| 摘要 |
PURPOSE: A structure of a cutting tool is provided to recycle a primary part when a secondary part is damaged because the secondary part is detachable from the primary part. CONSTITUTION: A structure of a cutting tool includes a primary part and a secondary part. The primary part(100) is clamped by a chuck of a milling machine, drilling machine, or lathe, and has a female thread(110a) on one end thereof. The secondary part(200) includes a cutting unit(230) for cutting a work piece, and a connecting part(220) in which a first thread(220a) connected to the female thread of the primary part. The connecting part of the secondary part is made of steel material, and the rest is made of cemented alloy. A female thread(250) of opposite direction to the connecting part is formed through the connecting part along the center axis of the secondary part.
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