| 摘要 |
PURPOSE:To facilitate the change of the angles for starting and ending releasing of feed rolls mounted to a press by reading out said angles from a storage means and matching the timings for detaching the rolls from a blank material to respective dies. CONSTITUTION:The angle theta4 and angle theta5 for starting and ending releasing of feed rolls 2, 3 for a blank material 4 which are driven in synchronization with a press machine 1 are stored respectively in a storage device with respect to plural dies. The angle theta4 and angle theta5 corresponding to the dies 5, 8 mounted to the press machine 1 are read out of the storage means. The timings for starting and ending the releasing of the rolls 2, 3 are calculated in accordance with the angle theta4, the angle theta5 and the number of press strokes. The rolls 2, 3 are detached from the material 4 during the time from the timing for starting the releasing to the timing for ending the same. The angles for starting and ending the releasing are easily changed by the above-mentioned method. |
