【摘要】：彈性發(fā)射加工是基于流體動(dòng)力潤(rùn)滑效應(yīng)獲取超光滑表面的一種重要方式,但是目前該方法在進(jìn)一步改善粗糙度上遇到瓶頸,本文為了突破這一問題,對(duì)雙轉(zhuǎn)彈性發(fā)射加工技術(shù)進(jìn)行系統(tǒng)研究,主要研究?jī)?nèi)容包括:(1)根據(jù)裝置所需性能,對(duì)雙轉(zhuǎn)彈性發(fā)射加工裝置進(jìn)行設(shè)計(jì)。從設(shè)計(jì)指標(biāo)、性能參數(shù)、關(guān)鍵部件選型和靜力學(xué)分析、裝置的穩(wěn)定性實(shí)驗(yàn)驗(yàn)證等幾個(gè)方面介紹拋光裝置設(shè)計(jì)過程。(2)通過Fluent仿真說明拋光間隙與流體剪切力的關(guān)系;建立拋光輪車削刀紋和徑向跳動(dòng)對(duì)間隙影響的模型;通過對(duì)拋光顆粒的受力分析說明自轉(zhuǎn)轉(zhuǎn)速對(duì)材料去除效率和彈性域去除的影響;通過仿真說明公轉(zhuǎn)下的流場(chǎng)特性及公轉(zhuǎn)轉(zhuǎn)速對(duì)流體剪切力的影響;通過去除函數(shù)實(shí)驗(yàn)驗(yàn)證理論及仿真的正確性。(3)以光學(xué)元件表面粗糙度值為指標(biāo),按照一定優(yōu)化策略,通過包括拋光間隙實(shí)驗(yàn)、自轉(zhuǎn)轉(zhuǎn)速實(shí)驗(yàn)和公轉(zhuǎn)轉(zhuǎn)速實(shí)驗(yàn)在內(nèi)的工藝實(shí)驗(yàn)對(duì)拋光參數(shù)進(jìn)行優(yōu)化,最終獲得一組最優(yōu)參數(shù),并在此組參數(shù)下獲得最小的粗糙度值。(4)按照優(yōu)化出的參數(shù),在不同材料上驗(yàn)證雙轉(zhuǎn)彈性發(fā)射加工獲取超光滑表面的效果。課題的研究將有助于推動(dòng)超光滑表面加工技術(shù)的發(fā)展,在理論指導(dǎo)和實(shí)踐應(yīng)用方面都具有重要意義。
[Abstract]:Elastic emission machining is an important way to obtain super smooth surface based on hydrodynamic lubrication effect, but at present, this method has encountered a bottleneck in further improving roughness. In order to break through this problem, this paper systematically studies the dual rotation elastic emission processing technology. The main research contents are as follows: (1) according to the required performance of the device, the double rotation elastic emission processing device is designed. The design process of polishing device is introduced from the aspects of design index, performance parameters, selection and statics analysis of key components, and experimental verification of device stability. (2) the relationship between polishing gap and fluid shear force is illustrated by Fluent simulation; the influence of polishing wheel turning knife grain and radial runout on clearance is established; the influence of rotation speed on material removal efficiency and elastic domain removal is illustrated by force analysis of polishing particles. The flow field characteristics under rotation and the influence of rotation speed on fluid shear force are illustrated by simulation. The correctness of the theory and simulation is verified by the removal function experiment. (3) taking the surface roughness value of optical elements as the index, according to a certain optimization strategy, the polishing parameters are optimized through the process experiments, including polishing gap experiment, rotation speed experiment and rotating speed experiment, and finally a set of optimal parameters are obtained, and the minimum roughness value is obtained under this group of parameters. (4) according to the optimized parameters, The effect of double rotation elastic emission machining on super smooth surface is verified on different materials. The research of the subject will help to promote the development of super-smooth surface machining technology, and it is of great significance in both theoretical guidance and practical application.
【學(xué)位授予單位】：國(guó)防科學(xué)技術(shù)大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：TB306

【引證文獻(xiàn)】

相關(guān)碩士學(xué)位論文 前1條

1 羅杰維;NiP超光滑表面CMP理論模型建立與工藝實(shí)驗(yàn)研究[D];哈爾濱工業(yè)大學(xué);2018年

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本文編號(hào)：2501939