【摘要】：超導材料和納米材料因其特性和其潛在應用前景引起人們的廣泛關注,成為了世界性的研究熱點,因此超導材料的粉碎至關重要。振動磨是由電機通過撓性聯(lián)軸器,帶動主軸回轉,軸帶動軸上偏心塊回轉,從而產生激振力,利用彈簧使筒體產生振動,從而使筒內物料和磨介相互沖擊、碰撞、擊碎和粉磨物料。振動磨工作筒高頻振動造成工作介質對物料的沖擊速度快、且工作介質多而使得沖擊頻率高,可實現(xiàn)物料的微米納米級粉碎;由于其可通過調節(jié)控制振動的頻率、振幅、介質尺寸等參數(shù)來控制工藝工程,從而可實現(xiàn)對物料粉碎粒度的調節(jié)與控制;其結構相對簡單,便于實現(xiàn)微小型化。本論文首先利用粉碎理論計算出鉍系銅氧化物高溫超導材料粉碎到微米級粒度所需的振動強度,振幅和所需電機轉速,并對振動磨進行振動分析,得出所需的偏心距,以及隔振設計計算出彈簧的具體參數(shù),從而完成振動磨的整體設計。其次利用Solidworks軟件對振動磨零件進行三維實體建模,生成參數(shù)化的零部件并進行裝配;對振動磨進行運動仿真,得出振動磨的振幅、研磨球運動軌跡等性能參數(shù),初步檢驗設計的合理性;同時對關鍵零件軸的強度進行有限元分析,得到應力分布和危險部位,并確認設計的安全性。最后完成設計、繪制CAD圖紙、加工制造實體振動磨各零件,并進行組裝調試。經檢驗合格后,對鉍系銅氧化物高溫超導材料進行振動粉碎實驗,經過粉碎、干燥、篩分后在hirox RH-7700的浩視顯微鏡中觀察粉碎后的物料粒度并與預想值對比分析,并不斷地調試振動磨參數(shù)重復實驗,最終得到比較理想的實驗效果滿足微米級粒度要求。
[Abstract]:Superconducting materials and nanomaterials have attracted wide attention due to their properties and potential applications, and have become a worldwide research hotspot. Therefore, the comminution of superconducting materials is very important. The vibration mill is driven by the motor through the flexible coupling to drive the spindle to rotate, the shaft to drive the eccentric block on the shaft to rotate, so as to produce the exciting force, and the spring is used to make the cylinder body vibrate, thus making the material in the cylinder and the grinding medium colliding with each other. Crushing and grinding materials. The high frequency vibration of the working cylinder of the vibration mill results in the high impact speed of the working medium on the material and the high impact frequency of the working medium, which can realize the crushing of the material at the micron and nanometer level. Because it can control the process engineering by adjusting the frequency, amplitude and medium size of the vibration control, it can adjust and control the particle size of the material comminuted, and its structure is relatively simple, and it is easy to realize micro-miniaturization. In this paper, the vibration intensity, amplitude and motor speed needed to comminute to micron particle size of bismuth system copper oxide high temperature superconducting material are calculated by using comminution theory, and vibration analysis of vibration mill is carried out, and the required eccentricity is obtained. And the vibration isolation design calculated the specific parameters of the spring, so as to complete the overall design of the vibration mill. Secondly, Solidworks software is used to build 3D solid model of vibration grinding parts, to generate parameterized parts and assemble them. The motion simulation of the vibration mill is carried out, the amplitude of the vibration mill and the motion track of the ball are obtained, and the rationality of the design is preliminarily verified. At the same time, the strength of the key parts shaft is analyzed by finite element method, the stress distribution and dangerous position are obtained, and the safety of the design is confirmed. The final design, drawing CAD drawings, machining and manufacturing entities vibration grinding parts, and assembly debugging. After passing the test, the vibration comminution experiment of bismuth based copper oxide high temperature superconducting material was carried out. After grinding, drying and screening, the particle size of the comminuted material was observed and compared with the expected value in the hirox RH-7700 microscope. Repeated experiments of vibration mill parameters were carried out and the satisfactory experimental results were obtained to meet the requirement of micron particle size.
【學位授予單位】：遼寧科技大學
【學位級別】：碩士
【學位授予年份】：2015
【分類號】：TB383.1;TM26

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本文編號：2340248