Adopt Delta Servo motor control, movement is accurate, torsion is strong, bending coefficient database is exquisite, one-step molding.

折弯采用台达伺服电机控制，动作精准，扭力强大，精细折弯系数数据库，折弯一次成型。

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The computation expression for the strain neutral layer of stress and plastic bending was introduced and so the thinning coefficient computing formula of sheet metal was deduced.

给出了板料弯曲的应力应变中性层和纯弯曲应变中性层的计算公式，并推出板料弯曲时的变薄系数计算公式。

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The results show that: the springback Angle of bent tube increases with the bending Angle, the gap between mandrel and tube, and the hardening coefficient, but decreases with the hardenability value.

结果表明：回弹角随弯曲角、芯棒与管壁间隙及材料硬化系数的增大而增大，随材料硬化指数的增大而减小。

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