Cold forming aluminum metal matrix rotors
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United States of America Patent
Stats
-
Jun 12, 2001
Grant Date -
N/A
app pub date -
Apr 10, 1998
filing date -
Apr 10, 1998
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
This invention relates to an improved method for producing aluminum MMC rotors. The method comprises the steps of initially casting an aluminum MMC rotor casting having a central pilot aperture, cold forming the friction section, cold forming the mounting section, punching the central pilot aperture to remove excess aluminum MMC material, and then forming fastener apertures in the mounting section. In the step of cold forming the friction section a plurality of cylindrical rollers are pressed against each side of the friction section and the rollers are moved in a circumferential direction around the friction section to finish the friction section to the desired dimensions. In the step of cold forming the mounting section a plurality of cylindrical rollers are pressed against each side of the mounting section and the rollers are moved in a circumferential direction around the mounting section to finish the mounting section to the desired dimensions. The excess aluminum MMC material is removed at the radially inner edge of the mounting section by punching the central pilot aperture. Finally, fastener apertures are formed in the mounting section.
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