外文翻譯--通過實驗確認的三輥卷板機上輥

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1、附錄 Analytical and empirical modeling of top roller position for three-roller cylindrical bending of plates and its experimental verification The charact type of level eristic of level adjust below three rollers Rolling Machine in thisinvestigation is as follows.Using the adjust,the end can be bended

2、without turn around and the whole process of plate coiling including entering、center adjusting 、 pre-bending 、 coiling 、 cylinder proofread can be completedcontinuously；due to whole hydraulic pressure driving protocol,the structure wassimplified,and speed and pressure was easily controlled in the pr

3、ocess of platecoiling；The setup of the center adjusting and the equip of supporting,the preciseand quality of plate coiling was improved；owing to the simplified structure,theoperation and maintenance is easy to carried out. KeyWord: Bending Machine； the work rolls； mechanical analysis； the transmiss

4、ion system 1、 Reported research on the forming of cylindrical shells mostly discusses the modeling and analysis of the process. reported the geometrical analysis of the single pass elasto-plastic bending of beams on the three-roller pyramid benders by assuming triangular moment distribution between

5、the rollers. Developed model for the bending force and bending moment was based on the contact point shift between the plate and top roll from the vertical centerline of the top roll. described closed loop shape control of three-roller bending process. The presented scheme accomplishes the shape con

6、trol by measuring the loaded shape, the loaded moment and effective beam rigidity of the material in real time. discussed the distribution of curvature and bending moment in accordance with the displacement and rotation of the rolls by simulating the deformation of work piece with U-shaped cross-sec

7、tion in a three-roller bending process. They reported the relationship between the bending moment and the curvature of the work piece by elementary method, which was further used to build up a process model combining the geometries for three-roller bending process. 2、 Reported research on the formin

8、g of cylindrical shells mostly discusses the modeling and analysis of the process. reported the geometrical analysis of the single pass elasto-plastic bending of beams on the three-roller pyramid benders by assuming triangular moment distribution between the rollers. Developed model for the bending

9、force and bending moment was based on the contact point shift between the plate and top roll from the vertical centerline of the top roll. described closed loop shape control of three-roller bending process. The presented scheme accomplishes the shape control by measuring the loaded shape, the loade

10、d moment and effective beam rigidity of the material in real time. discussed the distribution of curvature and bending moment in accordance with the displacement and rotation of the rolls by simulating the deformation of work piece with U-shaped cross-section in a three-roller bending process. They

11、reported the relationship between the bending moment and the curvature of the work piece by elementary method, which was further used to build up a process model combining the geometries for three-roller bending process. 3、 Reported research on the forming of cylindrical shells mostly discusses the

12、modeling and analysis of the process. reported the geometrical analysis of the single pass elasto-plastic bending of beams on the three-roller pyramid benders by assuming triangular moment distribution between the rollers. Developed model for the bending force and bending moment was based on the con

13、tact point shift between the plate and top roll from the vertical centerline of the top roll. described closed loop shape control of three-roller bending process. The presented scheme accomplishes the shape control by measuring the loaded shape, the loaded moment and effective beam rigidity of the m

14、aterial in real time. discussed the distribution of curvature and bending moment in accordance with the displacement and rotation of the rolls by simulating the deformation of work piece with U-shaped cross-section in a three-roller bending process. They reported the relationship between the bending

15、 moment and the curvature of the work piece by elementary method, which was further used to build up a process model combining the geometries for three-roller bending process. 4、 Conclusion Developed analytical and empirical models were verified with the experiments on three-roller cylindrical bendi

16、ng. Following important conclusions were derived out of the reported work: (1) Analytical model based on concept 3, simplifies the calculation procedure for the machine-setting parameters as it expresses the top roller position as an explicit function of desired radius of curvature. (2) Agreement of

17、 empirical results with that of the experiments and analytical results based on concept 3 proves the correctness of the procedure. (3) For the small to medium scale fabricators, where the volume of production does not permit the acquisition of automated close loop control systems, developed models c

18、an be proved to be simple tool for the first hand estimation of machine setting parameters for required product dimensions. (4) Consideration of effect of initial strain and change of modulus of elasticity during deformation on spring back, in analytical/empirical model will further improve the accu

