| 摘要 |
PURPOSE:To facilitate the maintenance of a press and to improve economy, by reading out the stop angle of a press in the stage of resetting a power source, comparing the same with a set angle, and enabling the confirmation whether the pess is ready to operate or not. CONSTITUTION:A detector 1 which outputs a BCD code signal and a timing signal at the respective angles of the spindle of a press is used, and the latched BCD code signal is stored in a memory 6. The angle in the memory 6' when the press stops is selected with a data selector circuit 3 in the stage of resuming the operation by a power source resetting signal and is compared with the signal of the BCD codes stored in the memory 6 and the plural set angles and if the same is between the angles regulated by the set angle, a signal is outputted. When the rotating speed of the machine changes, a check operation is made and the timing angle for stopping is calculated in a calculation section 5. The angle is compared with the calculated angle and a coincidence signal is outputted. |
