基于DEFORM的半轴套管复合鐓挤模拟分析

Simulation Analysis on Composite Upsetting Extrusion for Half Shaft Bushing Based on DEFORM

汽车半轴套管一般采用优质碳素结构钢和合金结构钢热轧,无缝钢管由机加工制造。对于形状简单凸缘直径不大的套管,机加工难度不大,但是对于形状复杂,内孔异形的套管采用机加工成形浪费材料或者根本无法加工。采用挤压成形有诸多优点,如节省材料,提高效率,工件性能由于塑性强化而提高等。设计了一种半轴套管的复合鐓挤成形工艺,模拟仿真的结果很理想,工件尺寸达到要求,凸凹模应力也远低于许用应力。

Automotive half shaft casing is generally manufactured using high quality carbon structural steel and alloy structural steel hot-rolled seamless steel tube to machin. For simple shape flange diameter small casing, machining difficulty is not great, but the complex shape, the inner hole of the sleeve shaped by machining forming wastes materials or cannot process. The extrusion forming has many advantages, such as saving material, improving efficiency and workpiece performance due to plasticity strengthening and improving. A composite upsetting extrusion forming process for a half shaft sleeve was designed in this paper. The simulation results are very ideal, the workpiece size can meet the requirements, the convex and concave die stress is far lower than the allowable stress.