19、racy of prediction of top roller position. (5) Further, empirical model based on the experimental loaded curvature distribution between roller supports would consider the top roller-plate contact point shift and will lead to more accurate prediction of top roller position. 通過實驗確認的三輥卷板機上輥 位置的分析和經驗模型

20、本文研究的水平對稱式卷板機特點如下：采用水平下調式，即 下 輥可作水平移動，可實現不用調頭便可預彎端頭，使進料、對中、預彎、卷圓、矯圓整個卷板過程連續(xù)完成，利于提高生產效率，降低工人勞動強度；設置板料對中裝置和支承輥裝置，利于提高卷板精度和卷板質量；采用全液壓驅動，使設備結構簡化，便于卷板過程中的速 度和壓力控制，起停、換向靈活，運行平穩(wěn)，操作方便；結構簡單， 便于操作和維護維修，符合現場技術工人的操作和維修水平，高效實用。 1、本文是研究形成的圓柱殼的大多是討論的建模和分析的過程。通 過幾何分析對三輥對稱式卷板機的彈塑性彎曲，假設三角力矩分配之 間的軋輥。發(fā)展模式的彎曲力和彎矩的基礎上，上輥

21、通過在兩下輥對 稱中央作上下移動，而兩下輥的左、右旋轉。所描述的閉環(huán)板形控制 的三輥彎曲的過程。由提出的 計 劃，完成板形控制測量加載的形狀，加載和有效剛度的材料。在討論的分布曲率和彎矩在按照位移和旋 轉的輥模擬變形的工件與 U 形截面的過程中和他們之間的關系，彎 矩和曲率的工件由初等方法。這是進一步用來建立相結合的幾何構型 為三輥彎曲的過程 。 2、對現有的控制系統(tǒng)的產品模型進一步開發(fā)，以獲得與常數和連續(xù) 變曲率。模型的使用在模擬制造圓柱殼從板，這就需要連續(xù)彎曲，這 就得到了事先的彎曲資料。他們用重疊包括來自事先的彎曲的塑料的 地域的連續(xù)的交疊處理二維的三點彎曲做模型程序了。通過數學模 型，

22、確定上輥對板內部彎曲阻力，多通過四輥薄板彎曲行動隨的原則，彎曲的過程中為單一通過和多次通過彎曲?；趯ΨQ的做法，以確定 該地區(qū)的板塊推出，在順利形成彎曲板。分析模型估計上輥位置作為 期望曲率半徑功能，為多通過三輥形成圓筒，就彈性模量 (e)而論實 際變動的變形 之下可知，計算大于恒定值的。 3、總上所述僅有的研究是可利用在連續(xù)三輥卷制成形的板材。 試驗 的分析是難明確地發(fā)現上輥位置作為期望曲率半徑功能并且它通過 非線性規(guī)劃要求對封閉環(huán)形控制或者 CNC 的用途控制系統(tǒng)可能改進 準確性和過程的一貫性，但這樣系統(tǒng)承購和維護是昂貴的，并且不是 中小規(guī)模的卷板制造者可能付得起的對。當前分析的目的將明確

23、開發(fā) 模型為上輥位置作為期望曲率半徑功能為圓柱形殼彎曲因此根據分 析和經驗主義的方法。 經驗模型被開發(fā)根據上輥位置對被滿載的曲率半徑，中心距獲得為兩下輥半徑之間的。在三輥彎曲的 過程，在一張或幾張通過板材由兩個側輥和滿載的曲率半徑對通過調整中心上輥?？梢愿淖儍蓚容佒g的距離。 在變形期間，所有三輥軸被設置 互相平行。卷板機的大小由參數定義。例如最大的彎曲半徑以板材的 最大間距和設計的厚度和相當數量平直的部分保留在板材的端部。 4、結論對三輥卷板機分析與實證模型的實驗驗證，推導出以下重要結論： （ 1）分析模型基于概念 3，它體現了上輥位置是期望曲率半徑 的函數，簡化了計算過程。 （ 2）實證結果表明，基于概念 3 的實驗和分析結果，證明了有 關過程的正確性。 （ 3）對于中小型規(guī)模的 生產廠家，由于其生產量小，所以不需要 購買自動閉環(huán)控制系統(tǒng)，發(fā)展模式被證明是估算所需產品機械參數的 最簡便的工具。 （ 4）在回彈過程，初應變和彈性模量變化的影響，分析 /實證模 型，將進一步提高上輥位置的計算精度。