Machining equipment, ceramic balls and rolling bearings

摘要

PROBLEM TO BE SOLVED: To provide a processing apparatus capable of suppressing cracking during polishing of a plurality of green balls having greatly different diameters in the initial state even when a special construction method not including a binder is used. Further, a ceramic ball formed by the processing apparatus and a rolling bearing are provided. A processing apparatus 1 includes a first surface plate 10, a first shaft 12, a second surface plate 20 including a holding portion 20B, a second shaft 22, a polishing layer 11, and a first elastic member 50. And prepare. The first surface plate 10 includes a first surface 10c that contacts and holds the green ball 91. The first axis 12 rotates the first surface plate 10 around the axis α. The second surface plate 20 faces the first surface 10c, includes a second surface 20c that contacts and holds the green ball 91, and extends so as to project in a direction intersecting the second surface 20c and surrounds and holds the green ball 91. Including part 20B. The second axis 22 rotates the second surface plate 20 around the axis β. The polishing layer 11 polishes the green balls 91 by coming into contact with the green balls 91. The first elastic member 50 is arranged on the inner wall portion of the holding portion 20B of the second surface plate 20. [Selection diagram] Fig. 1