本文選題：金剛石框架鋸條 + 花崗石��； 參考：《山東大學(xué)》2015年碩士論文

【摘要】：金剛石框架鋸條是最主要的石板材鋸解加工工具之一,具有加工效率高、加工質(zhì)量好、環(huán)境污染小的優(yōu)點。目前金剛石框架鋸條鋸解技術(shù)有了很大進(jìn)步,但其鋸解花崗石板材時存在磨損較快、使用壽命低等問題。同時隨著鋸解加工板材材料性質(zhì)的多樣化,對金剛石框架鋸條也提出了更多的要求。因此研究金剛石框架鋸條鋸解花崗石板材特性以及金剛石框架鋸條的疲勞壽命,對花崗石板材的高效鋸解加工和新型金剛石框架鋸條的開發(fā)具有重要指導(dǎo)意義。本文以金剛石框架鋸條為研究對象,系統(tǒng)分析當(dāng)前金剛石框架鋸條和花崗石板材鋸解技術(shù)的研究現(xiàn)狀及存在的問題；結(jié)合金剛石框架鋸條的結(jié)構(gòu)與技術(shù)特點,運(yùn)用ADAMS仿真分析其鋸解加工運(yùn)動規(guī)律,對金剛石框架鋸條的材料特性,鋸解加工前的安裝張緊以及其鋸解加工過程中的受力特性進(jìn)行分析,得到金剛石框架鋸條的鋸解加工特征。對金剛石框架鋸條鋸解花崗石進(jìn)行了實驗研究,探索了其鋸解加工花崗石板材過程中的鋸解力特性,并通過Mat lab進(jìn)行回歸分析建立了各個鋸解力的數(shù)學(xué)模型,為金剛石框架鋸條的疲勞壽命分析提供載荷譜；根據(jù)鋸解力實驗結(jié)果,以疲勞累積損傷理論為基礎(chǔ),通過名義應(yīng)力計算方法完成金剛石框架鋸條的疲勞壽命預(yù)測,并借助Workbench有限元分析和n-Code designlife疲勞分析軟件,仿真分析計算金剛石框架鋸條在近似加工狀態(tài)下的疲勞壽命,與理論預(yù)測結(jié)果相符合,并得出在金剛石框架鋸條中間位置的上端部分以及鋸條基體與鋸齒焊接的位置疲勞壽命最小而最易發(fā)生疲勞；同時,分析了金剛石框架鋸條疲勞壽命對載荷變化的靈敏性,發(fā)現(xiàn)金剛石框架鋸條壽命對張緊力載荷最敏感,豎直鋸解力載荷次之,水平鋸解力載荷的影響最小。通過本課題的研究,不僅可以提升金剛石框架鋸條鋸解花崗石板材時的安全可靠性,而且在實際生產(chǎn)中可以指導(dǎo)設(shè)計合理的花崗石大板加工工藝和花崗石板材鋸解用金剛石框架鋸條。
[Abstract]:Diamond frame saw blade is one of the most important tools for cutting stone plate. It has the advantages of high processing efficiency, good processing quality and low environmental pollution. At present, great progress has been made in sawing technology of diamond frame saw blade, but there are some problems in sawing granite plate such as fast wear and low service life. At the same time, with the diversification of material properties of saw plate, more requirements for diamond frame saw blade are put forward. Therefore, it is of great significance to study the characteristics of diamond frame saw blade sawing granite plate and the fatigue life of diamond frame saw blade for high efficiency sawing of granite plate and development of new diamond frame saw blade. This paper takes diamond frame saw blade as the research object, systematically analyzes the present research status and existing problems of diamond frame saw blade and granite plate sawing technology, and combines the structure and technical characteristics of diamond frame saw blade. By using Adams simulation, the characteristics of diamond frame saw blade's material, the installation tensioning before sawing and the mechanical characteristics in the process of sawing are analyzed. The cutting characteristics of diamond frame saw blade are obtained. The experimental study on sawing granite with diamond frame saw blade was carried out, and the characteristics of sawing force in the process of sawing and processing granite plate were explored, and the mathematical models of sawing force were established by regression analysis with Mat lab. The load spectrum is provided for the fatigue life analysis of diamond frame saw blades, and the fatigue life prediction of diamond frame saw blades is accomplished by means of nominal stress calculation based on the fatigue cumulative damage theory based on the experimental results of sawing force. With the help of Workbench finite element analysis and n-Code designlife fatigue analysis software, the fatigue life of diamond frame saw blade under approximate working condition is simulated and calculated, which is in accordance with the theoretical prediction results. The fatigue life of the upper part of diamond frame saw blade and the welding position between saw blade base and saw teeth are the least and the fatigue life is the most easy to occur, meanwhile, the sensitivity of fatigue life of diamond frame saw blade to load variation is analyzed. It is found that the life of diamond frame saw blade is the most sensitive to the tension load, the vertical saw load is the second, and the horizontal saw load is the least. Through the research of this subject, not only can the safety and reliability of the diamond frame saw blade sawing granite plate be improved, Moreover, it can be used to design reasonable processing technology of granite plate and diamond frame saw blade for sawing granite plate in actual production.
【學(xué)位授予單位】：山東大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：TG717

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本文編號：2009785