Title:
PRESS BRAKE, AND PRESS BRAKE CONTROL METHOD
Document Type and Number:
WIPO Patent Application WO/2024/085076
Kind Code:
A1
Abstract:
A control device (NC device 10) controls a table raising and lowering mechanism (6) to bend sheet metal W to a provisional bending angle that is greater than a target bending angle. The control device calculates a first bending angle of the sheet metal (W) that has been bent to the provisional bending angle, on the basis of an angle of the sheet metal measured by angle sensors (21F and 21R). The control device unloads the sheet metal (W), calculates a second bending angle of the sheet metal (W), and calculates a springback amount. The control device calculates a lowering amount, taking into account the springback amount, for bending the sheet metal (W) to the target bending angle, and controls the table raising and lowering mechanism (6) to lower an upper table (1). When the sheet metal (W) has been bent to the target bending angle, the control device unloads the sheet metal (W) and calculates a final bending angle of the sheet metal (W) on the basis of the angle of the sheet metal (W).
Inventors:
AMANO KANEHIDE (JP)
UESUGI SATORU (JP)
SASAKI HIDEKI (JP)
UESUGI SATORU (JP)
SASAKI HIDEKI (JP)
Application Number:
PCT/JP2023/037146
Publication Date:
April 25, 2024
Filing Date:
October 13, 2023
Export Citation:
Assignee:
AMADA CO LTD (JP)
International Classes:
B21D5/02
Attorney, Agent or Firm:
MIYOSHI Hidekazu et al. (JP)
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