Patent attributes
The object is to provide a method of manufacturing a sliding contact which has a high yield of manufacturing sliding contacts and can positively make smooth the tip portion surface of a finger of a brush of a sliding contact. According to the invention, in a method of manufacturing a sliding contact having a metal brush, the tip portion of a finger 12a′ of a sliding contact piece 10′ is melted and thereafter the tip portion is solidified in a gas, whereby the surface of the tip portion is made smooth. For example, when a sliding contact is manufactured by blanking a metal sheet material, the tip portion of the finger 12a′ of the brush 12′ of the sliding contact piece 10′ which is obtained by blanking is irradiated with a laser beam, whereby the tip portion is heated and melted. Then, a sharp portion and a burr which exist before melting disappear. When the tip portion of the finger 12a′ is solidified in a gas after melting, a sliding contact having a brush provided with a finger whose tip portion surface is a smooth curved surface is manufactured.
