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为了进一步研究磁场强度对线锯切割性能的影响,根据锯丝和磁性磨粒的磁化曲线,研究了锯丝外部磁场强度和磁性磨粒所受磁力的关系.搭建了磁性磨粒吸附观测实验平台,验证了磁力对锯丝周围的磁性磨粒产生的分区吸附效果.结合磁系与线锯切割机床,搭建了磁感应游离磨粒线锯切割实验平台,并进行了不同磁场强度下的切割对比实验.研究结果表明:在0.00~1.07×105 A/m磁场强度范围内,切缝宽度和崩边宽度随外部磁场强度的增强而减小,进一步增加磁场强度之后,切缝宽度和崩边宽度增大;磁感应游离磨粒线锯切割中的最优外部匀强磁场强度为1.07×105 A/m左右.
In order to further study the influence of magnetic field strength on the cutting performance of wire saws, the relationship between the external magnetic field strength of wire and the magnetic force of magnetic abrasive particles was studied according to the magnetization curves of saw wire and magnetic abrasive grains. , Verifying the effect of magnetic force on the partition absorption of the magnetic abrasive particles around the saw wire.Combined with the magnetic system and the wire saw cutting machine tool, a magnetic induction free abrasive wire saw cutting experimental platform was set up, and the cutting comparison experiment under different magnetic field intensities The results show that the kerf width and chipping width decrease with the increase of the external magnetic field in the range of 0.00 ~ 1.07 × 105 A / m, the width of the kerf and the chipping width increase after the magnetic field strength is further increased The optimal external magnetic field intensity in the magnetic induction free abrasive wire saw cutting is about 1.07 × 105 A / m.