本文選題：擺式剪切機(jī) + 運(yùn)動(dòng)學(xué)��； 參考：《內(nèi)蒙古科技大學(xué)》2015年碩士論文

【摘要】：擺式剪切機(jī)是連鑄連軋生產(chǎn)線上將薄板切斷的設(shè)備，連鑄連軋生產(chǎn)線的生產(chǎn)流程工藝過(guò)程復(fù)雜，多數(shù)企業(yè)選用生產(chǎn)流程較精確的CSP生產(chǎn)線，本文中要研究的擺式剪切機(jī)是引進(jìn)德國(guó)的CSP薄板連鑄連軋生產(chǎn)線上的設(shè)備。當(dāng)擺式剪切機(jī)按照規(guī)定的正轉(zhuǎn)（從機(jī)架側(cè)觀察）運(yùn)行一段時(shí)間之后，維護(hù)人員檢測(cè)到滑槽內(nèi)銅板出現(xiàn)磨損現(xiàn)象，降低了薄板的剪切精度和質(zhì)量，以此為背景對(duì)擺式剪切機(jī)進(jìn)行研究。 首先參照擺式剪切機(jī)的實(shí)體機(jī)械和裝配圖及零件圖理清其整體組成，提取出完成剪切運(yùn)動(dòng)的主體構(gòu)件。進(jìn)而對(duì)擺式剪切機(jī)的工作原理和運(yùn)行方式做合理分析，同時(shí)了解擺式剪切機(jī)的一些重要參數(shù)，掌握其與其他剪切機(jī)的異同點(diǎn)。 其次因?yàn)閿[式剪切機(jī)的構(gòu)件結(jié)構(gòu)比較復(fù)雜，需要在Solidworks軟件中建立構(gòu)件模型并裝配，以Parasolid格式保存，后引入ADAMS軟件中進(jìn)行仿真分析。ADAMS軟件是進(jìn)行運(yùn)動(dòng)學(xué)、動(dòng)力學(xué)和靜力學(xué)研究的軟件。ADAMS軟件以多體系統(tǒng)動(dòng)力學(xué)為基礎(chǔ)，對(duì)機(jī)械系統(tǒng)進(jìn)行建模、數(shù)值求解。擺式剪切機(jī)的剪切性能直接反應(yīng)在剪切質(zhì)量和剪切效果中，為解決其在剪切運(yùn)行到一定階段后單側(cè)銅板嚴(yán)重磨損致使不能正常剪切的問(wèn)題，提出調(diào)整偏心曲軸的轉(zhuǎn)向?yàn)榉崔D(zhuǎn)的方案，對(duì)比正反轉(zhuǎn)運(yùn)動(dòng)中擺式剪切機(jī)的運(yùn)動(dòng)特性和動(dòng)力特性。 最后在ADAMS中先設(shè)置各種參數(shù)，施加約束副。根據(jù)生產(chǎn)實(shí)踐中的驅(qū)動(dòng)設(shè)置仿真構(gòu)件的驅(qū)動(dòng)，，該擺式剪切機(jī)有兩個(gè)動(dòng)力件，需對(duì)偏心曲軸和液壓缸設(shè)置驅(qū)動(dòng)。分析擺式剪切機(jī)正轉(zhuǎn)方向的運(yùn)動(dòng)學(xué)，測(cè)出各構(gòu)件的運(yùn)動(dòng)狀態(tài)及剪切性能。改變偏心曲軸的轉(zhuǎn)向?yàn)槟鏁r(shí)針?lè)崔D(zhuǎn)，對(duì)比分析各構(gòu)件正反轉(zhuǎn)的運(yùn)動(dòng)轉(zhuǎn)態(tài)和剪切性能。從運(yùn)動(dòng)學(xué)方向做了分析后，修改仿真模型的約束副，使之符合動(dòng)力學(xué)研究條件。理論上分析出剪切機(jī)剪刃的剪切力，運(yùn)動(dòng)過(guò)程中施加在剪刃上。并對(duì)曲軸和擺架接觸位置施加接觸力，分析各構(gòu)件的受力變化。對(duì)不同間隙對(duì)接觸力的影響分別作正反轉(zhuǎn)研究，再對(duì)比二者之間的差異，從而得出調(diào)整偏心曲軸對(duì)擺式剪切機(jī)剪切性能的影響。 本文通過(guò)對(duì)擺式剪切機(jī)的探討及正反轉(zhuǎn)對(duì)擺式剪切機(jī)運(yùn)動(dòng)學(xué)和動(dòng)力學(xué)各方面的影響做分析比較，了解到改變偏心曲軸轉(zhuǎn)向后不會(huì)降低擺式剪切機(jī)的剪切質(zhì)量，各構(gòu)件受到的力及曲軸與擺架的接觸力影響微小，因而轉(zhuǎn)向的調(diào)整可以起到改善銅板一側(cè)磨損的作用。
[Abstract]:The tilting shearing machine is the equipment to cut off the thin plate in the continuous casting and rolling production line. The production process of the continuous casting and rolling line is complex, and most enterprises choose the CSP production line with more accurate production process. The pendulum shearing machine studied in this paper is the equipment of CSP thin plate continuous casting and rolling production line imported from Germany. When the tilting shearing machine runs in accordance with the prescribed positive rotation (observed from the side of the rack) for a period of time, the maintainer detects the wear phenomenon of the copper plate in the chute, which reduces the shearing accuracy and quality of the thin plate. Based on this background, the tilting shearing machine is studied. Firstly, according to the mechanical and assembly drawings and parts drawing of the pendulum shearing machine, the whole components are sorted out, and the main components that complete the shearing motion are extracted. Then the working principle and operation mode of the pendulum shearing machine are analyzed reasonably. At the same