DEVICE FOR GRINDING OF SPHERICAL BOTTOM OF DEAD HOLE AND METHOD OF GRINDING USING THIS DEVICE Russian patent published in 2016 - IPC B24B11/00 

FIELD: machine building.

SUBSTANCE: device contains a ball with an abrasive material connected with a drive shaft, and has a ring with an eccentric hole located with a possibility of rotation between the input to a dead hole of a part and its bottom. The drive shaft is made flexible, and passes through the eccentric hole of the ring eccentrically to the axis of the part dead hole. During grinding the ring is rotated around the axis of the part dead hole with the complete turn around the said axis.

EFFECT: increased quality of the spherical surface grinding with the assurance of uniform accuracy.

11 cl, 2 dwg