| 摘要 |
PROBLEM TO BE SOLVED: To provide a small size press machine capable of efficiently working necessary parts around an inner part which disturbs smooth work in a conventional method by entering a die part into the inner part of a work, capable of working on single plane by providing a plurality of various cutting edges to reduce transfer loss, capable of easily taking out scrap material and performing confirmation work due to good visibility of a working part and the cutting edge by forming a die base inclined, and saving installation space by providing above or side part of another press machine. SOLUTION: This small press machine for working circumference of holes formed inside of a plate material is composed of the die part 2 of size to enter into the hole inside of the plate material, and a driving part 5 drawing down an upper edge 2d of the cutting edge of the die and pressing. COPYRIGHT: (C)2004,JPO
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