Cutting tool and method for manufacturing machined product

A cutting tool, comprising:

• a body which extends from a front end toward a rear end along a rotation axis and comprises a pocket located on a side of the front end;
• a plurality of cutting inserts, at an outer periphery of the body, configured to perform a machining process on a workpiece;
• a cutting part which is located in the pocket and comprises a cutting edge located on the side of the front end;
• and
• an urging means located between the body and the cutting part, and configured to apply an urging force to the cutting part so that a position of the cutting edge not in contact with a workpiece comes closer to the rear end than a position of the cutting edge in contact with the workpiece, wherein
• in a radial direction of the rotation axis, the cutting part is located closer to a center of the cutting tool than the plurality of cutting inserts is to the center of the cutting tool, and configured to perform a further machining process on the workpiece.

A method for manufacturing a machined product, the method comprising:

• rotating a cutting tool;
• bringing the cutting tool into contact with a workpiece;
• and
• moving the cutting tool away from the workpiece, wherein
• the cutting tool comprises
• a body which extends from a front end toward a rear end along a rotation axis and comprises a pocket located on a side of the front end;
• a plurality of cutting inserts, at an outer periphery of the body, configured to perform a machining process on the workpiece;
• a cutting part which is located in the pocket and comprises a cutting edge located on the side of the front end;
• and
• an elastic body which is located between the body and the cutting part and configured to apply an urging force in a direction toward the rear end to the cutting part,
• the pocket comprises a first seating surface directed to a front side in a rotation direction of the rotation axis,
• the cutting part comprises a rear surface which is located on a rear side in the rotation direction of the rotation axis and which is in contact with the first seating surface,
• the elastic body is in contact with the first seating surface and the rear surface,
• the rear surface is slidable toward the rear end, and
• in a radial direction of the rotation axis, the cutting part is located closer to a center of the cutting tool than the plurality of cutting inserts is to the center of the cutting tool, and configured to perform a further machining process on the workpiece.