Holder, cutting tool, method for manufacturing machined product, and method for collecting data

A cutting tool, comprising a holder and an insert, wherein:

• the holder comprises:
• a base having a bar shape extended along a central axis from a first end toward a second end, and comprising
• a metal member comprising a pocket that is configured to receive the insert comprising a cutting edge, and
• a first resin located closer to the second end than the metal member;
• an antenna covered with the first resin;
• a sensor which is located closer to the pocket than the antenna, is connected by wiring to the antenna, and is configured to detect a state of the base;
• and
• a second resin having a ring shape, which is located between the metal member and the first resin, and surrounds the antenna in a perspective view from a side of the second end;
• and
• the insert is located in the pocket.

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

• rotating a workpiece;
• bringing a cutting tool into contact with the workpiece being rotated;
• and
• moving the cutting tool away from the workpiece, wherein
• the cutting tool comprises a holder and an insert,
• the holder comprises:
• a base having a bar shape extended along a central axis from a first end toward a second end, and comprising
• a metal member comprising a pocket that is configured to receive the insert comprising a cutting edge, and
• a first resin located closer to the second end than the metal member,
• an antenna covered with the first resin,
• a sensor which is located closer to the pocket than the antenna, is connected by wiring to the antenna, and is configured to detect a state of the base, and
• a second resin having a ring shape, which is located between the metal member and the first resin, and surrounds the antenna in a perspective view from a side of the second end, and
• the insert is located in the pocket.