本文選題：LED分選機　切入點：轉動慣量　出處：《湖南大學》2015年碩士論文

【摘要】：由于LED芯片是數(shù)以億計的生產(chǎn),因此對LED測試分選機分料機構進行優(yōu)化設計以提升其工作效率的研究顯得尤為關鍵,提高分選的工作效率是企業(yè)如何提高效益、創(chuàng)造價值、提高競爭力不可回避的重要課題。本文以廣東某半導體檢測封裝公司的一種LED分選機分料機構為研究對象,摒棄對單一零部件進行輕量化的設計思路,將分選機電機輸出扭矩、轉動系統(tǒng)的轉動慣量、接料孔的布置作為一個整體進行優(yōu)化設計,達到提升分選效率的目的。主要內(nèi)容如下：(1)虛擬樣機建模及有限元分析。在三維軟件中建立分選機的虛擬樣機模型,并在有限元分析軟件中對關鍵零部件進行結構靜力分析、模態(tài)分析,考察其強度和剛度以及固有頻率,以確定原機構的優(yōu)化空間。(2)動力學仿真分析。通過動力學仿真分析,研究了分選機在不同運動狀態(tài)下,分選機轉動系統(tǒng)的轉動慣量值及其變化規(guī)律,通過轉動慣量變化規(guī)律函數(shù),求出角加速度,即可計算出任意一次分選過程的時間,從而求出分選機效率的理論值。(3)對分選機分料機構進行優(yōu)化設計。利用APDL語言在ANSYS中建立關鍵零件擺臂的參數(shù)化模型,提取幾何尺寸作為設計變量,以擺臂重量為目標函數(shù),對擺臂進行輕量化設計。同時優(yōu)化接料孔的布置方式,提高整機的分選效率。本文將有限元知識與動力學仿真分析運用于解決實際工程問題,為提高分選機分選效率提供了一種比較合理可行的解決思路。對降低企業(yè)生產(chǎn)成本,縮短研發(fā)周期,提高生產(chǎn)效益具有重要意義。
[Abstract]:Because the LED chip is the production of hundreds of millions of millions, it is very important to optimize the design of the separation mechanism of the LED test separator in order to improve its working efficiency. How to improve the efficiency of the separation is how to improve the efficiency and create the value.Raise the important subject that competitive ability cannot avoid.In this paper, a kind of separation mechanism of LED separator of a semiconductor testing and packaging company in Guangdong province is taken as the research object. The design idea of lightening single parts is abandoned, and the torque of the motor of the separator and the moment of inertia of the rotary system are outputted.The layout of the connection hole is optimized as a whole to improve the separation efficiency.The main contents are as follows: 1) Virtual prototype modeling and finite element analysis.The virtual prototype model of the separator is established in 3D software. The structural static analysis, modal analysis, strength, stiffness and natural frequency of the key parts are carried out in the finite element analysis software.In order to determine the optimization space of the original mechanism.Through dynamic simulation analysis, the moment of inertia and its variation law of the sorting machine's rotational system in different motion states are studied. The angular acceleration is obtained by the function of the changing law of the moment of inertia.The time of any sorting process can be calculated, and the theoretical value of the efficiency of the separator can be calculated. 3) the optimum design of the separation mechanism of the separator can be carried out.The parameterized model of swing arm of key parts is established in ANSYS by APDL language. The geometric dimension is extracted as design variable and the weight of pendulum arm is taken as objective function to carry out lightweight design of pendulum arm.At the same time, the layout of the connection hole is optimized to improve the sorting efficiency of the whole machine.In this paper, finite element knowledge and dynamic simulation analysis are applied to solve practical engineering problems, which provides a more reasonable and feasible solution for improving the sorting efficiency of separator.It is of great significance to reduce production cost, shorten R & D cycle and improve production efficiency.
【學位授予單位】：湖南大學
【學位級別】：碩士
【學位授予年份】：2015
【分類號】：TN312.8

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本文編號：1716418