time, some important parameters of the pendulum shearing machine are understood, and the similarities and differences between the tilting shearing machine and other shears are grasped. Secondly, because the component structure of pendulum shearing machine is complex, it is necessary to set up component model and assemble it in Solidworks software, save it in Parasolid format, and then introduce ADAMS software to simulate analysis. Adams software is used for kinematics. The software of dynamics and statics. Adams software is based on the dynamics of multi-body system. The mechanical system is modeled and solved numerically. The shear performance of the pendulum shearing machine is directly reflected in the shear quality and shear effect. In order to solve the problem that the unilateral copper plate can not be shearing normally due to serious wear after the shear operation to a certain stage. A scheme of adjusting the steering of eccentric crankshaft as inversion is proposed, and the kinematic and dynamic characteristics of the pendulum shearing machine in the positive and inverse motion are compared. Finally, a variety of parameters are first set in the ADAMS, and the constraint pair is applied. According to the driving and setting of simulation component in production practice, the pendulum shearing machine has two power parts, which need to be driven by eccentric crankshaft and hydraulic cylinder. The kinematics of the forward turning direction of the pendulum shearing machine is analyzed, and the motion state and shear performance of each component are measured. By changing the eccentric crankshaft turning into counterclockwise inversion, the kinematic and shear behavior of each component is compared and analyzed. After the kinematics analysis, the constraint pair of the simulation model is modified to meet the dynamic research conditions. The shear force of the shear blade is analyzed theoretically and applied to the cutting edge during the movement. The contact force is applied to the contact position of crankshaft and pendulum, and the force change of each component is analyzed. The influence of different clearance on contact force is studied and the difference between them is compared. The influence of adjusting eccentric crankshaft on shear performance of pendulum shearing machine is obtained. Through the discussion of the pendulum shearing machine and the analysis and comparison of the effect of the forward and backward rotation on the kinematics and dynamics of the pendulum shearing machine, it is found that the shear quality of the pendulum shearing machine will not be reduced by changing the eccentric crankshaft steering. The force of each component and the contact force between crankshaft and pendulum have little effect, so the adjustment of steering can improve the wear of one side of copper plate.
【學(xué)位授予單位】：內(nèi)蒙古科技大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類(lèi)號(hào)】：TG333.21

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本文編號(hào)：1914918