GRINDER USED, FOR EXAMPLE, FOR GRINDING FLAT, CONVEX AND CONCAVE SURFACES AND METHOD OF ITS APPLICATION Russian patent published in 2013 - IPC B24D15/04 

FIELD: process engineering.

SUBSTANCE: invention relates to machine building. Grinding means, for example, paper, fabric or other material with abrasive layer is pressed against ground surface by flexible pressure plate. The latter can copy concave and convex surface to accurately track the radius of their curvature. Pressure applied in operation to grinding unit body, mechanically driven handle or handles is transmitted to pressure plate at, at least, two points at a time via one rocker.

EFFECT: higher efficiency of grinding.

16 cl, 20 dwg, 6 ex