Die cushion device and method of controlling the die cushion device

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United States of America Patent

PATENT NO 10710138
APP PUB NO 20170182539A1
SERIAL NO

15384478

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Importance

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Abstract

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A die cushion device includes a hydraulic cylinder that supports a cushion pad and generates die cushion force when the slide of the press machine descends, a first hydraulic circuit that is connected to a cap side hydraulic chamber of the hydraulic cylinder, and a second hydraulic circuit that is connected to a rod side hydraulic chamber. Before die cushion force control starts, the second hydraulic circuit of the die cushion device causes hydraulic oil in the rod side hydraulic chamber to be prevented from flowing out, and the first hydraulic circuit of the die cushion device causes the cap side hydraulic chamber to be pressurized.

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Patent Owner(s)

Patent OwnerAddress
AIDA ENGINEERING LTD2-10 OHYAMA-CHO SAGAMIHARA-SHI KANAGAWA

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Makabe, Junji Kanagawa, JP 6 22

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