三維橢圓振動(dòng)輔助切削裝置設(shè)計(jì)與優(yōu)化研究
[Abstract]:Three-dimensional elliptical vibration assisted cutting (EVAC) is a kind of machining method with wide application prospect. Whether 3D EVAC can show the best performance in practical machining depends on the performance of 3D EVAC device. At present, the developed 3D EVAC device has some problems, such as the single elliptical trajectory form, the poor adjustable elliptical trajectory range and so on. In this paper, a 3D EVAC device with multiple elliptical vibration trajectories is studied. The performance optimization method of the designed device is explored from the aspects of layout and dimension optimization. At first, three kinds of vertical sub-chain and flexure hinge amplification structure are adopted to design the three-dimensional EVAC device. The output trajectory is adjustable, and the three-dimensional elliptical vibration trajectory is analyzed. Secondly, the static checking and dynamic transient analysis of the designed device are carried out by using finite element method, which verifies the various output modes of the tool tip trajectory. Finally, according to the results of finite element analysis, the flexure hinge optimization model of 3D EVAC device is established from the aspect of layout and dimension. The dimension parameters and structural layout parameters of the design device are analyzed and optimized, and the optimum parameters of the device are obtained.
【作者單位】: 南京航空航天大學(xué)機(jī)電學(xué)院;
【基金】:國(guó)家自然科學(xué)基金項(xiàng)目(51675277) 中央高校基本科研業(yè)務(wù)費(fèi)專項(xiàng)資金項(xiàng)目(NS2016048) 研究生創(chuàng)新基地(實(shí)驗(yàn)室)開(kāi)放基金項(xiàng)目(kfjj20150518)資助
【分類號(hào)】:TH122
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