【摘要】：液體靜壓軸承、滑軌或者傳動(dòng)機(jī)構(gòu),都是利用外部提供的流體壓力設(shè)備或軸承或滑軌內(nèi)具有多腔室的結(jié)構(gòu)設(shè)計(jì),來(lái)保持流體壓力的穩(wěn)定。對(duì)于液體靜壓軸承,除了軸承本身以外,還必須有節(jié)流器及供油裝置。薄膜反饋節(jié)流器在國(guó)外高檔機(jī)械設(shè)備中已得到了大量的應(yīng)用,且對(duì)我國(guó)形成了技術(shù)壟斷,阻礙了我國(guó)精密液體靜壓主軸技術(shù)的發(fā)展及推廣應(yīng)用。針對(duì)薄膜反饋節(jié)流器的研究,首先建立物理模型,通過(guò)有限元軟件ANSYS建立耦合模型;對(duì)節(jié)流器流體與金屬?gòu)椥员∧みM(jìn)行雙向流固耦合分析,研究膜片上的壓力分布對(duì)節(jié)流器節(jié)流特性的影響,得到不同壓力作用下金屬?gòu)椥员∧さ淖冃?并總結(jié)出其變化規(guī)律。針對(duì)薄膜的性能和變形系數(shù)進(jìn)行了分析研究,得到變形系數(shù)與薄膜厚度之間的關(guān)系;對(duì)薄膜反饋節(jié)流器的結(jié)構(gòu)進(jìn)行優(yōu)化設(shè)計(jì),并對(duì)其與液體靜壓主軸的裝配體進(jìn)行設(shè)計(jì)分析,得到一種薄膜反饋節(jié)流器新結(jié)構(gòu);分析節(jié)流器材料特性與軸承特性的關(guān)系,并對(duì)薄膜的壓力變形和硬度分別進(jìn)行了實(shí)驗(yàn),為節(jié)流器參數(shù)的選取提供依據(jù)。最后對(duì)薄膜反饋節(jié)流器液體靜壓主軸的靜態(tài)特性和動(dòng)態(tài)特性進(jìn)行了實(shí)驗(yàn)分析,對(duì)其回轉(zhuǎn)精度、剛度和承載能力進(jìn)行實(shí)驗(yàn)研究,得到薄膜反饋節(jié)流器對(duì)液體靜壓軸承性能的影響數(shù)據(jù),綜合各種影響因素并對(duì)節(jié)流器的設(shè)計(jì)提出建設(shè)性意見(jiàn)。
[Abstract]:Hydrostatic bearings, sliding rails or transmission mechanisms are designed to maintain the stability of fluid pressure by using externally provided fluid pressure equipment or structural design of multi-chamber chambers in bearings or sliding rails. For hydrostatic bearings, in addition to the bearing itself, there must also be throttle and oil supply device. The thin-film feedback throttle has been widely used in foreign high-grade mechanical equipment, and has formed a technical monopoly in China, which hinders the development and application of precision hydrostatic spindle technology in China. In view of the research of thin-film feedback throttle, the physical model is established, the coupling model is established by finite element software ANSYS, and the two-way fluid-structure coupling analysis of the throttle fluid and metal elastic film is carried out. The influence of pressure distribution on the throttling characteristics of the throttle is studied. The deformation of the metal elastic film under different pressures is obtained and the variation law of the film is summarized. The relationship between the deformation coefficient and the film thickness is obtained, the structure of the film feedback throttle is optimized, and the assembly of the hydrostatic spindle is designed and analyzed. A new structure of thin-film feedback throttle is obtained, and the relationship between material characteristic and bearing characteristic of throttle is analyzed, and the pressure deformation and hardness of thin film are experimented respectively, which provides the basis for selecting the parameters of throttle. Finally, the static and dynamic characteristics of the hydrostatic spindle of the thin-film feedback throttle are analyzed experimentally, and the rotary accuracy, stiffness and bearing capacity of the spindle are studied experimentally. The influence data of thin-film feedback throttle on the performance of hydrostatic bearing were obtained, and some constructive suggestions on the design of the throttle were put forward.
【學(xué)位授予單位】：中原工學(xué)院
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類(lèi)號(hào)】：TH133.3

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本文編號(hào)：2217391