基于電流變液的深孔鉆削顫振抑制研究
發(fā)布時(shí)間:2019-07-30 19:31
【摘要】:針對(duì)目前深孔加工過(guò)程中顫振難以抑制,只能通過(guò)傳統(tǒng)的加工經(jīng)驗(yàn)判斷的問(wèn)題,提出了一種利用電流變液來(lái)抑制的方法.詳細(xì)分析了電流變液的抑振機(jī)理,對(duì)比了剪切式、流動(dòng)式和復(fù)合式三種工作模式,選擇復(fù)合式用于抑制深孔機(jī)床鉆削顫振;并根據(jù)鉆削系統(tǒng)的動(dòng)力學(xué)模型,推導(dǎo)出安裝電流變液阻尼器后的系統(tǒng)動(dòng)力學(xué)方程;最后利用MATLAB/Simulink仿真驗(yàn)證方法的可行性.振動(dòng)時(shí)域圖的對(duì)比結(jié)果表明,電流變液阻尼器可以有效地抑制鉆削過(guò)程中顫振的發(fā)生.
[Abstract]:In order to solve the problem that flutter is difficult to be suppressed in the process of deep hole machining and can only be judged by traditional machining experience, a method of using electrorheological fluid to suppress flutter is proposed. The vibration suppression mechanism of electrorheological fluid is analyzed in detail, and the shear, fluid and compound working modes are compared, and the compound type is selected to suppress the drilling chatter of deep hole machine tool. According to the dynamic model of drilling system, the dynamic equation of the system after installing electrorheological fluid dampers is deduced. Finally, the feasibility of the method is verified by MATLAB/Simulink simulation. The results of vibration time domain diagram show that electrorheological fluid dampers can effectively suppress flutter during drilling.
【作者單位】: 中北大學(xué)機(jī)械與動(dòng)力工程學(xué)院;山西省深孔加工工程技術(shù)研究中心;
【基金】:科技部國(guó)際合作項(xiàng)目(2013DFA70770) 國(guó)家自然基金資助項(xiàng)目(51175482)
【分類號(hào)】:TG52
本文編號(hào):2521103
[Abstract]:In order to solve the problem that flutter is difficult to be suppressed in the process of deep hole machining and can only be judged by traditional machining experience, a method of using electrorheological fluid to suppress flutter is proposed. The vibration suppression mechanism of electrorheological fluid is analyzed in detail, and the shear, fluid and compound working modes are compared, and the compound type is selected to suppress the drilling chatter of deep hole machine tool. According to the dynamic model of drilling system, the dynamic equation of the system after installing electrorheological fluid dampers is deduced. Finally, the feasibility of the method is verified by MATLAB/Simulink simulation. The results of vibration time domain diagram show that electrorheological fluid dampers can effectively suppress flutter during drilling.
【作者單位】: 中北大學(xué)機(jī)械與動(dòng)力工程學(xué)院;山西省深孔加工工程技術(shù)研究中心;
【基金】:科技部國(guó)際合作項(xiàng)目(2013DFA70770) 國(guó)家自然基金資助項(xiàng)目(51175482)
【分類號(hào)】:TG52
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