【摘要】：從實(shí)際加工角度出發(fā),研究了節(jié)流器結(jié)構(gòu)參數(shù)對Nanosys-1000超精密加工機(jī)床靜壓導(dǎo)軌承載特性的影響。利用流體分析軟件建立導(dǎo)軌承載油墊的有限元模型并搭建了相關(guān)靜壓導(dǎo)軌實(shí)驗(yàn)臺(tái),研究了進(jìn)口油壓為1.7 MPa,油膜厚度為36μm時(shí)承載油墊的壓力場分布特征,并通過對壓力場積分得到油膜承載力,求導(dǎo)得到油膜剛度,從而揭示不同結(jié)構(gòu)參數(shù)對靜壓導(dǎo)軌承載特性的影響。研究結(jié)果表明:節(jié)流器結(jié)構(gòu)參數(shù)中節(jié)流孔孔徑對機(jī)床承載特性影響最大,其次為節(jié)流孔孔長,出入口倒角對其影響甚微。導(dǎo)軌負(fù)載較小時(shí),擴(kuò)大節(jié)流孔孔徑與縮短節(jié)流孔孔長有助于改善靜壓導(dǎo)軌承載特性;但在重載條件下,縮小節(jié)流孔直徑,增加節(jié)流孔孔長反而更有利。將仿真數(shù)據(jù)與實(shí)驗(yàn)數(shù)據(jù)作對比,得到3個(gè)承載力測量點(diǎn)數(shù)據(jù)誤差分別為7.9%,6.9%,8.6%。最后根據(jù)研究成果,確定了Nanosys-1000機(jī)床靜壓導(dǎo)軌節(jié)流孔結(jié)構(gòu)參數(shù)。
[Abstract]:From the point of view of practical machining, the influence of throttle structure parameters on the bearing characteristics of the hydrostatic guide rail of Nanosys-1000 ultra-precision machining machine tool is studied. The finite element model of the bearing oil pad of the guide rail is established by using the fluid analysis software and the related hydrostatic guide rail test bench is built. The bearing oil is studied when the inlet oil pressure is 1.7 MPa and the oil film thickness is 36 micron. The results show that the diameter of throttle orifice has the greatest influence on the bearing characteristics of the machine tool, and the length of throttle orifice is the second, and the entrance and exit are reversed. When the rail load is small, enlarging the throttle aperture and shortening the length of the throttle aperture are helpful to improve the load-bearing characteristics of the hydrostatic guideway, but it is more advantageous to reduce the diameter of the throttle aperture and increase the length of the throttle aperture under heavy load condition. 7.9%, 6.9%, 8.6%. Finally, according to the research results, the structure parameters of the orifice of the static pressure guide rail of the Nanosys-1000 machine tool are determined.
【作者單位】： 中南大學(xué)高性能復(fù)雜制造國家重點(diǎn)實(shí)驗(yàn)室;中鐵工程裝備集團(tuán)有限公司;中國航空工業(yè)集團(tuán)北京航空精密機(jī)械研究所;常德煙草機(jī)械有限責(zé)任公司;
【基金】：國家自然科學(xué)基金資助項(xiàng)目(No.51175518) 國家863高技術(shù)研究發(fā)展計(jì)劃資助項(xiàng)目(No.2008AA000513)
【分類號】：TG502.3

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 龍威;包鋼;;進(jìn)口效應(yīng)對小孔節(jié)流靜壓空氣軸承靜特性的影響[J];軸承;2010年07期

2 夏毅敏;張剛強(qiáng);羅松保;張建明;;非球面超精密機(jī)床靜壓軸承溫度場的分布[J];光學(xué)精密工程;2012年08期

3 夏毅敏;楊添任;張剛強(qiáng);羅松保;禹宏云;;Nanosys-1000機(jī)床靜壓止推軸承流場分布規(guī)律及承載特性[J];光學(xué)精密工程;2013年01期

4 李文鋒;杜彥亭;李敏;賈廣輝;;精密數(shù)控車床靜壓導(dǎo)軌性能仿真研究[J];機(jī)床與液壓;2012年05期

5 袁巨龍;張飛虎;戴一帆;康仁科;楊輝;呂冰海;;超精密加工領(lǐng)域科學(xué)技術(shù)發(fā)展研究[J];機(jī)械工程學(xué)報(bào);2010年15期

6 李勇;張向陽;謝曉丹;;大口徑光學(xué)鏡面超精密加工機(jī)床的研制[J];納米技術(shù)與精密工程;2010年05期

7 袁巨龍;吳U，

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