本文關(guān)鍵詞：3000噸自動(dòng)矯直液壓機(jī)液壓系統(tǒng)設(shè)計(jì)，由筆耕文化傳播整理發(fā)布。

3000噸自動(dòng)矯直液壓機(jī)液壓系統(tǒng)設(shè)計(jì)

3000噸自動(dòng)矯直液壓機(jī)液壓系統(tǒng)設(shè)計(jì)

近年來(lái),科學(xué)技術(shù)的進(jìn)步,推動(dòng)機(jī)械加工業(yè)和制造業(yè)快速發(fā)展,對(duì)各種熱拔無(wú)縫鋼管的需求量增加,由于鋼管加工的關(guān)鍵工裝——芯棒軸的平直度對(duì)無(wú)縫鋼管的質(zhì)量有重要影響,而芯棒軸在熱處理過(guò)程中會(huì)發(fā)生一定的彎曲變形,因此矯直技術(shù)和矯直機(jī)械的重要性日益體現(xiàn)。傳統(tǒng)的矯直工藝由于效率、精度、矯直范圍等不足已不能適應(yīng)企業(yè)生產(chǎn)和發(fā)展要求,3000噸自動(dòng)矯直機(jī)為滿足寶鋼無(wú)縫鋼管芯棒軸矯直需要而設(shè)計(jì)研發(fā),是目前國(guó)內(nèi)矯直力最大的自動(dòng)液壓矯直機(jī),該機(jī)的成功研發(fā)對(duì)于大型軸類(lèi)零件的矯直具有普遍意 義。論文介紹了YJD45-3000液壓矯直機(jī)基本結(jié)構(gòu)和各部分的工作原理,借鑒國(guó)內(nèi)外矯直機(jī)的研究成果與相關(guān)技術(shù),從3000噸自動(dòng)矯直機(jī)大壓力、大流量以及換向運(yùn)動(dòng)和精確的矯直下壓量要求等實(shí)際工況出發(fā),完成了液壓系統(tǒng)的設(shè)計(jì)計(jì)算。對(duì)比淺析淺析各種制約方案優(yōu)劣,選用高頻響比例方向閥為核心制約碩博在線論文網(wǎng)件,采用電液比例制約系統(tǒng),結(jié)合了電氣和液壓兩方面的優(yōu)點(diǎn),制約性能好,傳動(dòng)能力大,并且便于計(jì)算機(jī)制約。系統(tǒng)其他主要閥選用大流量插裝閥,詳細(xì)設(shè)計(jì)了矯直機(jī)壓頭部分和各個(gè)輔助功能回路的液壓系統(tǒng),通過(guò)對(duì)液壓回路和碩博在線論文網(wǎng)器件流量、壓力等參數(shù)的計(jì)算,完成了液壓系統(tǒng)主要碩博在線論文網(wǎng)件選型,并對(duì)液壓系統(tǒng)發(fā)熱和壓降進(jìn)行驗(yàn)算,確保系統(tǒng)設(shè)計(jì)的合理性。壓頭部分的比例位置制約是矯直機(jī)液壓制約系統(tǒng)的重要組成部分,詳細(xì)淺析淺析了其基本結(jié)構(gòu)和原理,根據(jù)液壓系統(tǒng)流量連續(xù)性方程和力平衡方程,建立了各個(gè)環(huán)節(jié)傳遞函數(shù)形式的數(shù)學(xué)模型,最后推導(dǎo)出整個(gè)閥控缸系統(tǒng)的傳遞函數(shù)框圖,淺析淺析確定了模型中的主要參數(shù)值。運(yùn)用MATLAB及其制約工具箱LTIVIEW和淺析淺析工具SISO Design Tool對(duì)建立的系統(tǒng)模型進(jìn)行仿真和特性淺析淺析,增加PID制約器,改善系統(tǒng)響應(yīng)速度和穩(wěn)定性,仿真得到校正后系統(tǒng)的負(fù)載干擾誤差,最后對(duì)比例位置制約系統(tǒng)進(jìn)行了誤差淺析淺析,結(jié)果滿足矯直機(jī)制約要求,系統(tǒng)建模和仿真結(jié)果為后續(xù)的調(diào)試運(yùn)行提供了一定的理論依據(jù)和參考。通過(guò)現(xiàn)場(chǎng)調(diào)試情況,該矯直機(jī)運(yùn)行良好,可順利完成工藝動(dòng)作和各項(xiàng)制約要求,驗(yàn)證了系統(tǒng)設(shè)計(jì)和制約方案的合理性。由此可見(jiàn),微機(jī)電液比例位置制約系統(tǒng)的應(yīng)用研究對(duì)提高矯直機(jī)的制約性能、矯直精度具有重要的理論價(jià)值和實(shí)際工程意 義。

