Patent ID: 6662612
Filing Date: 2003-12-16
Classification: B21H

Abstract:
In a pin type structure having an elongated pin shank with an enlarged pin head at one end, apparatus for rolling a fillet radius at the juncture of the pin head and pin shank, said apparatus comprising:a roller assembly, a pin feeder, and a push rod assembly, said roller assembly including a plurality of roller subassemblies, each of said roller subassemblies including a rotatably supported roller, said roller having a generally circular contour and terminating at its radially outer end in a circumferential arcuate tip having a contour for forming the fillet radius, said roller subassemblies adapted to be mounted with said rollers oriented to define an input opening having a vertical axis for receiving the pin shank with said rollers engaging the juncture at the pin head and pin shank, said pin feeder operatively associated with said roller assembly and having an outlet end locatable substantially in line with said vertical axis of said input opening to periodically have a pin drop substantially vertically into said input opening, said push rod assembly operatively associated with said roller assembly and including a push rod adapted to be moved vertically into engagement with the pin head when located in said input opening, said push rod being rotatable and adapted to engage the pin head at a preselected magnitude of force against said arcuate tips of said rollers and to rotate the pin at a preselected speed of rotation whereby the fillet radius is roll formed by said arcuate tips at the juncture of the pin head and pin shank.