FIELD: grinding. SUBSTANCE: movement is applied at the direction of lock of the blade to grinding wheel, which is opposed. Reciprocating motion is applied to the blade additionally along axis of the blade, as well as rotary motion about the axis. Motion of grinding wheels is matched with motion of blade. Grinding is combined with feeding at areas, which adjoin edges of grinding wheels symmetrically to axis of the blade. EFFECT: improved efficiency of operation. 4 dwg
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