| 摘要 |
A method and apparatus for buffing the balls of ball joint studs. The apparatus includes a frame structure including a base; an index table; a plurality of fixtures spaced circumferentially about the index table and each arranged to rotatably mount the shank portion of a stud, with the ball portion exposed, so that the stud may rotate about its lengthwise axis; an index drive mounted on the base and operative to indexingly move the table so that each fixture is moved successively through a loading station, a buffing station, and an unloading station; and first and second buffing wheels mounted on the frame structure at the buffing station with their respective peripheries arranged to buffingly engage opposed portions of the spherical surface of the ball of the stud as the ball is moved between the wheels by the index drive. Each buffing wheel is driven by a separate electric motor and the motors are separately pivotally mounted on the frame structure such that the respective wheels are biased by gravity against the ball. One wheel is arranged to exert an upward vertical component on the ball and the other wheel is arranged to exert a counteracting downward vertical component on the ball.
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