| 摘要 |
A cutting tool of the present invention includes a cutting insert and a holder having at a front end part thereof an insert pocket for attaching the cutting insert. The insert pocket includes a seating part including a seating face which is brought into contact with the lower surface of the cutting insert, and is inclined forward in a rotation direction of the holder as the seating face separates from the front end part of the holder; and a constraining part brought into contact with first and second side surfaces adjacent to each other among the side surface of the cutting insert. The constraining part includes a curved portion; a first constraining face which is connected to one end of the curved portion and extends perpendicularly with respect to the rotation axis of the holder as the first constraining face separates from the curved portion, or extends away from the front end part of the holder; and a second constraining face which is connected to the other end of the curved portion and extends toward the front end part of the holder in the direction away from the curved portion. A method of manufacturing a machined product using the cutting tool is provided.
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