發(fā)布時(shí)間：2019-01-11 11:01

【摘要】：隨著中國城市化和工業(yè)化進(jìn)程的發(fā)展,鋼材的消費(fèi)越來越大。我國的鋼鐵工業(yè)要實(shí)現(xiàn)結(jié)構(gòu)的調(diào)整和資源節(jié)約的要求,實(shí)現(xiàn)我國鋼鐵工業(yè)由大到強(qiáng)的轉(zhuǎn)變。同時(shí)由于國內(nèi)鋼材市場和國際鋼材市場的激烈競爭,越來越多的鋼鐵企業(yè)開始關(guān)注無頭軋制技術(shù)。傳統(tǒng)的無頭軋制中間坯連接技術(shù)存在連接時(shí)間長及連接設(shè)備較龐大、受坯料間隙時(shí)間的影響使生產(chǎn)率受到限制、無法避免的帶坯切頭去尾帶來了成材率的損失等問題,因此有必要提出一種新型的無頭軋制中間坯連接裝置。首先,本文通過對無頭軋制技術(shù)的分析,選擇了連接時(shí)間最短的中間坯連接技術(shù)—快速剪切擠壓連接法。設(shè)計(jì)出一種可以實(shí)現(xiàn)中間坯連接的裝置,確定了中間坯連接裝置各個(gè)零件之間的相互運(yùn)動(dòng)關(guān)系以及連接裝置的結(jié)構(gòu)設(shè)計(jì)。計(jì)算出中間坯連接裝置的各個(gè)能力參數(shù),對設(shè)計(jì)的部件進(jìn)行了計(jì)算校核。其次,利用三維CAD軟件Solidworks對中間坯快速剪切擠壓連接裝置進(jìn)行實(shí)體建模,并在裝配模式下進(jìn)行裝配,之后將裝配體導(dǎo)入到有限元分析軟件Ansys Workbench中進(jìn)行模態(tài)分析,分析每階模態(tài)對連接裝置的影響,避免連接裝置發(fā)生共振。最后,將連接裝置的裝配體模型導(dǎo)入到機(jī)械系統(tǒng)動(dòng)力學(xué)自動(dòng)分析軟件Adams進(jìn)行運(yùn)動(dòng)學(xué)仿真分析,給出主要構(gòu)件的運(yùn)動(dòng)規(guī)律、上下刀尖的水平速度以及運(yùn)動(dòng)軌跡,并確保了分析結(jié)果與理論分析保持一致;再對連接裝置的裝配體模型進(jìn)行動(dòng)力學(xué)和剛?cè)狁詈戏治?查看主要部件受力情況以及應(yīng)力分布狀況,繼而判斷主要部件滿足生產(chǎn)需要。
[Abstract]:With the development of urbanization and industrialization in China, the consumption of steel is increasing. The iron and steel industry of our country should realize the structural adjustment and the requirement of saving resources, and realize the transformation of the iron and steel industry of our country from big to strong. At the same time, due to the fierce competition between domestic steel market and international steel market, more and more steel enterprises begin to pay attention to headless rolling technology. The traditional technology of interbillet connection in headless rolling has many problems, such as long connecting time and large connecting equipment, limited productivity due to the influence of blank gap time, and the loss of finished product rate caused by cutting and tail removal of blanks, etc. Therefore, it is necessary to put forward a new type of end-less rolling intermediate billet connection device. Firstly, through the analysis of the headless rolling technology, we select the shortest connecting time of the intermediate billet connection technology-rapid shear extrusion bonding method. A device is designed to realize the connection of the intermediate billet, and the mutual kinematic relationship between the parts of the device and the structural design of the connecting device are determined. The capability parameters of the intermediate billet connection device are calculated and the designed components are calculated and checked. Secondly, the 3D CAD software Solidworks is used to model the interbillet rapid shearing extruding device, and then the assembly is assembled in the assembly mode, and then the assembly body is imported into the finite element analysis software Ansys Workbench for modal analysis. The influence of each mode on the connection device is analyzed to avoid resonance. Finally, the assembly model of the connecting device is introduced into the mechanical system dynamics automatic analysis software Adams for kinematics simulation analysis, and the motion law of the main components, the horizontal velocity of the upper and lower blade tips and the motion track are given. The results of the analysis are consistent with the theoretical analysis. Then the dynamic and rigid-flexible coupling analysis of the assembly model of the connecting device is carried out to see the stress situation and stress distribution of the main components, and then to judge that the main components meet the production needs.
【學(xué)位授予單位】：燕山大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2016
【分類號】：TG333

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