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斜辊矫直作为管材生产的最后一道工序,为达到薄壁细管严苛的精度要求,最优矫直工艺参数的设定至关重要。为解决薄壁细管矫直的难点,以现有的十辊矫直机为基础,设计了十辊薄壁细管矫直的模型,并进行了工艺参数研究。利用有限元软件ABAQUS建立了薄壁细管材矫直的有限元模型,通过分析不同条件下矫直后管材的X、Y方向的直线偏差、径向偏差得出了适合薄壁细管的最佳压弯量及压扁量,以此拟合出公式。根据公式计算了两组不同情况下管材的工艺参数,通过仿真模拟及实验验证了公式的可靠性,为薄壁细管精密矫直机的开发制造提供了理论依据。
As the last process of pipe production, skew roller straightening is very important in order to meet the strict precision requirements of thin-walled thin tubes. In order to solve the difficult straightening thin-walled thin tube, based on the existing ten-roller straightening machine, the ten-thin thin-walled thin tube straightening model was designed and the process parameters were studied. The finite element model of thin thin tube is established by using the finite element software ABAQUS. The optimum deviation of the straight line in the X, Y direction and the radial deviation of the straightened tube under different conditions are obtained. Bending amount and crush amount, in order to fit the formula. According to the formula, the process parameters of two groups of pipe under different conditions were calculated. The reliability of the formula was verified by simulation and experiment, which provided a theoretical basis for the development and manufacture of thin-walled thin-tube precision straightening machine.