本文選題：柔性冷彎成型 + 運動控制�。� 參考：《北方工業(yè)大學》2012年碩士論文

【摘要】：隨著汽車、建筑等行業(yè)對變截面冷彎型材需求的提出,柔性冷彎成型技術應運而生。與發(fā)展較為成熟的傳統(tǒng)冷彎成型技術相比,柔性冷彎成型在成型機理、成型機結(jié)構(gòu)研制和成型機控制等發(fā)面都處于初步研究階段。國外如德國、瑞士、法國、日本等已開發(fā)的設備還處于實驗研究階段,國內(nèi)北方工業(yè)大學填補了此項技術在國內(nèi)研究的空白。 柔性冷彎成型因其具有成本低,效率高,壽命長,噪聲低,污染小等優(yōu)點,在汽車、建筑、家具等領域具有廣闊的應用前景。目前,變寬度、變高度和超高強鋼材料的冷彎成型是國內(nèi)外研究的熱點問題。本文先對國外具有代表性的成型機原理進行簡要概述,對成型控制方法做初步探討,并指出設計超高強鋼成型機時面臨的難題。然后闡述了北方工業(yè)大學提出的一種基于雙齒條單齒輪機構(gòu)的成型機,該成型機結(jié)構(gòu)緊湊,承載力大,適用于變寬度和高強鋼材料的冷彎型材的成型。 柔性冷彎成型生產(chǎn)的是截面形狀沿縱向變化的型材,因此需要控制軋輥相對板材做橫向移動,同時要求控制軋輥旋轉(zhuǎn)到與板材邊緣相切。正是板材的前進,軋輥橫向的移動和旋轉(zhuǎn)這三種運動相互協(xié)作才生產(chǎn)出最終所需的變截面型材產(chǎn)品。此論文正是致力于解決柔性冷彎成型中的復雜運動控制問題,提出了軋輥的核心控制算法,并用VC++和OpenGL進行了編程和軌跡仿真,驗證了求取角度的正確性。利用這種算法可以成型出平面任意二維曲線輪廓的冷彎型材,該算法可以集成到開放式的柔性冷彎成型控制系統(tǒng)中,控制伺服電機按程序給定指令運動,從而實現(xiàn)最終的板材成型。 最后,本文針對雙齒條單齒輪機構(gòu)的柔性冷彎成型機的控制問題做了近一步探討。解決了該機型的軌跡規(guī)劃問題和控制齒條移動的電機位置指令分配問題。利用VC++編程求解出齒條移動的插補點信息,并將插補點信息導入到SolidWorks中進行了仿真驗證,通過求得的軌跡和實際軌跡進行比較,驗證了此算法的正確可行性,對控制系統(tǒng)的開發(fā)具有指導和借鑒意義。
[Abstract]:With the demand of the automobile, construction and other industries for the variable section cold bending profile, flexible cold forming technology emerges as the times require. Compared with the traditional cold forming technology, flexible cold forming is in the initial stage of research, such as the forming mechanism, the structure development of the molding machine and the control of the forming machine. Abroad, such as Germany, Switzerland, France, Japan and other developed equipment is still in the stage of experimental research, the domestic Northern University of Technology filled the gap in domestic research. Because of its advantages of low cost, high efficiency, long life, low noise and low pollution, flexible cold forming has a broad application prospect in automobile, building, furniture and other fields. At present, the cold forming of variable width, height and ultra-high strength steel materials is a hot topic at home and abroad. In this paper, the principle of representative molding machine abroad is briefly summarized, the control method of forming is discussed, and the difficulties in designing ultra-high strength steel forming machine are pointed out. Then, a kind of forming machine based on double rack single gear mechanism proposed by Northern University of Technology is described. The machine has compact structure and large bearing capacity, which is suitable for forming cold bending profile of variable width and high strength steel material. Flexible cold forming produces profiles whose section shape changes along the longitudinal direction, so it is necessary to control the roll to move laterally from the sheet to the plate, and to rotate the roll to tangent the edge of the plate at the same time. It is the advance of the plate, the lateral movement and rotation of the roll that cooperate with each other to produce the final product of the variable section profile. This paper is devoted to solving the complex motion control problem in flexible cold forming. The core control algorithm of roll is put forward, and the correctness of angle calculation is verified by programming and trajectory simulation with VC and OpenGL. By using this algorithm, the cold-formed profile of planar two-dimensional curve profile can be formed. The algorithm can be integrated into the open flexible cold-forming control system, and the servo motor can be controlled to move according to the program given instructions. In order to achieve the final plate forming. Finally, the control problem of the flexible cold forming machine of double rack single gear mechanism is discussed in this paper. The problem of locus planning and the assignment of motor position instructions to control rack movement are solved. The interpolation point information of rack movement is solved by VC programming, and the interpolation point information is imported into SolidWorks for simulation verification. The correct feasibility of the algorithm is verified by comparing the obtained trajectory with the actual track. It is of guiding and referential significance to the development of control system.
【學位授予單位】：北方工業(yè)大學
【學位級別】：碩士
【學位授予年份】：2012
【分類號】：TH165

【引證文獻】

相關碩士學位論文 前3條

1 陽振峰;高強鋼三維輥彎成形生產(chǎn)線樣機機械系統(tǒng)動力學分析[D];北方工業(yè)大學;2013年

2 趙n，

本文編號：1821678