| 摘要 |
In order to make holes with different spacings between them, a punching tool is provided with punching dies on its circumference and interacts with an impression cylinder. Between two punching operations, either of the punching dies and the impression cylinder is driven, at times, at a circumferential speed that is greater or smaller than the movement speed of the material web that is to be punched or is stopped briefly and, until the next punching operation, brought once again to a circumferential speed that corresponds to the movement speed of the material web that is to be punched.
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