Improvement on straightness of metal bar based on straightening stroke-deflection model
Improvement on straightness of metal bar based on straightening stroke-deflection model
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DOI：
10.1007/s11431-009-0212-3
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发表时间：
2009-06
期刊：
影响因子：
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通讯作者：
Hong Lu;He Ling;J. Leopold;Xiao Zhang;Changqiao Guo
中科院分区：
文献类型：
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作者：
Hong Lu;He Ling;J. Leopold;Xiao Zhang;Changqiao Guo
矫直工艺是提高金属棒料直线度的重要手段之一。基于数学方法、弯曲实验和数值模拟，提出了一种新的矫直行程预测方法。根据弹塑性理论建立的压力矫直过程的载荷-行程数学模型，进行了实验和数值模拟。以直线导轨为例，通过弯曲实验结果与有限元仿真数据的对比和综合，建立了以矫直行程预测为重点的行程-挠度模型。在此基础上，提出了基于精密矫直行程-挠度模型的矫直行程预测公式。该行程预测公式精度高，可方便地应用于高直度金属棒材加工过程和自动校直机的校直行程预测。
The straightening technics is one of important means to improve the straightness of metal bar. A novel way of predicting the straightening stroke is proposed based on mathematical methods and bending experimental and numerical simulation. The experimental and numerical simulation is conducted by following the mathematical load-stroke model of press straightening process under the elastic-plastic theory. For the linear guide rails, as an example, the stroke-deflection model focusing on the straightening stroke prediction can be achieved by contrasting and integrating the bending experimental results and finite element methods (FEM) simulation data. And then the formula for predicting the straightening stroke is presented based on the precise straightening stroke-deflection model. The stroke prediction formula with high precision can be applied to the straightening stroke prediction in the high straightness metal bar manufacturing process and automatic straightening machine conveniently.