| 摘要 |
FIELD: mechanical engineering and other branches of industry. SUBSTANCE: abrasive grinding tool has substrate and surface layer with abrasive members. Surface profiled layer has recesses with inner side surface and bottom. Abrasive members are inserted into recesses for defining rough surface by surfaces projecting from recesses. Abrasive members are made from abrasive grains dispersed in binder. Profiled surface of substrate is made from polymeric film composed of at least two layers. Thickness of substrate is within the range of 10-1000 microns. Substrate is made from material selected in the group containing polyethylene terephthalate film. Recesses have round, square, rectangular and triangular section. Axes of recesses are perpendicular to their bases. Recess density may be within the range of 2-10000 rec/sq cm and within the range of 100-10000 rec/sq cm. Abrasive members are made from material containing spherical components and abrasive liquid solution. Upon interaction with liquid solution spherical components are expanded. Spherical components are filled with steam. Abrasive members are distributed on surface layer at density of 2-10000 members per sq cm or at density of 100-10000 members per sq cm in rows and columns. Abrasive members are made elongate, contain 5-95% of weight of abrasive grain and are of equal height. Average size of abrasive members is from 0.1 to 1000 microns. Surface layer has coat made from material selected in the group containing phenolic, acrylic resins, epoxy resin adhesive, polyester resins, ureaformaldehyde resins. Binder is selected in the group containing phenolic, acrylic, polyester, ureaformaldehyde, melamine phenolic resins. EFFECT: increased efficiency, uniform and high-speed working, provision for removal of working wastes from abrasive surface, enhanced reliability in fastening of abrasive material. 31 cl, 7 dwg |
