DIE CUSHION DEVICE FOR PRESS MACHINE
A die cushion device includes: a cushion pad which is located below a blank holder and is movable up and down while being synchronized with the blank holder; a linear driving device which drives a brake member along a predetermined line and regenerates energy from the linear movement of the brake me...
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Main Authors | , |
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Format | Patent |
Language | English |
Published |
14.04.2011
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Subjects | |
Online Access | Get full text |
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Summary: | A die cushion device includes: a cushion pad which is located below a blank holder and is movable up and down while being synchronized with the blank holder; a linear driving device which drives a brake member along a predetermined line and regenerates energy from the linear movement of the brake member by combination of a servo motor and a conversion mechanism; and a hydraulic speed change device which transfers the speed of the cushion pad to the brake member via the pressure of hydraulic fluid while increasing the speed and transfers the speed of the brake member to the cushion pad via the pressure of the enclosed hydraulic fluid while decreasing the speed. |
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Bibliography: | Application Number: US20100903930 |