[J].Wear,259(7):15-24.
[12] 易湘斌,焦爱胜,常文春,等.不同冷却润滑条件下TB6钛合金高速铣削切削力实验研究[J].润滑与密封,2017,42(9):92-97.YI X B,JIAO A S,CHANG W C,et al.Research on Cutting Force of High Speed Milling TB6 in Different Cooling Lubricating Conditions[J].Lubrication Engineering,2017,42(9):92-97.
[13] 易湘斌,芮执元,李宝栋,等.不同冷却润滑条件下TB6钛合金高速切削表面完整性研究[J].润滑与密封,2018,43(11):36-41.YI X B,RUI Z Y,LI B D,et al.Research on TB6 High Speed Machining Surface Integrity under Different Cooling Lubricating Conditions[J].Lubrication Engineering,2018,43(11):36-41.