密齿硬质合金涂层刀具铣削TC4钛合金试验研究
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摘要
利用单因素试验方法进行了密齿硬质合金涂层刀具铣削TC4钛合金试验,研究每齿进给量和切削速度对切削力、切削温度、加工表面粗糙度以及切屑形态的影响。结果表明:切削方向分力F_x、刀轴方向分力F_z随每齿进给量的增大而增大,进给方向分力F_y随每齿进给量的增加变化不大;切削速度小于75m/min时切削力随切削速度的增加下降较为明显;切削速度超过75m/min时切削力变化不大;切削温度受每齿进给量影响较大,且影响程度随进给量的增加而逐渐减小;随着每齿进给量f_z的增大,加工表面粗糙度值先减小后增大;在每齿进给量高于0.04mm/z时,密齿铣刀铣削TC4钛合金得到的切屑为螺卷状,且随每齿进给量的增加,切屑的曲率半径减小,随切削速度的增大,螺卷状切屑的螺距减小。
By using the single-factor test method,the TC4 titanium alloy milling test is performed with a fine-pitched milling cutter to determine the effect of feed rate and cutting speed per tooth on cutting force,cutting temperature,surface roughness and chip shape.The results show that the component forces in F_x and F_z directions increase,and the feed direction component force F_y does not change much with the increase of the feed rate per tooth;When the cutting speed is less than 75 m/min,the cutting force decreases with the increase of cutting speed,when the cutting speed exceeds 75 m/min,the cutting force does not change much.The cutting temperature is affected more by the feed rate,and the influence degree gradually decreases with the increase of the feed rate.With the increase of the feed rate,the machined surface roughness decreases first and then increases.When the feed per tooth is higher than 0.04 mm/z,the chips produced by the milling TC4 titanium alloy are coil-type,and the radius of the chip decreases with the increase of the feed rate.The pitch of the coil shaped chip reduces with the increase of cutting speed.
By using the single-factor test method,the TC4 titanium alloy milling test is performed with a fine-pitched milling cutter to determine the effect of feed rate and cutting speed per tooth on cutting force,cutting temperature,surface roughness and chip shape.The results show that the component forces in F_x and F_z directions increase,and the feed direction component force F_y does not change much with the increase of the feed rate per tooth;When the cutting speed is less than 75 m/min,the cutting force decreases with the increase of cutting speed,when the cutting speed exceeds 75 m/min,the cutting force does not change much.The cutting temperature is affected more by the feed rate,and the influence degree gradually decreases with the increase of the feed rate.With the increase of the feed rate,the machined surface roughness decreases first and then increases.When the feed per tooth is higher than 0.04 mm/z,the chips produced by the milling TC4 titanium alloy are coil-type,and the radius of the chip decreases with the increase of the feed rate.The pitch of the coil shaped chip reduces with the increase of cutting speed.
引文
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[2]赵树萍,吕双坤.钛合金在航空航天领域中的应用[J].钛工业进展,2002(6):18-21.
[3]陈明,安庆龙,刘志强.高速切削技术基础与应用[M].上海:上海科学技术出版社.2012.
[4]Smith G T. Cutting Tool Technology[M].London:Springer,2008:163.
[5]刘鹏,徐九华,冯素玲,等.PCD刀具高速铣削TA15钛合金切削力的研究[J].南京航空航天大学学报,2010,42(2):224-229.
[6]刘迎春,林琪,庞继有,等.切削用量对立铣加工钛合金Ti6Al4V切削力和切削温度影响规律的有限元仿真研究[J].工具技术,2012,46(10):3-6.
[7]Komanduri R,Hou Z B.A review of the experimental techniques for the measurement of heat and temperatures generated in some manufacturing processes and tribology[J].Tribology International,2001,34(10): 653-682.
[8]张俊,王拓,张星,等.超密齿面铣刀的铣削力波动特性及其影响[J].东北大学学报(自然科学版),2018,39(4):543-548.
[9]姚倡锋,武导侠,靳淇超,等. TB6 钛合金高速铣削表面粗糙度与表面形貌研究[J].航空制造技术,2012(21):90-93.
[10]陈日曜.金属切削原理(第2版)[M].北京:机械工业出版社,1993.
[11]刘丽娟,吕明,武文革,等.高速铣削钛合金Ti-6Al-4V切屑形态试验研究[J].机械工程学报,2015,51(3):196-205.