What is a hydraulic expandable regrinding shaft?
Views : 1974
Author : Summer Xia
Update time : 2021-03-26 10:54:48
The general regrinding shaft is integral. In order to put the slitting tooling on the regrinding shaft one by one, the outer diameter of the regrinding shaft should always be 0.02 ~ 0.04 mm smaller than the inner diameter of the tooling, and this gap will cause the eccentricity of the slitter knife, bonded stripper ring and knife shaft, resulting in the uneven overlap of the slitter knives and the uneven compression of the sheet by the outer circle of bonded stripper rings, and finally affect the quality of the product. In order to eliminate this gap, some slitting machine manufacturers have designed and manufactured hydraulic expandable regrinding shafts to completely eliminate the gaps between shaft and knife ID.
The idea of a hydraulic expandable regrinding shaft is very good, but the problem is that the slitting machine knife shaft is not expandable, and the so-called eccentricity problem cannot be completely solved. If you want to solve it completely, the slitting machine's knife shaft must also be expandable, and the cost will be very huge. In the current market, some precision slitting machine manufacturers use expandable knife shafts. However, in actual use, the expanded knife shaft will have a negative impact on the runout of the knife surface and affect the quality of the strips.
The idea of a hydraulic expandable regrinding shaft is very good, but the problem is that the slitting machine knife shaft is not expandable, and the so-called eccentricity problem cannot be completely solved. If you want to solve it completely, the slitting machine's knife shaft must also be expandable, and the cost will be very huge. In the current market, some precision slitting machine manufacturers use expandable knife shafts. However, in actual use, the expanded knife shaft will have a negative impact on the runout of the knife surface and affect the quality of the strips.
