本文選題：串并聯(lián)機(jī)床 + 奇異約束條件�。� 參考：《農(nóng)業(yè)機(jī)械學(xué)報(bào)》2015年12期

【摘要】：為較好地保證機(jī)床動(dòng)力學(xué)特性和在復(fù)雜曲面加工過(guò)程中有較好的加工精度,基于機(jī)構(gòu)運(yùn)動(dòng)和受力規(guī)律,針對(duì)設(shè)計(jì)的3并聯(lián)2串聯(lián)混合型數(shù)控機(jī)床進(jìn)行動(dòng)力學(xué)耦合問(wèn)題研究。提出了一種聯(lián)合應(yīng)用凱恩方程及拉格朗日方程的動(dòng)力學(xué)解耦方法。建立了機(jī)床串聯(lián)及并聯(lián)部分完整的動(dòng)力學(xué)耦合模型并確定了耦合因素。進(jìn)行了復(fù)雜曲面零件的動(dòng)力學(xué)耦合仿真,仿真結(jié)果表明:建立的動(dòng)力學(xué)耦合模型是正確且可行的,符合運(yùn)動(dòng)學(xué)及受力規(guī)律。進(jìn)行了復(fù)雜曲面零件的切削加工實(shí)驗(yàn),機(jī)床運(yùn)行平穩(wěn)且速度較快,無(wú)較大奇異位置及耦合誤差。表面粗糙度結(jié)果反映了機(jī)床的運(yùn)動(dòng)精度,干涉條紋證明了機(jī)床受力均勻。實(shí)驗(yàn)結(jié)果表明理論分析正確,該研究方法和過(guò)程不僅能夠真實(shí)、主動(dòng)和有效地解決機(jī)床動(dòng)力學(xué)耦合問(wèn)題,而且可為后續(xù)機(jī)床精確伺服控制提供基礎(chǔ)。
[Abstract]:In order to ensure the dynamic characteristics of the machine tool and better machining accuracy in the process of complex curved surface machining, the dynamic coupling problem of the designed 3 parallel 2 series hybrid NC machine tools is studied based on the mechanism motion and force law.A dynamic decoupling method combining Kane equation and Lagrange equation is proposed.A complete dynamic coupling model of machine tool in series and parallel is established and the coupling factors are determined.The dynamic coupling simulation of complex curved surface parts is carried out. The simulation results show that the dynamic coupling model is correct and feasible, and accords with kinematics and force law.The machining experiments of complex curved surface parts are carried out. The machine tool runs stably and quickly, and has no big singular position and coupling error.The results of surface roughness reflect the motion accuracy of the machine, and the interference fringes prove that the force of the machine is uniform.The experimental results show that the theoretical analysis is correct, and the research method and process can not only solve the dynamic coupling problem of machine tools in real, active and effective manner, but also provide the basis for the precise servo control of the subsequent machine tools.
【作者單位】： 長(zhǎng)春工業(yè)大學(xué)應(yīng)用技術(shù)學(xué)院;上海交通大學(xué)機(jī)械與動(dòng)力工程學(xué)院;長(zhǎng)春工業(yè)大學(xué)汽車(chē)工程研究院;
【基金】：國(guó)家自然科學(xué)基金資助項(xiàng)目(61374138) 教育部新世紀(jì)人才資助項(xiàng)目(NCET-12-0731) 吉林省教育廳“十二五”科學(xué)技術(shù)研究資助項(xiàng)目(2012111)
【分類(lèi)號(hào)】：TG659
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本文編號(hào)：1747356