本文選題：電磁振動(dòng)料斗 + 動(dòng)力學(xué)模型��； 參考：《燕山大學(xué)》2011年碩士論文

【摘要】：電磁振動(dòng)料斗廣泛用于食品、機(jī)械、電子和醫(yī)藥等產(chǎn)品的自動(dòng)化生產(chǎn)中。針對(duì)不同物料的材質(zhì)、形狀、表面特征和給料要求,其最佳振動(dòng)料斗的各種結(jié)構(gòu)性參數(shù)、定向機(jī)構(gòu)和驅(qū)動(dòng)力大小也不同,這種多性能指標(biāo)和多影響參數(shù)的匹配問(wèn)題一直是電磁振動(dòng)料斗的研究難點(diǎn)與重點(diǎn)問(wèn)題。因此,有必要使用理論計(jì)算的方法建立其動(dòng)力學(xué)、運(yùn)動(dòng)學(xué)模型,并對(duì)振動(dòng)料斗的結(jié)構(gòu)進(jìn)行優(yōu)化設(shè)計(jì)和動(dòng)態(tài)特性進(jìn)一步研究。 本文是在詳細(xì)分析國(guó)內(nèi)外電磁振動(dòng)料斗發(fā)展現(xiàn)狀的基礎(chǔ)上,針對(duì)當(dāng)前電磁振動(dòng)料斗在結(jié)構(gòu)優(yōu)化上存在的主要問(wèn)題,通過(guò)理論計(jì)算和有限元仿真模擬的方法,對(duì)偏置型振動(dòng)料斗板彈簧的變形和符合運(yùn)送物料的振型進(jìn)行了比較系統(tǒng)的研究。 對(duì)電磁振動(dòng)料斗的工作原理進(jìn)行系統(tǒng)地分析之后,建立圓盤(pán)式電磁振動(dòng)料斗的動(dòng)力學(xué)和運(yùn)動(dòng)學(xué)模型。通過(guò)對(duì)理論動(dòng)力學(xué)模型的研究,計(jì)算了上下質(zhì)體與其相對(duì)振幅的關(guān)系;根據(jù)幅頻特性曲線分析了固有頻率和激振力頻率的關(guān)系,確定了振動(dòng)料斗的工作狀態(tài)。通過(guò)對(duì)振動(dòng)料斗的理論運(yùn)動(dòng)學(xué)模型的研究,分析了偏置系數(shù)和不同軌道半徑對(duì)振動(dòng)角和板彈簧傾角之間關(guān)系的影響,以及分析了物料的滑行指數(shù)和拋擲指數(shù),最后得到了振動(dòng)角與其正(反)向滑行指數(shù)的關(guān)系和零件滑行運(yùn)動(dòng)狀態(tài)與運(yùn)動(dòng)學(xué)參數(shù)的關(guān)系。 本論文重點(diǎn)是用能量法計(jì)算板彈簧理論等效剛度,運(yùn)用有限元方法對(duì)板彈簧理論垂直剛度進(jìn)行模擬修正,從而得到修正后的板彈簧剛度公式;對(duì)板彈簧上具有惰性點(diǎn)的電磁振動(dòng)料斗的理論固有頻率進(jìn)行了計(jì)算,并運(yùn)用有限元方法對(duì)其結(jié)構(gòu)的固有頻率進(jìn)行模態(tài)分析,通過(guò)對(duì)比修正得到修正后的固有頻率公式。因此,為設(shè)計(jì)人員在設(shè)計(jì)階段能計(jì)算出相對(duì)正確的固有頻率奠定了基礎(chǔ)。
[Abstract]:Electromagnetic vibration hoppers are widely used in the automatic production of products such as food , machinery , electronics and medicine . For the materials , shapes , surface characteristics and feeding requirements of different materials , various structural parameters , directional mechanism and driving force of the optimal vibrating hopper are different , and the matching problem of the multi - performance index and the multi - effect parameter is always the research difficulty and the key problem of the electromagnetic vibration hopper . Therefore , it is necessary to establish the dynamics and kinematic model of the vibration hopper by using the theoretical calculation method , and further study the structure of the vibration hopper .


Based on the detailed analysis of the current situation of the development of electromagnetic vibration hopper at home and abroad , the main problems existing in the optimization of the structure of the current electromagnetic vibration hopper are analyzed , and the deformation of the spring of the bias - type vibrating hopper plate and the vibration mode of the conveying material are compared with the method of theoretical calculation and finite element simulation .


After systematically analyzing the working principle of the electromagnetic vibration hopper , the dynamic and kinematic model of the disk type electromagnetic vibration hopper is established . Through the research on the theoretical dynamics model , the relation between the upper and lower masses and its relative amplitude is calculated . According to the amplitude - frequency characteristic curve , the influence of the bias coefficient and the radius of different tracks on the relation between the vibration angle and the inclination of the plate spring is analyzed , and the relation between the vibration angle and the forward ( reverse ) direction sliding index and the relation between the sliding motion state and the kinematic parameters of the parts are obtained .


In this paper , the equivalent stiffness of the plate spring theory is calculated by the energy method , and the vertical stiffness of the plate spring theory is modified by the finite element method . The theoretical natural frequency of the electromagnetic vibration hopper with inertia points on the plate spring is calculated , and the natural frequency formula after correction is obtained by means of the finite element method .

【學(xué)位授予單位】：燕山大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2011
【分類(lèi)號(hào)】：TH237.1

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本文編號(hào)：1888742