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    • 1. 发明专利
    • HIGH SPEED SHEAR DIVIDING ROLLED STEEL PLATE IN WIDTH DIRECTION
    • JP2001191216A
    • 2001-07-17
    • JP2000343594
    • 2000-11-10
    • SMS DEMAG AG
    • GRAFE HORSTMERZ JUERGEN
    • B21B15/00B23D25/02B23D25/08B23D25/12
    • PROBLEM TO BE SOLVED: To improve a high speed shear for cutting a steel plate so as to surely perform an exact cutting in case of fast steel plate speed and in case of minimum steel plate thickness. SOLUTION: This high speed shear is provided with a first cutter drum 1 having a comparatively large diameter and a second cutter drum 2 having a comparatively small diameter which are connected with a gear transmission by rotation and divides a rolled steel plate 10 in a width direction. The drums 1, 2 are fixed and supported at each of two supporting portions within a machine frame. The shear is provided with a means for guiding the steel plate 10 through a gap between the drums 1, 2 by straining the steel plate 10 in a longitudinal direction before and after the cutter drums 1, 2. When the steel plate 10 under tensile stress is carried through the shear, the steel plate 10 is supported by a transfer roller or energized by the transfer roller. The transfer roller lifts the steel plate 10 every time before the transfer roller passes a cutter 7 on a lower side and lowers the steel plate 10 before the transfer roller passes a cutter 8 on an upper side.