APPARATUS FOR CONTROLLING DIE CUSHION MECHANISM

PROBLEM TO BE SOLVED: To provide an apparatus for controlling a die cushion mechanism, which apparatus can carry out a quick and precise force control operation. SOLUTION: The control apparatus 10 for controlling the force generated by the die cushion mechanism 50 utilizes the repetition of the same...

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Bibliographic Details
Main Authors OKITA HAJIME, SONODA NAOTO, TOYOSAWA YUKIO, IWASHITA HEISUKE
Format Patent
LanguageEnglish
Published 08.06.2006
Subjects
MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVINGMATERIAL
PERFORMING OPERATIONS
PUNCHING METAL
TRANSPORTING
WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS ORPROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL
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Summary:PROBLEM TO BE SOLVED: To provide an apparatus for controlling a die cushion mechanism, which apparatus can carry out a quick and precise force control operation. SOLUTION: The control apparatus 10 for controlling the force generated by the die cushion mechanism 50 utilizes the repetition of the same press work cycle. A compensating portion 203 compensates respective deviations in the next press work cycle based on the time series deviation in a press work cycle. By repeating such an operation, the deviation between the detected value of the force and the command value of the force converges to zero. As a result, the deviation can be made smaller than that in a conventional feedback control operation, and a quick response for the variation of the command value can be obtained. COPYRIGHT: (C)2006,JPO&NCIPI
Bibliography:Application Number: JP20040337472