METHOD FOR MANUFACTURING A BRAKE DISC, SUPPORT BELL FOR A BRAKE DISC AND BRAKE DISC

摘要

A method for manufacturing a composite brake disc (1), comprising shaping a bell (2) through deep-drawing of a metal sheet (20), forming at least one groove (22) in a surface of a bottom portion (24) of the metal sheet (20) and, then, pushing the bottom portion (24) relative to an outer portion (25) in a retro-forming direction (23) opposite the drawing direction (20), connecting, a brake band (3) to the bell (2).

主权项

1. Method for manufacturing a composite brake disc, the method comprising the steps of:
shaping a bell in the form of a cup with a coupling portion, a tubular side wall and a bottom wall transversal to the side wall through deep-drawing of a metal sheet, in which, during deep-drawing, a bottom portion of the metal sheet that will form the bottom wall is pushed in a drawing direction relative to an outer portion of the metal sheet that will form the coupling portion; forming at least one groove or cavity in a surface of the bottom portion of the metal sheet and, then, pushing the bottom portion relative to the outer portion in a retro-forming direction opposite to the drawing direction; connecting a brake band to the coupling portion of the bell.