【Abstract】 In recent years, the progress of technology promoted the development of machinery industry and manufacturing, which is in heavy demand of hot-drawn seamless steel tube. Owing to the glancing flatness of mandril which is the key frock in the process of seamless steel tube has important influence on the quality of steel tube,and flexural deformation of axial parts during the heat treatment,so the importance of straightening technology and straightening machine is obvious. The traditional straightening process cannot satisfy the developing requirement of enterprise in efficiency, precision, straightening range and so on. The 3000 tons automatic straightening machine which is a fully automatic hydraulic straightening machine with the most pressure at present in China is designed for the Baosteel to straighten the mandril of seamless steel tube,which has universal significance to the straightening of large-sized shaft-parts.The basic structure and operating principle of YJD45-3000 automatic hydraulic pressure straightening machine is introduced. According to draw on the research findings and straightening technology at home and aboard, the hydraulic pressure system of is designed, which is based on the working condition of mass flow, mass pressure, inverting move and precise rolling reduction of 3000 tons automatic hydraulic pressure straightening machine. Comparing the analysis on different control schemes, the proportional direction value with high frequency response is used as the core control element. The applications of electro-hydraulic proportional control technology, which incorporated the advantage of both electricity and hydraulic technology, has good control performance, large transmission capacity and is convenient for computer-control. The other valves are mainly cartridge valve with large flow. The hydraulic pressure system of seaming chuck and secondary circuit are designed detailedly, and then the main valves and elements of hydraulic system are opted which is based on the calculation of pressure, flow and so on. At last the heat and pressure drop is checked to ensure that the system is reasonable design.The proportional position control system of seaming chuck is the important component of hydraulic control system of straightening machine and its configuration and principles are analyzed. According to the flow continuity equation and force balance equation, mathematical model of each link with the form of transfer function is established to deduce the transfer function block diagram of cylinder system controlled by the valve, and then the parameter value is worked out. MATLAB with its control toolbox-LTIVIEW and SISO Design Tool are used to accomplish the simulation and property analysis of the model. The stability and response rate of the system has been improved by PID controller and the error analysis of system is researched considering load disturbance, the result of which is satisfying. Modelling and simulation result provide theoretical basis and reference for the subsequent debug and run procedure. The straightening machine runs well and can achieve the technical motions and control demands during site debugging, which prove that the design and control scheme is feasible. Thus, the application study of electro-hydraulic proportional position system controlled by computer is valuable in theory and significant in projects domain to improve the control performance and straightening precision.

【關(guān)鍵詞】 矯直機(jī)； 液壓系統(tǒng)； 比例位置制約； MATLAB；
【Key words】 Straightening Machine； Hydraulic System； Proportional Position Control； MATLAB；

更多論文推薦: 各專業(yè)論文 海量論文下載

上一篇文章： 基于蟻群算法—模糊技術(shù)的火電廠主汽溫制約系統(tǒng)的探討

下一篇文章： 長(zhǎng)行程新型磁力操動(dòng)機(jī)構(gòu)的探討

  本文關(guān)鍵詞：3000噸自動(dòng)矯直液壓機(jī)液壓系統(tǒng)設(shè)計(jì)，，由筆耕文化傳播整理發(fā)布。

本文編號(hào)：189863