TOOL FOR GRINDING AND POLISHING PARTS WITH LOOSE ABRASIVE (OPTIONS) Russian patent published in 1998 - IPC

FIELD: grinding and polishing external and internal surfaces of parts, such as bodies of revolution. SUBSTANCE: tool has bath 1 holding abrasive 2 and counter-body 5 mounted on base of bath 1. Part 8 being treated is secured on mandrel or in chuck of spindle 6 of vertical drilling machine, for example. In grinding external surface of part, working surface of counter-body 5 is female surface relative to part 8 and in treating internal surface it is male surface. Counter-body working surface in its cross-sectional area is circumference or part of it with its center slightly displaced from spindle axis. This provides for wedge-shaped clearance between surface being treated and working surface of counter- body. In the course of part rotation, abrasive is drawn into this clearance and functions to grind the surface. When out of clearance, loose abrasive is mixed up also due to rotation of part. EFFECT: simplified design, improved reliability. 3 cl, 5 dwg