工艺参数对管材绕弯成形的影响分析

The Analysis for the Influence of Process Parametersm on Rotary-Draw Tube Bending Forming

管材数控绕弯精确成形技术是管材生产的重要手段,也是多因素耦合交互作用的复杂力学过程,加工过程中的工艺参数决定了产生截面畸变、壁厚变化等工艺问题的大小,不合理的工艺参数会影响管材的成形精度和生产效率。基于ANSYS/LS-DYNA进行管材绕弯成形过程的有限元数值模拟,得到工艺参数对成形问题的影响规律,通过与理论解和实验结果的对比,证明了有限元仿真过程的正确性,为生产实际及后续工艺参数的优化提供了可靠的技术依据。

NC rotary-draw tube bending is a very important way for tube production, also is a complex mechanical process for the coupling interaction of multiple factors, and process parameters in machining process determines the problem such as the cross-section distortion, wall thickness changing and many other technical problems, and also unreasonable process parameters will influence the material forming accuracy and production efficiency. The present research builds an FEM simulation method under ANSYS/LS-DYNA environment, getting the influence rule of the process parameters on the forming problem, and the results of FEM are compared with the theoretical solution and experimental results in the literature, which proves the correctness of the FEM simulation method, and provides a reliable technical basis for the actual production and subsequent optimization of the process parameters.