【摘要】：機(jī)床導(dǎo)軌作為機(jī)床的關(guān)鍵功能部件,對機(jī)床性能的提升起著重要作用。目前,由于滾珠導(dǎo)軌具有低摩擦、高承載、高剛度、易安裝等優(yōu)點(diǎn),被廣泛應(yīng)用于機(jī)床上,但滾珠導(dǎo)軌的抗振性差。液體靜壓導(dǎo)軌具有比滾珠導(dǎo)軌更好的阻尼特性和運(yùn)動精度,但傳統(tǒng)液體靜壓導(dǎo)軌成本較高、空間占用大、安裝調(diào)試?yán)щy、通用性差。因此本文綜合兩種導(dǎo)軌的優(yōu)點(diǎn)設(shè)計了一種緊湊型油靜壓導(dǎo)軌,并對該類型靜壓導(dǎo)軌進(jìn)行了系列化設(shè)計和動靜特性分析。本文以液體靜壓導(dǎo)軌設(shè)計原理為理論依據(jù),以上銀滾珠導(dǎo)軌結(jié)構(gòu)尺寸為系列化設(shè)計參數(shù),設(shè)計了三個系列緊湊型油靜壓導(dǎo)軌(JC45、JC55和JC65),并設(shè)計了靜壓支承的重要部件節(jié)流器,該節(jié)流器為節(jié)流比可調(diào)縫隙節(jié)流器,節(jié)流比調(diào)節(jié)范圍為1.5～3。此外,基于液體靜壓支承理論對緊湊型油靜壓導(dǎo)軌單滑塊的性能進(jìn)行了分析,結(jié)果顯示不同系列緊湊型油靜壓導(dǎo)軌單滑塊的承載力和剛度性能隨導(dǎo)軌系列數(shù)的增大而增大,且變化關(guān)系呈非線性�；诮Y(jié)構(gòu)件的彈性變形理論和流體潤滑理論,建立了緊湊型靜壓導(dǎo)軌單滑塊的流固耦合剛度模型。通過對模型的分析,發(fā)現(xiàn)結(jié)構(gòu)中的變形導(dǎo)致了剛度性能的下降。然后,從改變滑塊結(jié)構(gòu)參數(shù)、補(bǔ)償結(jié)構(gòu)變形和調(diào)節(jié)節(jié)流比三個方面討論了減小變形對剛度性能的影響,分析顯示增加滑塊寬度能有效減小滑塊變形,補(bǔ)償變形量能有效提高導(dǎo)軌剛度,當(dāng)變形對節(jié)流比的影響較小時,調(diào)節(jié)節(jié)流比對導(dǎo)軌剛度的影響不明顯。通過將油墊等效為彈簧-阻尼系統(tǒng),建立了緊湊型靜壓導(dǎo)軌多滑塊支承工作臺的動力學(xué)模型。研究了同一系列緊湊型油靜壓導(dǎo)軌不同尺寸工作臺及不同系列緊湊型靜壓導(dǎo)軌工作臺的動靜剛度以及階躍響應(yīng)時間。研究發(fā)現(xiàn)不同系列相同尺寸的工作臺的動靜剛度及階躍響應(yīng)時間隨導(dǎo)軌系列數(shù)的增大而增大,對于相同系列工作臺,改變工作臺的特定尺寸可以改變工作臺在特定方向上的動靜性能及響應(yīng)時間,且結(jié)構(gòu)越大動靜剛度越大,工作臺的階躍響應(yīng)時間也越長。
[Abstract]:As the key functional part of machine tool, the guide rail plays an important role in improving the performance of machine tool. At present, ball guide rail is widely used in machine tools because of its advantages of low friction, high bearing capacity, high stiffness and easy installation, but the vibration resistance of ball guide rail is poor. The hydrostatic guide rail has better damping characteristics and motion accuracy than the ball guide rail, but the traditional hydrostatic guide rail has the advantages of high cost, large space occupation, difficult installation and debugging, and poor versatility. Therefore, a compact oil hydrostatic guide is designed based on the advantages of the two kinds of guide rails, and the series design and dynamic and static characteristics of this type of hydrostatic guide rail are analyzed. Based on the design principle of hydrostatic guide rail and the series design parameters of the silver ball guide rail, three series of compact oil hydrostatic guide rails (JC45, JC55 and JC65) are designed in this paper, and an important component throttle for hydrostatic support is designed. The throttle is a throttle ratio adjustable slot throttle, the throttle ratio adjustment range is 1.5 ~ 3. In addition, based on the theory of hydrostatic pressure support, the performance of single slide block of compact oil hydrostatic guide rail is analyzed. The results show that the bearing capacity and stiffness performance of single slide block of different series of compact oil hydrostatic guide rail increase with the increase of the number of guide rail series. The relation of variation is nonlinear. Based on the elastic deformation theory and fluid lubrication theory of structural parts, the fluid-solid coupling stiffness model of single slider of compact hydrostatic guideway is established. Through the analysis of the model, it is found that the deformation in the structure leads to the degradation of the stiffness performance. Then, the influence of reducing deformation on stiffness performance is discussed from three aspects: changing the structural parameters of the slider, compensating the structural deformation and adjusting the throttling ratio. The analysis shows that increasing the width of the slider can effectively reduce the deformation of the slider. The stiffness of guide rail can be improved effectively by compensating deformation. When the effect of deformation on throttle ratio is small, the influence of adjusting throttle ratio on the stiffness of guide rail is not obvious. By equivalent the oil cushion to the spring-damping system, the dynamic model of the compact hydrostatic guide rail with multi-slider supporting worktable is established. The static and dynamic stiffness and step response time of the same series of compact hydrostatic guide rail with different sizes and different series of compact hydrostatic guide rail worktables are studied. It is found that the dynamic and static stiffness and step response time of different series of worktables of the same size increase with the increase of the number of guide rail series. Changing the specific size of the table can change the dynamic and dynamic performance and response time of the table in a particular direction, and the larger the structure, the greater the dynamic and static stiffness, and the longer the step response time of the table is.
【學(xué)位授予單位】：山東科技大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2017
【分類號】：TG502

