發(fā)布時間：2018-05-20 14:06

  本文選題：擺式剪切機 + 運動學�。� 參考：《內(nèi)蒙古科技大學》2015年碩士論文

【摘要】：擺式剪切機是連鑄連軋生產(chǎn)線上將薄板切斷的設備，連鑄連軋生產(chǎn)線的生產(chǎn)流程工藝過程復雜，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是引進德國的CSP薄板連鑄連軋生產(chǎn)線上的設備。當擺式剪切機按照規(guī)定的正轉(zhuǎn)（從機架側(cè)觀察）運行一段時間之后，維護人員檢測到滑槽內(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，以此為背景對擺式剪切機進行研究。 首先參照擺式剪切機的實體機械和裝配圖及零件圖理清其整體組成，提取出完成剪切運動的主體構(gòu)件。進而對擺式剪切機的工作原理和運行方式做合理分析，同時了解擺式剪切機的一些重要參數(shù)，掌握其與其他剪切機的異同點。 其次因為擺式剪切機的構(gòu)件結(jié)構(gòu)比較復雜，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軟件中進行仿真分析。ADAMS軟件是進行運動學、動力學和靜力學研究的軟件。ADAMS軟件以多體系統(tǒng)動力學為基礎(chǔ)，對機械系統(tǒng)進行建模、數(shù)值求解。擺式剪切機的剪切性能直接反應在剪切質(zhì)量和剪切效果中，為解決其在剪切運行到一定階段后單側(cè)銅板嚴重磨損致使不能正常剪切的問題，提出調(diào)整偏心曲軸的轉(zhuǎn)向為反轉(zhuǎn)的方案，對比正反轉(zhuǎn)運動中擺式剪切機的運動特性和動力特性。 最后在ADAMS中先設置各種參數(shù)，施加約束副。根據(jù)生產(chǎn)實踐中的驅(qū)動設置仿真構(gòu)件的驅(qū)動，，該擺式剪切機有兩個動力件，需對偏心曲軸和液壓缸設置驅(qū)動。分析擺式剪切機正轉(zhuǎn)方向的運動學，測出各構(gòu)件的運動狀態(tài)及剪切性能。改變偏心曲軸的轉(zhuǎn)向為逆時針反轉(zhuǎn)，對比分析各構(gòu)件正反轉(zhuǎn)的運動轉(zhuǎn)態(tài)和剪切性能。從運動學方向做了分析后，修改仿真模型的約束副，使之符合動力學研究條件。理論上分析出剪切機剪刃的剪切力，運動過程中施加在剪刃上。并對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。對不同間隙對接觸力的影響分別作正反轉(zhuǎn)研究，再對比二者之間的差異，從而得出調(diào)整偏心曲軸對擺式剪切機剪切性能的影響。 本文通過對擺式剪切機的探討及正反轉(zhuǎn)對擺式剪切機運動學和動力學各方面的影響做分析比較，了解到改變偏心曲軸轉(zhuǎn)向后不會降低擺式剪切機的剪切質(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.
【學位授予單位】：內(nèi)蒙古科技大學
【學位級別】：碩士
【學位授予年份】：2015
【分類號】：TG333.21

【參考文獻】

相關(guān)期刊論文 前4條

1 文榮,吳德隆;帶間隙空間結(jié)構(gòu)的動力學特性分析[J];中國空間科學技術(shù);1998年01期

2 李新勇;王華棟;;基于虛擬樣機技術(shù)的折剪兩用機床主機建模與仿真[J];制造技術(shù)與機床;2008年08期

3 王耀;趙建剛;趙春禾;王元輝;;擺式剪切機機架的靜態(tài)和動態(tài)分析研究[J];重型機械科技;2007年03期

4 黃青青;吳海濤;劉泓斌;;基于ADAMS的自動送料沖床機構(gòu)運動學仿真[J];新技術(shù)新工藝;2014年05期

本文編號：1914918