Patent ID: 6171179
Filing Date: 2001-01-09
Classification: B24B,B24D,F16C

Abstract:
A ball grinding machine for grinding bearing balls, comprising:a non-rotating upper plate having a top side and a bottom surface, wherein at least a hydraulic chamber and an adjacent annular recess are concentrically formed on the bottom surface and a plurality of hydraulic inlet openings are integrally formed the inside of the hydraulic chamber;at least a floating ring having an annular protrusion slidably installed and matched to the hydraulic chamber and a slanted surface for exerting a grinding load to bearing balls;at least a fixed ring having an annular anchoring block and an inner surface facing towards an adjacent floating ring, wherein the annular anchoring block is inserted to the corresponding annular recess for anchoring to the non-rotating upper plate;a rotating lower plate having a top surface and a back side; anda grinding surface positioned over the top surface of the rotating lower plate.