| 摘要 |
PROBLEM TO BE SOLVED: To reduce the vibration of a transfer feed bar accompanying with the vibration of a press. SOLUTION: When performing transfer working by a die mounted on a slide connected to the crank shaft of the press and moving vertically, the vibration of the transfer feed bar 8, which accompanies with the vibration of the press, of the press transfer feeder transferring a work among plural stations of the die by the transfer feed bar 8 to be driven two-dimensionally or three- dimensionally by a servomotor 7 while synchronizing with the rotation angle of the crank shaft, is suppressed. By converting the vibration component of the crank angle signal of the crank shaft accompanying with the vibration, into the speed signal of a crank angle, eliminating the vibration component after converting it into an original crank angle signal, integrating a deviation quantity between the crank angle signal after eliminating the vibration component and an actual crank angle signal, correcting the crank angle signal after eliminating the vibration component according to the integrated value of the deviation quantity, and synchronizing the servomotor 7 with the corrected crank angle signal, and the servomotor 7 is controlled. |
