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来源：百度知道 编辑：UC知道 时间：2024/05/25 17:28:27
Shaping materials without removing any chips around a definite axisthrough or without heat is called bending.
When the load is removed, the material tries to retrieve its original form and the material bent expands backwards with some amount of stretching。
Many research conducted recently have shown the importance of spring-back in sheet metal industry, and studied how this permanent physical variation can be avoided. One common point of all these research is that they have dwelled on estimating or determining the amount of spring-back in advance, and accordingly, designing and later manufacturing dies based on this spring-back amount.
That is why some mathematical models are developed to predict the spring-back.
While some researchers have dealt, in order to minimize spring-back values, with bipartite functions of both die and material resulting in the ideal die or matrix measurements,others have brought forward all functions to act on spring-back
When the load is removed, the material tries to retrieve its original form and the material bent expands backwards with some amount of stretching。
Many research conducted recently have shown the importance of spring-back in sheet metal industry, and studied how this permanent physical variation can be avoided. One common point of all these research is that they have dwelled on estimating or determining the amount of spring-back in advance, and accordingly, designing and later manufacturing dies based on this spring-back amount.
That is why some mathematical models are developed to predict the spring-back.
While some researchers have dealt, in order to minimize spring-back values, with bipartite functions of both die and material resulting in the ideal die or matrix measurements,others have brought forward all functions to act on spring-back
整形材料没有消除任何芯片周围一定axisthrough或无热量被称为弯曲。
当负载删除，材料尝试检索其原来的形式和材料向后弯曲扩大一些数额伸展。
最近进行的许多研究已经表明的重要性回弹在钣金行业，并研究如何永久性身体变化是可以避免的。一个共同的点，所有这些研究的是，他们谈到估计或确定的金额回弹提前，因此，设计和制造模具后来在此基础上回弹量。
这就是为什么一些数学模型，开发预测回弹。
虽然一些研究人员已经处理，以尽量减少回弹的价值观，与二部的职能和物质两死导致理想的死亡或矩阵测量，其他人提出的所有功能行事回弹和确定如何最大限度地减少他们。其中最重要的问题in''V ''弯曲模是控制回弹。
众所周知，不同的春天的脚步就可能模具设计和方便的材料。结合各种材料和工艺，因此难以取得预期的回弹。
材料参数，如弹性，屈服应力，硬化财产和工艺参数，如载荷应用，厚度的金属板，模具角度，半径和冲压模具的差距影响回弹在一个复杂的方式。
这些参数是在图。 1 。在这项研究中，相关参数弯曲的表示：冲压半径R ，模具隅半径路，模具差距钨材料厚度吨，打孔深度h （共惠普和他）和弯曲角度AB公司之间的夹角2英尺一个弯[ 2 ] 。
在所进行的研究谈等。 [ 2 ] ，一个简单的方法，提出防止回弹。在此方法中，钣金暴露了一套装货和卸货过程。每个弯曲角度及相应的回弹值进行测量，并输出信号是电脑。因此，适当的新闻深度冲床，相当于过度弯曲，有决心。