【摘要】：針對(duì)立銑加工系統(tǒng)的刀具子結(jié)構(gòu)和刀柄子結(jié)構(gòu)結(jié)合部研究了一種兩點(diǎn)結(jié)合導(dǎo)納綜合動(dòng)力學(xué)模型。采用導(dǎo)納綜合法研究了兩點(diǎn)結(jié)合模型的刀尖點(diǎn)位移導(dǎo)納計(jì)算公式。利用Ansys軟件進(jìn)行了刀具子結(jié)構(gòu)和刀柄子結(jié)構(gòu)位移導(dǎo)納分析,導(dǎo)出位移導(dǎo)納數(shù)據(jù)。采用Matlab軟件編寫(xiě)兩點(diǎn)結(jié)合導(dǎo)納綜合法程序,獲得了刀尖點(diǎn)位移導(dǎo)納函數(shù)。通過(guò)Ansys軟件建立了刀具子結(jié)構(gòu)和刀柄子結(jié)構(gòu)整體有限元模型,分析獲得了刀尖點(diǎn)位移導(dǎo)納函數(shù)。與兩點(diǎn)結(jié)合導(dǎo)納綜合法分析結(jié)果進(jìn)行比較,并計(jì)算兩者相對(duì)誤差,結(jié)果表明:在關(guān)注頻率范圍內(nèi)相對(duì)誤差最大為0.7%,試驗(yàn)結(jié)果與兩點(diǎn)結(jié)合導(dǎo)納綜合法分析結(jié)果具有很好的一致性。
[Abstract]:A two-point combined admittance comprehensive dynamic model is studied for the joint of tool substructure and cutter shank substructure in the end milling system. In this paper, the displacement admittance formula of knife tip is studied by using admittance synthesis method. The displacement admittance analysis of tool substructure and cutter shank substructure is carried out with Ansys software, and the displacement admittance data are derived. The displacement admittance function at the tip of the cutter is obtained by using the program of two points combined with the admittance synthesis method written by Matlab software. The finite element models of tool substructure and tool shank substructure are established by Ansys software, and the displacement admittance function of cutter tip is obtained. The results are compared with the results of two-point combined admittance synthesis method and the relative errors of the two methods are calculated. The results show that the maximum relative error is 0.7 in the range of frequency of concern. The experimental results are in good agreement with the results of two-point combined admittance analysis.
【作者單位】： 東北大學(xué)機(jī)械工程與自動(dòng)化學(xué)院;
【基金】：國(guó)家自然科學(xué)基金項(xiàng)目(51105067) 教育部基本科研業(yè)務(wù)費(fèi)項(xiàng)目(N120403011)
【分類(lèi)號(hào)】：TG54

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