Ramp segments for centrifugal ramp reaction plate

摘要

A clutch ramp reaction plate is adapted to be positioned adjacent a centrifugal actuation module of a centrifugally actuated vehicular clutch. The ramp reaction plate includes attached individually machined ramp segments manufactured separately from the ramp reaction plate. In one embodiment, the ramp segments are made from a powdered metal process to assure uniform tolerances. In an alternate embodiment, the ramp segments are formed of hardened stamped steel material. The ramp reaction plate is machined to accept the segments, which includes a surface hardness higher than that of the ramp reaction plate to accommodate wear resistance. The ramp segments can be impregnated with lubricants or polytetrafluoroethylene materials to reduce rolling friction and wear between the ramp surfaces and mass weight rollers of the centrifugal actuation module that interacts with the ramp surfaces. The segments are attached to the ramp reaction plate by means of fasteners including bolts, rivets, or adhesives.