COMBINATION GRINDING WHEEL Russian patent published in 1998 - IPC

FIELD: plants of metal working industries, namely finishing and dressing blanks by grinding wheels. SUBSTANCE: combination grinding wheel includes body. Members with layer of large-size abrasive particles are rigidly secured to said body. Members with layer of small size abrasive particles are mounted on said body with possibility of radial motion. Said members with layer of large-size and small-size abrasive particles are in the form of metallic belts with respective layers applied onto them. Body of wheel includes helical groove with T-shaped cross section. Thermobimetallic tape, hydroplast and belt with layer of small-size abrasive particles are successively placed into said groove. Belt with layer of large-size abrasive particles is arranged along helical line between turns of said T-shaped cross section groove. Belt with layer of small size abrasive particles is moved by means of hydroplast due to deformation of said thermobimetallic tape. EFFECT: improved design. 5 dwg