本文關(guān)鍵詞：濕性機(jī)械鏡面拋光機(jī)理及其應(yīng)用技術(shù)的研究　出處：《江蘇大學(xué)》2017年碩士論文　論文類型：學(xué)位論文

  更多相關(guān)文章： 濕性機(jī)械拋光 材料去除率 正交實(shí)驗(yàn) 生產(chǎn)效率

【摘要】：高、精、尖產(chǎn)品往往都裝配一些具有鏡面光潔度的零件,這些零件都需要采用各種拋光技術(shù)進(jìn)行加工。拋光技術(shù)被越來(lái)越廣泛應(yīng)用于各個(gè)行業(yè)中。工業(yè)中成熟的拋光技術(shù)普遍存在加工形式粗放、尺寸精度穩(wěn)定性不高、加工效率低、污染環(huán)境等不足,制約著工廠對(duì)拋光產(chǎn)品的大批量生產(chǎn)。開(kāi)展高效、優(yōu)質(zhì)、環(huán)保的拋光技術(shù)具有重要的實(shí)用價(jià)值。本文通過(guò)理論分析與實(shí)驗(yàn)論證方法對(duì)濕性機(jī)械拋光機(jī)理、拋光效率、拋光工藝參數(shù)優(yōu)化及其應(yīng)用技術(shù)等關(guān)鍵問(wèn)題進(jìn)行了系統(tǒng)的研究。本研究的主要工作和成果為:(1)開(kāi)展了濕性機(jī)械拋光機(jī)理的研究,結(jié)合經(jīng)典Preston方程,建立了拋光材料去除率理論模型。利用該理論模型針對(duì)拋光輪的幾何物理屬性(彈性模量、泊松比)、拋光工藝參數(shù)(拋光輪轉(zhuǎn)速、工件轉(zhuǎn)速與拋光法向壓力)與材料去除率進(jìn)行了定量分析研究。研究工作為揭示拋光工藝參數(shù)對(duì)拋光效率的影響規(guī)律提供了理論依據(jù)。(2)針對(duì)拋光工藝參數(shù)(拋光輪轉(zhuǎn)速、工件轉(zhuǎn)速與拋光法向壓力)進(jìn)行單因素試驗(yàn),對(duì)比分析了試驗(yàn)結(jié)果與數(shù)值仿真,驗(yàn)證了材料去除率理論模型的合理性,為優(yōu)化拋光工藝參數(shù)提供了理論依據(jù)。(3)針對(duì)粗拋光工藝與精拋光工藝分別進(jìn)行正交實(shí)驗(yàn),選取材料去除深度H和表面粗糙度Ra作為實(shí)驗(yàn)評(píng)價(jià)標(biāo)準(zhǔn),拋光輪轉(zhuǎn)速、工件轉(zhuǎn)速、工件偏移速度、拋光法向壓力和拋光滴液間隔作為實(shí)驗(yàn)主要影響因素。根據(jù)實(shí)驗(yàn)結(jié)果得出影響程度排列和較優(yōu)工藝參數(shù)組合,為后續(xù)拋光生產(chǎn)加工提供實(shí)驗(yàn)基礎(chǔ)。(4)根據(jù)拋光生產(chǎn)存在的產(chǎn)品質(zhì)量問(wèn)題和生產(chǎn)效率低等問(wèn)題進(jìn)行了工藝優(yōu)化,提高了生產(chǎn)效率,保證了加工質(zhì)量。研究工作豐富了機(jī)械拋光理論,降低了制造企業(yè)的生產(chǎn)成本,提升市場(chǎng)競(jìng)爭(zhēng)力。
[Abstract]:High, fine and sharp products are often equipped with parts with mirror finish. These parts need to be processed by various polishing techniques. Polishing technology is more and more widely used in various industries. The mature polishing technology in industry generally exists extensive processing form and the dimensional accuracy stability is not high. Low processing efficiency, environmental pollution and other deficiencies restrict the factory to produce polishing products in large quantities, and carry out high efficiency and high quality. Environmental protection polishing technology has important practical value. In this paper, the polishing mechanism and polishing efficiency of wettable machinery are studied by theoretical analysis and experimental demonstration. The key problems such as the optimization of polishing process parameters and their application techniques are systematically studied. The main work and results of this study are as follows: 1) the research on the polishing mechanism of wettable machinery has been carried out. Based on the classical Preston equation, a theoretical model of material removal rate is established, which is used to analyze the geometric and physical properties (elastic modulus, Poisson's ratio) of the polishing wheel. Polishing process parameters (rotation speed of polishing wheel). The quantitative analysis of workpiece rotation speed and polishing normal pressure) and material removal rate were carried out. The research provides a theoretical basis for revealing the influence of polishing process parameters on polishing efficiency. For polishing process parameters (polishing wheel speed). Single factor experiment was carried out on the rotating speed of workpiece and the normal pressure of polishing. The results of test and numerical simulation were compared to verify the rationality of the theoretical model of material removal rate. In order to optimize the polishing process parameters, a theoretical basis is provided. (3) orthogonal experiments are carried out for coarse polishing process and finishing polishing process, and the material removal depth H and surface roughness Ra are selected as the experimental evaluation criteria. Polishing wheel speed, workpiece speed, workpiece offset speed, polishing normal pressure and polishing droplet interval are the main factors affecting the experiment. According to the experimental results, the influence degree of the arrangement and the optimal combination of process parameters are obtained. To provide experimental basis for subsequent polishing production and processing. (4) according to the problems of product quality and low production efficiency in polishing production, the process optimization is carried out, and the production efficiency is improved. The research enriches the theory of mechanical polishing, reduces the production cost of manufacturing enterprises and promotes the market competitiveness.
【學(xué)位授予單位】：江蘇大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2017
【分類號(hào)】：TG580.692

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