不等齿距插铣刀铣削稳定域的预测与验证
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摘要
插铣加工会产生巨大的振动,影响工件的加工质量,减少振动在一定程度上能够提高工件加工质量。本文通过改变插铣刀齿距来控制振动,建立了不等齿距插铣刀的三维动力学模型,应用半离散法对其进行求解;通过模态分析试验得到模态参数,利用MATLAB软件绘制了稳定性叶瓣图;利用DEFORM软件以及试验数据验证了所构建的稳定性叶瓣图的正确性。
Plunge milling can produce huge vibration,which affects the machining quality of the workpiece.Reducing vibration can improve the machining quality of the workpiece to a certain extent.In this paper,the vibration is controlled by changing the tooth spacing of the plunge milling cutter.Firstly,a three-dimensional dynamic model of the plunge milling cutter with unequal pitch is established and solved by using semi-discrete method.The modal parameters are obtained by modal analysis test,and the stability lobes diagram is drawn by MATLAB.Finally,DEFORM software and experimental data are used to verify the correctness of the stability lobes diagram.
Plunge milling can produce huge vibration,which affects the machining quality of the workpiece.Reducing vibration can improve the machining quality of the workpiece to a certain extent.In this paper,the vibration is controlled by changing the tooth spacing of the plunge milling cutter.Firstly,a three-dimensional dynamic model of the plunge milling cutter with unequal pitch is established and solved by using semi-discrete method.The modal parameters are obtained by modal analysis test,and the stability lobes diagram is drawn by MATLAB.Finally,DEFORM software and experimental data are used to verify the correctness of the stability lobes diagram.
引文
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[18]王志奎.以DEFORM-3D实现花键轴精密冷滚轧成形模拟[J].现代制造工程,2009,2009(9):58-61.
[2]Ko J H,Altintas Y.Time domain model of plunge milling operation[J].International Journal of Machine Tools & Manufacture,2007,47(9):1351-1361.
[3]卢晓红,王凤晨,王华,等.铣削过程颤振稳定性分析的研究进展[J].振动与冲击,2016,35(1):74-82.
[4]汤爱民,周志雄,曾滔.不等齿距三刃高速立铣刀的动平衡及设计[J].机械工程学报,2011,47(13):180-185.
[5]Slavicek J.The effect of irregular tooth pitch on stability of milling[C].Proc of MTDR Conf,1965,6:15-22.
[6]姜彬.高速面铣刀切削稳定性及其结构化设计方法研究[D].哈尔滨:哈尔滨理工大学,2008.
[7]Merrit H E.Theory of self-excited machine tool chatter[J].ASME Journal of Engineering for Industry,1965,87:447-454.
[8]Tamas I,Gabor S.Semi-discretization method for delayed systems[J].International Journal for Numerical Methods in Engineering,2010,55(5):503-518.
[9]Liu X W,Cheng K,Webb D,et al.Improved dynamic cutting force model in peripheral milling.Part I:theoretical model and simulation[J].International Journal of Advanced Manufacturing Technology,2002,20(9):631-638.
[10]Attanasio A,Ceretti E,Rizzuti S,et al.3D finite element analysis of tool wear in machining[J].CIRP Annals-Manufacturing Technology,2008,57(1):61-64.
[11]侯志刚,赵军,徐立强,等.多层复合涂层刀具切削过程的三维有限元仿真[J].现代制造工程,2011(1):85-87,110.
[12]覃康才,冯可芹,孙兰,等.减摩槽刀片切削过程的Deform仿真[J].工具技术,2011,45(2):57-59.
[13]刘强,李忠群.数控铣削加工过程仿真与优化[M].北京:航空工业出版社,2011.
[14]Wan M,Zhang W H,Dang J W,et al.A unified stability prediction method for milling process with multiple delays[J].International Journal of Machine Tools & Manufacture,2010,50(1):29-41.
[15]宋清华.高速铣削稳定性及加工精度研究[D].济南:山东大学,2009.
[16]Farkas M.Periodic motions[M].Springer New York,1994.
[17]赵鹏仕.基于切削力仿真与精细积分建模的铣削稳定域研究[D].大连:大连理工大学,2014.
[18]王志奎.以DEFORM-3D实现花键轴精密冷滚轧成形模拟[J].现代制造工程,2009,2009(9):58-61.