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讨论了1060铝合金曲面零件在电磁校形下的成形质量。根据曲面工件的外形轮廓,设计出一种匀压力线圈,其电磁场的分布与工件的各个位置相对应,对工件的各个位置都能提供电磁校形力,以提高工件的成形精度。试验结果表明,在电磁校形中,随着放电能量的增加,曲面零件的回弹逐渐减小;板料厚度越接近于趋肤深度,能量利用率越高,校形效果越好;在一次校形无法达到精度要求时,对工件进行多次放电,随着放电次数的增加,回弹逐渐减小。
The forming quality of 1060 aluminum alloy curved parts under electromagnetic shape is discussed. According to the profile of the surface workpiece, a uniform pressure coil is designed. The distribution of the electromagnetic field corresponds to each position of the workpiece, which can provide electromagnetic calibration force to various positions of the workpiece to improve the forming accuracy of the workpiece. The experimental results show that the rebound of curved parts decreases with the increase of discharge energy in EMM. The closer the sheet thickness to the skin depth, the higher the energy efficiency, When the shape can not meet the precision requirements, the workpiece is discharged several times. With the increase of discharge times, the rebound decreases gradually.