| 摘要 |
PROBLEM TO BE SOLVED: To provide a press machine capable of constituting a hydraulic control unit for controlling and operating a plurality of press units at a low cost, and capable of achieving energy-saving and also reducing operation costs. SOLUTION: The press machine 1 is used for controlling and operating a plurality of press units 2 by one hydraulic control unit 4. The press unit 2 has a servo valve 3. The hydraulic control unit 4 has a pump 9 for discharging hydraulic oil and an accumulator 6 for storing the hydraulic oil. Either of the press unit 2 or the hydraulic control unit 4 has a selector valve 5 for alternatively selecting the hydraulic oil of the pump 9 or the hydraulic oil of the accumulator 6 to supply it to the press units 2, respectively. COPYRIGHT: (C)2009,JPO&INPIT
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