基于Vague集的强力旋压工艺参数优化

Optimization on power spinning process parameters based on Vague set

在ABAQUS有限元软件中进行30Cr3钢的强力旋压仿真试验,将Vague集引入正交试验进行工艺参数优化,选择旋轮工作角、旋轮直径、旋轮工作圆弧半径、进给比、轴向错距、芯模转速作为优化工艺参数,设计6水平5因素的正交试验,以旋压件的回弹量与最大残余应力作为评价指标,得到最优的工艺参数组合以及各工艺参数对评价指标的影响顺序。结果表明:旋轮工作角为25°、旋轮直径为Φ185 mm、旋轮工作圆弧半径为9.5 mm、进给比为0.5 mm·r^-1、轴向错距为2 mm、芯模转速为60 r·min^-1时,旋压件的成形质量较高;各工艺因素对旋压件成形质量的影响顺序为:进给比>旋轮工作角>旋轮直径>旋轮工作圆弧半径>轴向错距>芯模转速。对仿真结果进行试验验证,相对误差小于7%,证明仿真结果具有良好的可靠性,可对实际生产提供理论指导。

The power spinning simulation test of 30 Cr3 steel was conducted by finite element software ABAQUS,and the process parameters were optimized by introducing Vague set the orthogonal test.Then,taking roller working angle、roller diameter、roller working arc radius,feeding ratio,axial offset,mandrel rotate speed were selected as the optimized process parameters,the orthogonal test of six levels and five factors was designed,and taking the springback amount and the maximum residual stress of spinning part as the evaluation indexes,the optimal combination of process parameters and the influence order of various process parameters on the evaluation indexes were obtained.The results show that the forming quality of spinning part is higher with the roller working angle of 25°,the roller diameter of 185 mm,the roller working arc radius of 9.5 mm,the feeding ratio of 0.5 mm·r^-1,the axial offset of 2 mm and the mandrel rotate speed of 60 r·min^-1,and the influence order of various process parameters on the forming quality of spinning part is feeding ratio>roller working angle>roller diameter>roll working arc radius>axial offset>mandrel rotate speed.In addition,the simulation results were tested and verified,and the relative error was less than 7%.Thus,it is proved that the simulation results have good reliability and provide theoretical guidance for practical production.