GRINDING WHEEL AND METHOD FOR MAKING IT Russian patent published in 2004 - IPC

FIELD: manufacture of grinding wheels. SUBSTANCE: grinding wheel includes first and second main surfaces. First main surface has primary abrasive zone with abrasive material in the form of layer of abrasive particles bond with it. Said abrasive zone is placed on outer peripheral portion of first surface (the last extends by 10 - 50% of distance from periphery until center of wheel) and central zone placed on remaining portion of above mentioned surface of wheel. Method for making grinding wheel with peripheral primary abrasive zone extending by 10 - 50% of distance from periphery until center of wheel comprises steps of feeding abrasive grains onto deposition surface for depositing grains in the form of annular zone by means of cone for depositing grains; arranging said cone over surface for depositing grains according to condition of arranging its lengthwise axis normally relative to said surface; electrostatically depositing grains onto base material of wheel. EFFECT: enhanced effectiveness of process for making grinding wheels, possibility for making new designs of grinding wheels significantly improved in comparison with known before designs. 12 cl, 6 dwg