Title:
DIE-CUSHION CONTROL DEVICE, DIE-CUSHION CONTROL METHOD, AND DIE-CUSHION CONTROL PROGRAM
Document Type and Number:
WIPO Patent Application WO/2022/254708
Kind Code:
A1
Abstract:
A die-cushion control device (200A) that controls a die cushion mechanism (3) includes: a pressure command generating unit (50) that outputs a first pressure command (P1a) relating to a pressure or force to be generated between the die cushion mechanism and a slide (1); a deviation estimation unit (70) that obtains the generated pressure or force as a detected pressure (P3a), estimates a pressure deviation, which is the difference between the pressure or force in the first pressure command and the detected pressure, the difference occurring when the die cushion mechanism is controlled in accordance with the first pressure command, on the basis of the translational acceleration of the slide, control parameters of the die cushion mechanism, and the amount of movement of the die cushion per rotation of a servo motor, and outputs the pressure deviation as a correction pressure command (71); a pressure command correcting unit (80A) that calculates a second pressure command (P2a) by correcting the first pressure command with the correction pressure command; and a pressure control unit (30) that calculates a speed command for making the detected pressure follow the second pressure command and outputs the speed command to a speed control unit (23).
Inventors:
UEDA KOICHIRO (JP)
MAHARA KOJI (JP)
MAHARA KOJI (JP)
Application Number:
PCT/JP2021/021414
Publication Date:
December 08, 2022
Filing Date:
June 04, 2021
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP (JP)
International Classes:
B21D24/02; B30B15/02
Domestic Patent References:
| WO2009078237A1 | 2009-06-25 |
Foreign References:
| JP2006130524A | 2006-05-25 | |||
| JP2007000905A | 2007-01-11 | |||
| JP2010188363A | 2010-09-02 | |||
| JP2007301599A | 2007-11-22 |
Attorney, Agent or Firm:
TAKAMURA, Jun (JP)
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