| 摘要 |
An end mill that realizes prevention of environmental pollution. End mill (1) has aperture (5a) resulting from opening forming along helical flute (4). The aperture (5a) is so structured as to communicate via air suction channel (5) with an opening of the rear end face of shank (2). Accordingly, by air suction through the air suction channel (5), chips generated at cutting processing can be forcibly suctioned from the aperture (5a), and the suctioned chips can be discharged outside from the opening of the rear end face of shank (2). As a result, as compared with conventional products, the use of cutting liquid for eliminating of chips can be suppressed (or rendered unnecessary) to thereby attain prevention of environmental pollution.
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