METHOD OF GRINDING ROUGH-SHAPED OBJECTS TO A CLEAN SPHERICAL FORM

摘要

According to the claimed process a superior roundness is obtained at low cost and less time in case the roughtly formed ceramic ball element (4) is placed in the open end of a tube (1) which end part has such a diameter and shape (3) that the ball (9) can remain in the tube and whilst the tube is set under vibration, preferably at a frequency of 20 - 25 KH. Meanwhile polishing means (7) is supplied to the ceramic ball surface.