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 王炯琨;彭小強(qiáng);關(guān)朝亮;鐵貴鵬;彭文強(qiáng);;小孔節(jié)流閉式液體靜壓導(dǎo)軌流場分布規(guī)律及承載特性[J];機(jī)械科學(xué)與技術(shù);2016年07期

2 王仁宗;于賀春;張國慶;張洪;龔希美;;薄膜反饋節(jié)流器特性的流固耦合研究[J];液壓與氣動;2015年06期

3 王智偉;查俊;陳耀龍;趙萬華;;流固耦合對油靜壓導(dǎo)軌動靜特性的影響[J];機(jī)械工程學(xué)報;2014年09期

4 趙建華;高殿榮;;油膜厚度對閉式液體靜壓導(dǎo)軌性能的影響[J];中國機(jī)械工程;2013年11期

5 郝樂;劉一磊;郝瑾;馬波;成法坤;汪洋;;液體靜壓導(dǎo)軌的仿真和實(shí)驗(yàn)?zāi)B(tài)分析[J];重型機(jī)械;2013年03期

6 張雯;李東升;禹靜;尹健龍;;氣體靜壓導(dǎo)軌氣膜厚度的電容式測試方法[J];傳感器與微系統(tǒng);2012年07期

7 李文鋒;杜彥亭;賈廣輝;;精密數(shù)控車床靜壓導(dǎo)軌的設(shè)計[J];機(jī)床與液壓;2011年23期

8 高殿榮;趙建華;張作超;鄭丹;;PM流量控制器參數(shù)對液體靜壓導(dǎo)軌性能影響的研究[J];機(jī)械工程學(xué)報;2011年18期

9 張建明;;現(xiàn)代超精密加工技術(shù)和裝備的研究與發(fā)展[J];航空精密制造技術(shù);2008年01期

10 李國;董申;張景和;王海峰;張順國;;大型非球曲面超精密復(fù)合加工機(jī)床[J];納米技術(shù)與精密工程;2006年01期

相關(guān)博士學(xué)位論文 前2條

1 佐曉波;超精密機(jī)床自補(bǔ)償液體靜壓軸承設(shè)計與特性研究[D];國防科學(xué)技術(shù)大學(xué);2013年

2 于曉東;重型靜壓推力軸承力學(xué)性能及油膜態(tài)數(shù)值模擬研究[D];東北林業(yè)大學(xué);2007年

相關(guān)碩士學(xué)位論文 前9條

1 朱濤;超精密機(jī)床液體靜壓導(dǎo)軌的設(shè)計與可靠性分析[D];廣東工業(yè)大學(xué);2015年

2 王炯琨;液體靜壓導(dǎo)軌設(shè)計優(yōu)化與數(shù)控修形技術(shù)[D];國防科學(xué)技術(shù)大學(xué);2014年

3 蘇展;重型數(shù)控立式車床靜壓導(dǎo)軌的設(shè)計方法研究[D];大連理工大學(xué);2013年

4 翟亞楠;精密機(jī)床靜壓導(dǎo)軌的設(shè)計及性能分析[D];東北大學(xué);2012年

5 張亮;開式靜壓導(dǎo)軌載荷自適應(yīng)恒壓力供油系統(tǒng)的研究[D];東華大學(xué);2011年

6 劉一磊;超精密機(jī)床液體靜壓導(dǎo)軌靜動態(tài)特性分析及模態(tài)參數(shù)識別[D];哈爾濱工業(yè)大學(xué);2010年

7 應(yīng)曄;用于液體靜壓導(dǎo)軌的花崗巖材料結(jié)構(gòu)分析與試驗(yàn)研究[D];哈爾濱工業(yè)大學(xué);2008年

8 龐占東;大型超精密機(jī)床液壓軸系幅板結(jié)構(gòu)優(yōu)化設(shè)計[D];哈爾濱工業(yè)大學(xué);2007年

9 張曉彤;開式液體靜壓導(dǎo)軌油膜厚度控制方案的研究[D];哈爾濱理工大學(xué);2007年

，

本文編號：2199349