Ring-shaped band saw blade manufacturing method and manufacturing apparatus

A manufacturing apparatus of a ring-shaped band saw blade for manufacturing the ring-shaped band saw blade including tips of teeth to which hard cutting tips are joined, the manufacturing apparatus comprising:

• a rotatory moving section that provides rotatory movement of the ring-shaped band saw blade including a body part having a band shape and a tooth part including the tips of teeth formed on one side part of the body part;
• a surface polishing section that polishes an inner surface and an outer surface of the body part in the ring-shaped band saw blade while the rotatory moving section provides rotary movement of the ring-shaped saw blade;
• an end face polishing section that polishes an end face of the body part on a side opposite to the tooth part in the ring-shaped band saw blade while the rotatory moving section provides rotary movement of the ring-shaped saw blade, wherein the polished inner surface, the polished outer surface, and the polished end face of the body part form positional references;
• and
• a tip joining apparatus configured to position the ring-shaped band saw blade by use of one of the positional references, join a cutting tip to one or more tips of the tips of teeth by welding, and polish the joined cutting tip to form a tooth tip shape.