Servo drive system and continuous working system of press machine
A servo drive system of a press machine uses servo motors (30a,30b) as driving sources of a ram. The servo motors (30a,30b) are opposed to each other at opposite ends of an operation shaft which vertically moves a ram (22), and the servo motors (30a,30b) composite and use torques based on the same s...
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| creator | KURIYAMA, HARUHIKO OTAKE, TOSHIAKI SEKIYAMA, TOKUZO NAITO, KINSHIRO |
| description | A servo drive system of a press machine uses servo motors (30a,30b) as driving sources of a ram. The servo motors (30a,30b) are opposed to each other at opposite ends of an operation shaft which vertically moves a ram (22), and the servo motors (30a,30b) composite and use torques based on the same speed-torque characteristics. Necessary ram pressure can be generated without utilizing inertia of a mechanism, and the system employs a pair of servo motors (30a,30b) in which if a load is received from a work during a lowering operation of the ram (22), motor speed is reduced according to the load, thereby reducing the lowering speed of the ram (22). The pair of servo motors (30a,30b) are integrally operated, thereby directly driving the operation shaft. |
| format | Patent |
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The servo motors (30a,30b) are opposed to each other at opposite ends of an operation shaft which vertically moves a ram (22), and the servo motors (30a,30b) composite and use torques based on the same speed-torque characteristics. Necessary ram pressure can be generated without utilizing inertia of a mechanism, and the system employs a pair of servo motors (30a,30b) in which if a load is received from a work during a lowering operation of the ram (22), motor speed is reduced according to the load, thereby reducing the lowering speed of the ram (22). 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| language | eng ; fre ; ger |
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| subjects | CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORSOR DYNAMO-ELECTRIC CONVERTERS CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS CONVERSION OR DISTRIBUTION OF ELECTRIC POWER ELECTRICITY GENERATION MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVINGMATERIAL PERFORMING OPERATIONS PRESSES PRESSES IN GENERAL PUNCHING METAL TRANSPORTING WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS ORPROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL |
| title | Servo drive system and continuous working system of press machine |
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