| 摘要 |
A power index punch for cutting notches in the fore edge of a book is disclosed in one aspect of the present invention as including a cutting die having a cutting edge forming a substantially closed channel. A vacuum mechanism is used to create a vacuum within the closed channel to remove cuttings produced by the cutting die. A cutting plate is adapted to contact the cutting die to provide a surface for the cutting die to cut against. Both the cutting die and the cutting plate are openly visible to an operator of the index punch to facilitate manual adjustment of the cutting die with respect to a material being cut.
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