| 摘要 |
The present invention provides a motor driven link press which enables working with a heavy press load and also enables a working cycle time to be improved even when a motor with a relatively low output power is used and which can be properly controlled easily. A motor driven link press comprises a link mechanism 1 that converts a rotating operation into a linear operation and a ram 6 that elevates and lowers for press working on the basis of this linear operation. The link mechanism 1 comprises a crank member 2 having a crank shaft 3 and an eccentric shaft portion 4 , a pivoting link 5 , a connecting rod 7 , and a restraining link 8 . The pivoting link 5 has a first to third connecting portions P 1 to P 3 and is connected to the eccentric shaft portion 4 of the crank member 2 using the connecting portion P 1 . The connecting rod 7 is connected to the second connecting portion P 2 and the ram 6 . The restraining link 8 is rotationally removably supported on a frame 9 and is connected to the connecting portion P 3 to restrain pivoting of the pivoting link 5 . A drive transmitting system 14 is provided to transmit driving effected by a motor 13 to the crank shaft 3 of the link mechanism 1 . The drive transmitting system can control rotation of the motor 13 to transmit driving effected by the motor 13 so that an elevating and lowering operations of the ram 6 can be controlled.
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