Experimental investigation of the influence of the different loading conditions on the new type precision bar blanking system

An experimental investigation was carried out to determine the influence of the different loading conditions on the blanked-billets cross-section quality and blanking time with a new precision blanking method. The loading rules are clearly explained as well as the loading sequence. Meanwhile, a new cross-section quality assessment method is proposed in accordance with the characteristics of the blanked-billets cross-section. Moreover, the tests adopt the ideal control curves: the frequency-time control curve with a linear decrement slope 1Hz/s and the radial displacement-time control curve with a linear increment slope 0.01mm/s. The experimental results indicate that the quality of the cross-section is in turn: two perpendicular-distributed hammers, four hammers, three hammers, single hammer, two symmetric-distributed hammers. The blanking time from short to long is in turn: four hammers, three hammers, two perpendicular-distributed hammers, single hammer and two symmetric-distributed hammers.