本文選題：金剛石圓鋸片 + 仿真分析��； 參考：《濟(jì)南大學(xué)》2017年碩士論文

【摘要】：金剛石圓鋸片作為一種切割工具,廣泛應(yīng)用于混凝土、耐火材料、石材,陶瓷等硬脆材料的加工。但由于其超薄的結(jié)構(gòu),工作時在外力的作用下極易發(fā)生軸向變形,甚至斷裂;另外圓鋸片在工作時所產(chǎn)生的噪聲也會對環(huán)境造成極大的危害。本文主要對圓鋸片的平面應(yīng)力、動態(tài)特性以及加工工藝進(jìn)行研究,主要內(nèi)容包含以下方面:對金剛石圓鋸片的幾種平面應(yīng)力進(jìn)行了理論研究,主要分為五部分:離心力的理論研究、鋸切力的理論研究、熱應(yīng)力的理論研究、適張應(yīng)力的理論研究和回火應(yīng)力的理論研究。分析了它們對圓鋸片穩(wěn)定性的影響,從而為第三章的有限元仿真分析和圓鋸片的結(jié)構(gòu)優(yōu)化提供理論支持。利用有限元軟件ANSYS Workbench對圓鋸片進(jìn)行靜力學(xué)與熱力學(xué)仿真,得到圓鋸片在僅受離心力、鋸切力、熱載荷和三種載荷共同作用下的變形和應(yīng)力分布的規(guī)律,并以此為依據(jù),對圓鋸片的徑向槽進(jìn)行結(jié)構(gòu)優(yōu)化,把槽的底孔半徑、槽深、槽寬和槽的傾斜角作為變量,對圓鋸片進(jìn)行熱力耦合分析,得到徑向槽最優(yōu)的結(jié)構(gòu)參數(shù),從而提高圓鋸片的力學(xué)性能。對金剛石圓鋸片進(jìn)行動態(tài)特性分析,確定其固有頻率和各階陣型,并分析了影響鋸片動態(tài)特性的主要因素(如預(yù)應(yīng)力、法蘭盤直徑、基體厚度);并對開圓形降噪孔鋸片、復(fù)合型鋸片的振動特性進(jìn)行了研究,以此對開圓形降噪孔鋸片的孔徑大小、分布位置及圓孔數(shù)量進(jìn)行了優(yōu)化,確定了復(fù)合型圓鋸片的夾層阻尼材料類型與最佳夾層厚度,并將優(yōu)化后的復(fù)合型圓鋸片與普通圓鋸片進(jìn)行振動衰減實驗對比,結(jié)果表明:復(fù)合片的振動強度與衰減時間與常規(guī)鋸片相比有大幅度減小,從而為圓鋸片的減振降噪設(shè)計提供技術(shù)支撐�；谀壳皩�(fù)合型圓鋸片制造工藝的分析,結(jié)合優(yōu)化后的復(fù)合型圓鋸片的結(jié)構(gòu)特點,對其中的關(guān)鍵工序(如點焊、熱處理、磨削等)的工藝參數(shù)及加工方式進(jìn)行優(yōu)化,并探討了上述關(guān)鍵工序的加工控制要求。
[Abstract]:As a cutting tool, diamond circular saw blade is widely used in the processing of hard and brittle materials such as concrete, refractory, stone and ceramics. However, due to its ultra-thin structure, axial deformation and even fracture occur easily under the action of external force, and the noise produced by circular saw blade will also cause great harm to the environment. In this paper, the plane stress, dynamic characteristics and processing technology of circular saw blade are studied. The main contents are as follows: the theoretical study of several kinds of plane stress of diamond saw blade is carried out. It is mainly divided into five parts: the theoretical study of centrifugal force, the theoretical study of sawing force, the theoretical study of thermal stress, the theoretical study of tensile stress and the theoretical study of tempering stress. The influence of them on the stability of circular saw blade is analyzed, which provides theoretical support for the finite element simulation analysis and structural optimization of circular saw blade in chapter 3. The static and thermodynamic simulation of circular saw blade is carried out by using finite element software ANSYS Workbench, and the law of deformation and stress distribution of circular saw blade under the action of centrifugal force, sawing force, thermal load and three kinds of load is obtained. The structure of radial slot of circular saw blade is optimized. The radius of bottom hole, depth of slot, width of slot and inclined angle of slot are taken as variables. The thermodynamic coupling analysis of circular saw blade is carried out, and the optimum structural parameters of radial slot are obtained. Thus, the mechanical properties of circular saw blade are improved. The dynamic characteristics of diamond circular saw blade are analyzed, and the natural frequency and each order formation are determined. The main factors influencing the dynamic characteristics of the saw blade (such as prestress, flange diameter, matrix thickness) are analyzed, and the circular noise-reducing hole saw blade is also analyzed. The vibration characteristics of the composite saw blade are studied in order to optimize the aperture size, distribution position and the number of circular holes of the circular saw blade, and to determine the type of sandwich damping material and the optimum thickness of the sandwich for the composite circular saw blade. The results show that the vibration intensity and attenuation time of the composite saw blade are much smaller than that of the conventional saw blade, and compared with the conventional saw blade, the vibration attenuation of the composite saw blade is compared with that of the conventional saw blade, and the results show that the vibration intensity and attenuation time of the composite saw blade are greatly reduced. Thus provides the technical support for the circular saw blade vibration and noise reduction design. Based on the analysis of the manufacturing process of the composite circular saw blade and the structural characteristics of the optimized composite saw blade, the process parameters and processing methods of the key processes (such as spot welding, heat treatment, grinding, etc.) are optimized. The process control requirements of the key processes mentioned above are also discussed.
【學(xué)位授予單位】：濟(jì)南大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2017
【分類號】：TG717

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本文編號：1973014