SHEAR SPEED SETTING DEVICE, ROLLING CUT SHEAR, SHEAR SPEED SETTING METHOD, AND STEEL PLATE SHEARING METHOD

摘要

PROBLEM TO BE SOLVED: To surely secure a time of transporting a steel plate without decreasing shearing efficiency of a rolling cut shear.;SOLUTION: A shear speed setting device 5 sets a shear speed of a rolling cut shear that shears a steel plate when a crank that suspends an upper blade moves around on a predetermined movement circumference, and the upper blade oscillates in a vertical plane above a lower blade with the rotation. In the shear speed setter 5, an in-shearing movement angle specification unit 571 specifies a movement angle on a crank movement circumference from when the upper blade comes into contact with the steel plate to when it is separated therefrom, on the basis of a thickness of the steel plate. A shear speed optimization processing unit 573 sets a shear speed during steel plate sharing and a shear speed during steel plate transportation so that a time of transporting a steel plate is included within a regulated time previously specified as a time when the crank moves around once on the movement circumference, on the basis of the specified movement angle, a steel plate transportation time required for transporting the steel plate, and an acceleration/deceleration rate of the shear speed.;COPYRIGHT: (C)2015,JPO&INPIT