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基于結(jié)合部動力學(xué)特性的立柱-主軸系統(tǒng)動力學(xué)模型研究
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國家重大科技專項(xiàng)資助項(xiàng)目(2009ZX04001-013、2009ZX04001-023)


Column-spindle System Dynamic Model Based on Dynamic Characteristics of Joints
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    針對某臥式加工中心動力學(xué)特性分析的需要,,論述了主要影響其動力學(xué)特性的立柱-主軸系統(tǒng)中導(dǎo)軌結(jié)合部、螺栓結(jié)合部,、滾珠絲杠結(jié)合部以及軸承4類結(jié)合面分布情況,,提出各類結(jié)合部動力學(xué)參數(shù)提取方法與有限元建模方法,。通過試驗(yàn)測試與有限元分析相結(jié)合的手段識別導(dǎo)軌結(jié)合部剛度與阻尼,利用赫茲接觸理論計(jì)算出滾珠絲杠接觸剛度,。在此基礎(chǔ)上,,建立了某臥式加工中心立柱-主軸系統(tǒng)有限元分析模型,通過測試立柱-主軸系統(tǒng)軸端頻率響應(yīng)函數(shù)驗(yàn)證了該有限元分析模型的準(zhǔn)確性,,并分析得出了該立柱-主軸系統(tǒng)導(dǎo)軌結(jié)合部對系統(tǒng)動態(tài)性能的影響情況,。

    Abstract:

    For the needs of dynamic analysis of the horizontal machining center, the distribution of linear guide, bolt joints, ball screw and bearing which main affect the dynamic characteristics of column-spindle system were discussed, then the dynamic parameters identifying method and finite element modeling method for these joints were presented. The stiffness and damping of linear guide were identified by the combination of experimental tests and finite element analysis, and the ball screw contact stiffness was calculated based on Hertz contact theory. On this basis, the finite element model for the column-spindle system of a horizontal machining center was established. The accuracy of the finite element analysis model was verified by testing the tool point frequency response function of column-spindle system. Then influence of linear guide for the dynamic characteristics of column-spindle system was analyzed.

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米良,殷國富,孫明楠,王小虎.基于結(jié)合部動力學(xué)特性的立柱-主軸系統(tǒng)動力學(xué)模型研究[J].農(nóng)業(yè)機(jī)械學(xué)報(bào),2011,42(12):202-207. Mi Liang, Yin Guofu, Sun Mingnan, Wang Xiaohu. Column-spindle System Dynamic Model Based on Dynamic Characteristics of Joints[J]. Transactions of the Chinese Society for Agricultural Machinery,2011,42(12):202-207.

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  • 在線發(fā)布日期: 2011-12-19
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