METHOD FOR MANUFACTURING A COMMUTATOR USING A BRAZING AND SOLDERING PROCESS

摘要

A commutator (10) comprising a plurality of commutator bars (12) formed from a graphite structure (30) and a metal sheet (20) having soldered to the graphite structure (30) includes a brazing process followed by a soldering process. The brazing process includes applying a brazing material the graphite structure (30) and brazing at an elevated temperature to form a brazing layer (40). The soldering process includes applying a solder material to the brazing layer (40), placing the metal sheet (20) on the solder material, and soldering to form a solder layer (50) affixing the metal sheet (20) to the graphite structure (30). A plurality of grooves (70) are cut in the graphite structure (30) and the metal sheet (20) to form the commutator bars (12) arranged in an intermittent ring or circle.

主权项

1. A method for manufacturing a commutator for an electric motor, comprising:
applying a brazing material to a surface of a graphite structure; brazing the brazing material and the graphite structure to form a brazing layer on the surface of the graphite structure; soldering a metal sheet to the brazing layer; forming a plurality of grooves in the graphite structure and metal sheet, such that the graphite and structure and metal sheet form a plurality of commutator bars electrically insulated from each other.