薄板压延中在压边圈叠加振动的模拟试验
Overlapping Oscillation on Blank Holder for Improving Friction during Deep Drawing
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摘要: 应用模拟的方法在薄带摩擦试验中于正压力上叠加低频振动,模拟薄板在叠加振动的压边圈下的摩擦状态,系统地研究了振幅、频率、正压力、拉速、表面与摩擦力的关系.试验表明,在一定的条件下,低频振动叠加是可以改善薄板成形变形区的摩擦状况,降低摩擦力的.Abstract: A low frequency oscillation is overlapped in strip drawing test, which simulates the friction. state of sheet between blank holder and die with oscillation. The influence of amplitude, frequency, drawing speed, normal pressure, surface topography on friction have been given through the test It shows, overlapping low frequency oscillation on blank holder in sheet metal forming is helpful under some conditions.