本文選題：ADAMS　切入點(diǎn)：機(jī)械壓力機(jī)　出處：《延邊大學(xué)》2017年碩士論文　論文類型：學(xué)位論文

【摘要】：機(jī)械壓力機(jī)被廣泛應(yīng)用于汽車、電子、軍工、航空航天等重要的工業(yè)領(lǐng)域,尤其是近年來隨著汽車行業(yè)的飛速發(fā)展及生產(chǎn)規(guī)�；�,壓力機(jī)更是成為汽車生產(chǎn)過程中應(yīng)用于沖壓、拉深、落料等工藝不可缺少的鍛壓裝備。而隨著科學(xué)技術(shù)的發(fā)展以及工業(yè)技術(shù)水平的不斷提高,傳統(tǒng)的曲柄連桿式壓力機(jī)由于其較低的沖壓精度及加工效率,已經(jīng)不能很好地滿足沖壓市場越來越高的生產(chǎn)需求。因此肘桿式機(jī)械壓力機(jī)由于其急回特性好、增力效果明顯等特點(diǎn),已經(jīng)越來越多的被應(yīng)用到鍛壓領(lǐng)域中。所以提高被廣泛應(yīng)用到工業(yè)生產(chǎn)鍛壓領(lǐng)域中的機(jī)械壓力機(jī)的工作性能已經(jīng)顯得至關(guān)重要。機(jī)械壓力機(jī)內(nèi)部的傳動機(jī)構(gòu)是壓力機(jī)的核心部分,機(jī)構(gòu)參數(shù)設(shè)計(jì)不合理等因素都會影響壓力機(jī)的各項(xiàng)工作性能,進(jìn)而影響到產(chǎn)品的質(zhì)量。針對上述問題,本文提出了利用ADAMS軟件對肘桿式機(jī)械壓力機(jī)的虛擬樣機(jī)模型進(jìn)行運(yùn)動學(xué)參數(shù)化仿真分析,并對機(jī)構(gòu)模型進(jìn)行了多目標(biāo)的優(yōu)化設(shè)計(jì),最終提升了肘桿式機(jī)械壓力機(jī)傳動機(jī)構(gòu)的綜合工作性能,從而提高被沖壓工件的質(zhì)量。目前國內(nèi)外學(xué)者大多利用Matlab或ADAMS軟件對肘桿式機(jī)械壓力機(jī)進(jìn)行仿真和優(yōu)化分析,研究證明了肘桿式壓力機(jī)的傳動機(jī)構(gòu)具有很好的急回特性,且增力效果明顯。本文是在國內(nèi)外學(xué)者的研究基礎(chǔ)上,首先闡述了機(jī)械壓力機(jī)的分類及運(yùn)動特性,介紹了目前國內(nèi)外學(xué)者對于相關(guān)領(lǐng)域的研究現(xiàn)狀,并以肘桿式機(jī)械壓力機(jī)為研究對象,對壓力機(jī)的傳動機(jī)構(gòu)進(jìn)行了運(yùn)動學(xué)分析及機(jī)構(gòu)基礎(chǔ)尺寸的求解分析;然后利用ADAMS軟件對機(jī)構(gòu)進(jìn)行了參數(shù)化虛擬樣機(jī)建模,驗(yàn)證了機(jī)構(gòu)模型參數(shù)化坐標(biāo)的正確性并成功地進(jìn)行了模型自檢,之后通過運(yùn)動學(xué)仿真分析研究了滑塊的各項(xiàng)特性曲線對機(jī)構(gòu)性能的影響;為了提高機(jī)構(gòu)運(yùn)動的平穩(wěn)性,提升沖壓質(zhì)量及延長模具的使用壽命,通過創(chuàng)建設(shè)計(jì)變量,建立約束函數(shù)和目標(biāo)函數(shù),提出了以減小機(jī)構(gòu)工作過程中滑塊的速度波動量、降低工作過程中的最大壓力角和減小滑塊的加速度峰值為目標(biāo)的多目標(biāo)優(yōu)化設(shè)計(jì),并利用ADAMS/Insight試驗(yàn)優(yōu)化模塊對機(jī)構(gòu)模型進(jìn)行了優(yōu)化計(jì)算分析,得到了綜合工作性能更好的傳動機(jī)構(gòu)設(shè)計(jì)參數(shù)。通過對優(yōu)化前后的機(jī)構(gòu)模型進(jìn)行最終仿真分析,對比優(yōu)化前后滑塊的各項(xiàng)特性曲線,仿真結(jié)果表明機(jī)構(gòu)的綜合工作性能明顯提升。本文為肘桿式機(jī)械壓力機(jī)傳動機(jī)構(gòu)的運(yùn)動仿真及優(yōu)化分析提供了一定的理論依據(jù)。
[Abstract]:Mechanical presses are widely used in automotive, electronic, military, aerospace and other important industrial fields, especially in recent years, with the rapid development of automobile industry and production scale, press is used in the process of automobile production. Drawing, blanking and other indispensable forging equipment. With the development of science and technology and the continuous improvement of industrial technology, the traditional crank and connecting rod press is due to its low stamping accuracy and processing efficiency. It has not been able to meet the higher and higher production demand of the stamping market. Therefore, the elbow bar mechanical press has the characteristics of good quick return characteristic and obvious force increasing effect, etc. It is very important to improve the working performance of mechanical press which is widely used in the field of industrial production and forging. The internal transmission mechanism of mechanical press is press. The core of the machine, The unreasonable design of the mechanical parameters will affect the performance of the press and then affect the quality of the product. In this paper, the kinematics parameterized simulation analysis of the virtual prototype model of the elbow bar mechanical press is presented by using ADAMS software, and the multi-objective optimization design of the mechanism model is carried out. Finally, the comprehensive working performance of the transmission mechanism of the elbow bar mechanical press is improved, thus improving the quality of the punched workpiece. At present, most scholars at home and abroad use Matlab or ADAMS software to simulate and optimize the elbow bar mechanical press. The research has proved that the transmission mechanism of the elbow press has good quick return characteristic, and the effect of increasing force is obvious. Based on the research of domestic and foreign scholars, the classification and motion characteristics of mechanical press are first expounded in this paper. This paper introduces the current research situation of domestic and foreign scholars on the related fields, and takes the elbow bar mechanical press as the research object, carries on the kinematics analysis and the mechanism basic size solution analysis to the press transmission mechanism; Then the parameterized virtual prototype model of the mechanism is built by using ADAMS software, which verifies the correctness of the parameterized coordinate of the mechanism model and successfully carries out the self-checking of the model. In order to improve the stability of the mechanism, improve the stamping quality and prolong the service life of the die, the design variables are created, and the influence of the characteristic curve of the slider on the performance of the mechanism is studied by kinematics simulation. The constraint function and the objective function are established, and a multi-objective optimization design is proposed, which aims at reducing the velocity fluctuation of the slider, reducing the maximum pressure angle and reducing the peak acceleration of the slider. The optimal calculation and analysis of the mechanism model are carried out by using the ADAMS/Insight test optimization module, and the design parameters of the transmission mechanism with better comprehensive working performance are obtained. Finally, the simulation analysis of the mechanism model before and after the optimization is carried out. Compared with the characteristic curves of the slider before and after optimization, the simulation results show that the comprehensive working performance of the mechanism is obviously improved. This paper provides a certain theoretical basis for the motion simulation and optimization analysis of the transmission mechanism of the mechanical press with elbow bar.
【學(xué)位授予單位】：延邊大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2017
【分類號】：TG315

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