大变形法兰轴镦锻成形数值分析
Numerical Analysis of Upsetting Process for Large Deformation Flange Shaft
程俊伟， 冯宪章， 刘长红， 李思忠
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作者单位：郑州航空工业管理学院 机电工程学院，河南 郑州 450015
中文关键字：法兰轴； 镦粗； 大变形； 数值分析
英文关键字：flange shaft； upsetting； large forming； numerical analysis
中文摘要：分析了某型号法兰轴的形状尺寸特点，制定了预锻、终锻两步成形工艺方案。对预锻成形过程、终锻成形过程进行了数值分析，指出了终锻时金属充不满型腔的原因是该类成形金属的流动规律及摩擦共同影响的结果，并给出了正确的解决方案；通过数值分析，该方案是可行的。敞开式终锻模可有效避免终锻成形力急剧增加，同时也降低了下料难度。
英文摘要：The characters of the shape and dimensions of some vehicle hub axle was analyzed, and the forging scheme was designed, which included pre-forging and end-forging. The simulation results show that the metal can not fill the end die, the reason is the influence of metal flowing and the friction. At last, the feasible scheme is given and the simulation result shows it is right. The open end-die can limit the force to increase rapidly, and also can reduce the blanking difficulty.