本文選題：挖鈔機構(gòu)　切入點：動力學仿真　出處：《東北大學》2011年碩士論文　論文類型：學位論文

【摘要】：自動柔性材料處理機械在各個領(lǐng)域的應(yīng)用非常廣泛,從打印機、復印機等辦公設(shè)備的取紙和送紙機構(gòu),到面料的自動化處理,再到點鈔機、自動取款機的挖鈔和送鈔機構(gòu)等。特別是自動取款機在出鈔的時候可能會出現(xiàn)卡鈔、疊鈔和鈔票撕裂等故障。因此,合理設(shè)計挖鈔和送鈔機構(gòu),保證紙幣運送的平穩(wěn)可靠已經(jīng)成為自動取款機設(shè)計的當務(wù)之急。 本文根據(jù)自動取款機挖鈔機構(gòu)中紙幣和捻鈔輪、剝離輪、導向輪間的相互作用力來推導出紙幣的運動方程式,其中用修正后的庫倫摩擦力來代替紙幣和各個滾輪之間的接觸力。文中把挖鈔過程分為捻鈔、粘連紙幣剝離和進鈔三個階段,并對三個階段分別建立相應(yīng)的力學模型。 本文對建立的各個階段的力學模型,利用MATLAB程序編寫相應(yīng)的程序來模數(shù)值擬捻鈔階段中捻鈔輪轉(zhuǎn)速和正壓力對捻鈔成功率的影響、粘連紙幣剝離階段中剝離輪轉(zhuǎn)矩和正壓力對兩張粘連紙幣和單張紙幣剝離的影響、進鈔階段中導向輪轉(zhuǎn)動慣量和其與紙幣間動摩擦系數(shù)以及正壓力對進鈔的影響,得到了相關(guān)參數(shù)的影響曲線和優(yōu)化參數(shù)。 本文利用多體動力學軟件RecurDyn中媒體傳送模塊(MTT2D/3D)對挖鈔機構(gòu)中挖鈔過程的三個階段進行了不同工況下的動力學仿真分析,取得了相關(guān)參數(shù)對紙幣運行動態(tài)的影響,并與數(shù)值得到的數(shù)據(jù)進行比較,驗證了所建立理論模型的準確性。
[Abstract]:Automatic flexible material processing machines are widely used in various fields, ranging from paper fetching and feeding mechanisms of office equipment such as printers, photocopiers, to automatic processing of fabrics, to money counting machines. ATM banknote digging and delivery institutions, etc., especially ATMs may have problems such as cards, folding and tearing banknotes when they issue banknotes. Therefore, the rational design of banknote digging and delivery institutions, To ensure the smooth and reliable delivery of paper money has become a top priority in ATM design. In this paper, the motion equation of banknote is deduced according to the interaction between banknote and twisting wheel, peeling wheel and guide wheel in ATM banknote digging mechanism. In this paper, the modified Coulomb friction is used to replace the contact force between banknotes and rollers. In this paper, the process of banknote digging is divided into three stages: twisting, adhesion, stripping and entering, and the corresponding mechanical models are established for each of the three stages. In this paper, a MATLAB program is used to simulate the effect of rotational speed and positive pressure of twisting wheel on the success rate of twisting banknote. The effect of torque and positive pressure on the peeling of two adhesive notes and single bills in the peeling stage, the moment of inertia of the guide wheel in the process of banknote entry, the dynamic friction coefficient between the two notes and the positive pressure on the banknote entry. The influence curves and optimization parameters are obtained. In this paper, the media transfer module (MTT2D / 3D) of multi-body dynamics software RecurDyn is used to simulate and analyze the three stages of banknote digging process in a banknote digging mechanism under different operating conditions, and the influence of relevant parameters on the running dynamics of banknotes is obtained. Compared with the numerical data, the accuracy of the theoretical model is verified.
【學位授予單位】：東北大學
【學位級別】：碩士
【學位授予年份】：2011
【分類號】：TH693

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