This is designed to be able to sequentially process the spherical portion corresponding to the head and neck of the ball stud collet to secure the stud ball relates to a chuck device, and the lower table provided in the direction perpendicular to the collet chuck and the center direction in horizontal plane simultaneously biaxially NC control transfer is possible with respect to the collet chuck, mounted on one side of the lower table NC rotary table and are, NC on the lower table on the tool rest and NC rotary table provided on the rotary table and the direction opposite to the infeed amount coaxially disposed and having a movable section and a lower table surface and parallel to the direction of the rotation axis by the lower table is fixed to the neck of the spherical turning the tool, and the spherical burnishing tool sequentially to coincide with the axis of rotation of the ball stud and the ball is spherically processed by the turning tool is provided on the tool rest, characterized in that the stud at the same time be able to turning The.
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