本文選題：兩輥卷板 + 成形力　； 參考：《燕山大學》2015年碩士論文

【摘要】：利用具有高彈性的介質(zhì)(例如聚氨酯橡膠)對金屬板材進行兩輥滾彎成形是一種先進的板材成形工藝,這種工藝極大的提高了零件的成形精度和表面質(zhì)量。在生產(chǎn)設計一臺兩輥卷板機時,為了使其結構達到最優(yōu),必須對成形力這一參數(shù)進行合理的選擇與確定。本文通過有限元軟件ABAQUS對其進行了探究。由于兩輥卷板機所卷制的金屬板材一般為薄板,其厚度方向尺寸相對于成型輥直徑可以忽略,這并不影響對成形力的預判,因此可以將有板材的兩輥實驗簡化為無板材的兩輥實驗(以下簡稱兩輥模型)。為了便于數(shù)據(jù)處理,將其成形力曲線轉(zhuǎn)化為單位面積成形力曲線,并分析了不同單位面積成形力曲線之間的變化規(guī)律。接著分析了輥板模型單位面積成形力曲線之間的變化規(guī)律,然后尋找兩輥模型與輥板模型單位面積成形力曲線之間的共通之處,并用數(shù)字進行量化,這樣就可以將具有一定幾何尺寸的兩輥實驗轉(zhuǎn)化為對應幾何尺寸的輥板實驗,使兩輥實驗進一步簡化。之后再對不同幾何尺寸之間的輥板模型的單位面積成形力曲線進行研究,找到了其內(nèi)在聯(lián)系。這樣就可以在同種橡膠材質(zhì)下,根據(jù)一個輥板模型的成形力作為基準,去逆推不同幾何尺寸下的輥板模型的成形力,進而轉(zhuǎn)化為生產(chǎn)設計一臺兩輥卷板機時所需的成形力。最后利用實驗結果與仿真結果進行比較,驗證前面所得到的結果的準確性,從而也評估了有限元仿真分析的可行性。
[Abstract]:Two-roll rolling forming of metal sheet with high elastic medium (such as polyurethane rubber) is an advanced sheet forming process, which greatly improves the forming accuracy and surface quality of the parts. In order to optimize the structure of a two-roll rolling machine, the parameter of forming force must be reasonably selected and determined. This paper explores the finite element software Abaqus. Because the sheet metal rolled by the two-roll rolling machine is usually a thin plate, its thickness direction size can be neglected relative to the diameter of the forming roll, which does not affect the pre-judgment of forming force. Therefore, the two-roll experiment with sheet metal can be simplified as two-roll experiment without sheet metal (hereinafter referred to as two-roll model). For the convenience of data processing, the forming force curve is transformed into the forming force curve per unit area, and the law of variation between the forming force curves per unit area is analyzed. Then, the changing law of forming force curve per unit area of roll plate model is analyzed, and the common place between the two roll model and the forming force curve per unit area of roll plate model is found, and the numerical quantification is used to measure the common place between the two roll model and the forming force curve per unit area of roll plate model. In this way, the two-roll experiment with certain geometric size can be transformed into the roll plate experiment with corresponding geometric size, and the two-roll experiment can be further simplified. After that, the forming force curves per unit area of the roll plate model with different geometric sizes are studied, and the internal relations are found. In this way, under the same rubber material, according to the forming force of a roll plate model as the reference, the forming force of the roll plate model with different geometric dimensions can be reversed and then transformed into the forming force required for the production and design of a two-roll rolling machine. Finally, by comparing the experimental results with the simulation results, the accuracy of the previous results is verified, and the feasibility of the finite element simulation analysis is also evaluated.
【學位授予單位】：燕山大學
【學位級別】：碩士
【學位授予年份】：2015
【分類號】：TG306

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本文編號：1985757