METHOD FOR POLISHING SURFACES OF OPENINGS Russian patent published in 2002 - IPC

FIELD: machine engineering, namely processes for polishing surfaces of openings of machine parts. SUBSTANCE: method comprises steps of providing lengthwise feed of part; working it by means of discs mounted onto mandrel and inclined relative to rotation axis; using discs with radial notches at side of working surface and with different diameters exceeding that of openings; impregnating discs of large-grain abrasive matter with bakelite varnish and impregnating discs of small-grain abrasive matter with lubricating and cooling technological fluid; mounting discs onto mandrel according to their increased diameters, lowered grain size of abrasive matter and their rigidity. It allows to effectively use all discs and to simplify penetration of technological fluid to polishing zone. EFFECT: enhanced quality of polished surface. 2 dwg