本文選題：LED分選機(jī)　切入點(diǎn)：轉(zhuǎn)動(dòng)慣量　出處：《湖南大學(xué)》2015年碩士論文

【摘要】：由于LED芯片是數(shù)以億計(jì)的生產(chǎn),因此對(duì)LED測(cè)試分選機(jī)分料機(jī)構(gòu)進(jìn)行優(yōu)化設(shè)計(jì)以提升其工作效率的研究顯得尤為關(guān)鍵,提高分選的工作效率是企業(yè)如何提高效益、創(chuàng)造價(jià)值、提高競(jìng)爭(zhēng)力不可回避的重要課題。本文以廣東某半導(dǎo)體檢測(cè)封裝公司的一種LED分選機(jī)分料機(jī)構(gòu)為研究對(duì)象,摒棄對(duì)單一零部件進(jìn)行輕量化的設(shè)計(jì)思路,將分選機(jī)電機(jī)輸出扭矩、轉(zhuǎn)動(dòng)系統(tǒng)的轉(zhuǎn)動(dòng)慣量、接料孔的布置作為一個(gè)整體進(jìn)行優(yōu)化設(shè)計(jì),達(dá)到提升分選效率的目的。主要內(nèi)容如下：(1)虛擬樣機(jī)建模及有限元分析。在三維軟件中建立分選機(jī)的虛擬樣機(jī)模型,并在有限元分析軟件中對(duì)關(guān)鍵零部件進(jìn)行結(jié)構(gòu)靜力分析、模態(tài)分析,考察其強(qiáng)度和剛度以及固有頻率,以確定原機(jī)構(gòu)的優(yōu)化空間。(2)動(dòng)力學(xué)仿真分析。通過動(dòng)力學(xué)仿真分析,研究了分選機(jī)在不同運(yùn)動(dòng)狀態(tài)下,分選機(jī)轉(zhuǎn)動(dòng)系統(tǒng)的轉(zhuǎn)動(dòng)慣量值及其變化規(guī)律,通過轉(zhuǎn)動(dòng)慣量變化規(guī)律函數(shù),求出角加速度,即可計(jì)算出任意一次分選過程的時(shí)間,從而求出分選機(jī)效率的理論值。(3)對(duì)分選機(jī)分料機(jī)構(gòu)進(jìn)行優(yōu)化設(shè)計(jì)。利用APDL語(yǔ)言在ANSYS中建立關(guān)鍵零件擺臂的參數(shù)化模型,提取幾何尺寸作為設(shè)計(jì)變量,以擺臂重量為目標(biāo)函數(shù),對(duì)擺臂進(jìn)行輕量化設(shè)計(jì)。同時(shí)優(yōu)化接料孔的布置方式,提高整機(jī)的分選效率。本文將有限元知識(shí)與動(dòng)力學(xué)仿真分析運(yùn)用于解決實(shí)際工程問題,為提高分選機(jī)分選效率提供了一種比較合理可行的解決思路。對(duì)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(xué)位授予單位】：湖南大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：TN312.8

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