| 摘要 |
To provide a punch press which can realize the high hit rate and the energy saving in the punch drive. A plate material transfer control means 32 and a ram axis control means 33 controlled synchronously are provided. The plate material is started to transfer when a punch tool 6 reaches a pullout height HH2 after punching and it is arranged to come to a height HH1 which is likely to contact with the plate material when completing transferring the plate material. The ram axis control means 33 rotates a servomotor 19 in one direction. Moreover, the ram axis control means 33 controls in a motor speed pattern VP based on the distance of transferring the plate material after the punch tool 6 goes up from the pullout height HH2 and the servomotor 19 is prevented from stopping as possible. The motor speed pattern VP is made to be a trapezoid pattern that the acceleration is constant.
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