Abstract: There is provided a press brake that improves bending accuracy of a partial bending method. The press brake includes: a conveying mechanism that intermittently conveys a workpiece; a die; a punch; a crowning mechanism; a bending amount measuring device; and a control device. The control device presses an end portion of the workpiece in a conveying direction by the punch and conveys the workpiece by the conveying mechanism until the pressed portion enters into a measurement range of the bending amount measuring device. The control device drives the crowning mechanism so as to correct a crowning amount in accordance with a difference between a middle bending amount and an end bending amount measured by the bending amount measuring device.
Type:
Grant
Filed:
December 28, 2021
Date of Patent:
February 4, 2025
Assignees:
KAWASAKI JOKOGYO KABUSXIXI KAISMA, LVD COMPANY NV
Inventors:
Hideki Okada, Wataru Hirabayashi, Kristof Tyvaert, Alexander Cornelus