本文選題：主軸軸承溫度場(chǎng) + 光纖光柵溫度傳感器��； 參考：《武漢理工大學(xué)》2015年碩士論文

【摘要】：熱誤差是影響機(jī)床加工精度的重要因素之一。主軸軸承溫度場(chǎng)變化與主軸熱誤差直接相關(guān),通過監(jiān)測(cè)主軸軸承溫度場(chǎng)分析引起主軸熱誤差的因素,進(jìn)而完成對(duì)主軸加工誤差的補(bǔ)償。目前很多方法都應(yīng)用在主軸軸承的溫度場(chǎng)測(cè)量上,然而傳統(tǒng)方法大多數(shù)都是基于電類傳感器,這些傳統(tǒng)測(cè)量方法仍然存在著諸多缺點(diǎn),如布線復(fù)雜、易受電磁干擾、穩(wěn)定性較差,難以實(shí)現(xiàn)分布式監(jiān)測(cè)等;另一方面,光纖光柵作為一種新型溫度傳感器,除了具有普通傳感器的優(yōu)點(diǎn)外,還具有體積小、不受電磁干擾、耐腐蝕、穩(wěn)定性好,能夠在一根光纖中串接多個(gè)不同波長(zhǎng)的光柵進(jìn)行分布式測(cè)量等特點(diǎn),因此光纖光柵溫度傳感器非常適用于主軸軸承溫度場(chǎng)的測(cè)量。在這種背景下本文提出將光纖光柵傳感技術(shù)應(yīng)用于主軸軸承溫度場(chǎng)的監(jiān)測(cè)中。本文介紹了目前主軸軸承溫度場(chǎng)測(cè)量的研究現(xiàn)狀和光纖光柵溫度測(cè)量的研究現(xiàn)狀;對(duì)復(fù)雜的主軸軸承系統(tǒng)進(jìn)行了描述,并指出軸承溫度分布隨著切削力、轉(zhuǎn)速的變化而變化,需要一種能夠?qū)崿F(xiàn)分布式測(cè)量的溫度傳感器對(duì)軸承進(jìn)行實(shí)時(shí)監(jiān)測(cè);另外,介紹了光纖光柵溫度感知原理以及光纖光柵主軸軸承溫度場(chǎng)的監(jiān)測(cè)方法,并對(duì)光纖光柵溫度傳感器進(jìn)行了實(shí)驗(yàn)研究,實(shí)驗(yàn)結(jié)果表明光纖光柵溫度傳感器具有良好的線性度以及測(cè)溫靈敏度,能夠準(zhǔn)確穩(wěn)定地監(jiān)測(cè)主軸軸承的溫度場(chǎng)分布;分析了影響主軸軸承溫度場(chǎng)變化的因素,運(yùn)用ANSYS有限元分析軟件對(duì)主軸軸承溫度場(chǎng)進(jìn)行了仿真分析,得到了不同工況下的主軸軸承溫度場(chǎng)分布規(guī)律,為主軸軸承溫度場(chǎng)測(cè)量提供了依據(jù);隨后針對(duì)主軸軸承設(shè)計(jì)并搭建了溫度場(chǎng)監(jiān)測(cè)系統(tǒng),分別測(cè)量了主軸軸承在不同徑向負(fù)載、不同軸向負(fù)載、不同轉(zhuǎn)速下的溫度場(chǎng),通過實(shí)驗(yàn)驗(yàn)證了光纖光柵溫度傳感器能夠準(zhǔn)確而穩(wěn)定地測(cè)量主軸軸承溫度場(chǎng);最后對(duì)本文的研究成果以及問題進(jìn)行了總結(jié)和展望。
[Abstract]:Thermal error is one of the important factors that affect the machining accuracy of machine tools. The variation of temperature field of spindle bearing is directly related to the thermal error of spindle. By monitoring the analysis of temperature field of spindle bearing, the factors causing the thermal error of spindle are analyzed, and the compensation of machining error of spindle is completed. At present, many methods are used to measure the temperature field of spindle bearings. However, most of the traditional methods are based on electrical sensors. These traditional methods still have many disadvantages, such as complex wiring and easy electromagnetic interference. On the other hand, as a new type of temperature sensor, fiber Bragg grating (FBG), as a new temperature sensor, not only has the advantages of ordinary sensors, but also has the advantages of small size, no electromagnetic interference, good corrosion resistance and good stability. The fiber grating temperature sensor is suitable for measuring the temperature field of spindle bearing because it can be used to measure the temperature field of spindle bearing in series with several different wavelength gratings in a single fiber. In this context, fiber Bragg grating sensing technology is applied to the temperature field monitoring of spindle bearings. This paper introduces the present research status of temperature field measurement of spindle bearing and the research status of fiber grating temperature measurement, describes the complex spindle bearing system, and points out that the temperature distribution of bearing changes with the change of cutting force and rotational speed. A kind of temperature sensor which can realize distributed measurement is needed to monitor the bearing in real time. In addition, the principle of fiber grating temperature sensing and the method of monitoring the temperature field of fiber Bragg grating spindle bearing are introduced. The experimental results show that the FBG temperature sensor has good linearity and temperature sensitivity, and can accurately and stably monitor the temperature field distribution of the spindle bearing. The factors influencing the temperature field of the spindle bearing are analyzed. The temperature field of the spindle bearing is simulated and analyzed by using the ANSYS finite element analysis software, and the distribution law of the temperature field of the spindle bearing under different working conditions is obtained. Then the temperature field monitoring system is designed and built for spindle bearing. The temperature field of spindle bearing under different radial load, different axial load and different rotational speed is measured respectively. The experimental results show that the fiber Bragg grating temperature sensor can accurately and stably measure the temperature field of the spindle bearing. Finally, the research results and problems of this paper are summarized and prospected.
【學(xué)位授予單位】：武漢理工大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：TG502.3

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 王燕霜;祝海峰;劉U，

本文編號(hào)：1974553