Basket-type rotor production method and basket-type rotor

A squirrel-cage rotor, comprising:

• a rotor core comprising:
• a plurality of rotor core sheets that are laminated in an axial direction of the squirrel-cage rotor;
• and
• a rotor slot formed along a radially outer part of the rotor core;
• and
• a conductor formed at a radially inner part of the rotor slot,
• wherein a surface of the conductor, which is exposed on a radially outer side, includes a plurality of projections from the conductor formed at positions along a direction of the lamination surfaces of the plurality of rotor core sheets and separated from each other along the axial direction of the squirrel-cage rotor, and
• the lamination surfaces are between the plurality of rotor core sheets.

A squirrel-cage rotor, comprising:

• a rotor core comprising:
• a plurality of rotor core sheets that are laminated in an axial direction of the squirrel-cage rotor;
• and
• a rotor slot formed along a radially outer part of the rotor core;
• and
• a conductor formed at a radially inner part of the rotor slot,
• wherein a surface of the conductor, which is exposed on a radially outer side, comprises:
• first surfaces including positions along lamination surfaces of the plurality of rotor core sheets,
• second surfaces each arranged between a different pair of first surfaces, and having different surface roughness from the first surfaces, and
• the first surfaces and the second surfaces being arranged alternately along the axial direction.