METHOD AND APPARATUS FOR MULTIPLE CUTOFF MACHINING OF RARE EARTH MAGNET BLOCK, CUTTING FLUID FEED N

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The present invention relates to a method of multi-cutting a rare earth magnet. The method of multi-cutting a rare earth magnet includes : inserting grinding fluid into a grinding fluid supply nozzle from an inlet, making the grinding fluid spurt from the slit, and rotating the blade while each outer circumferential part of the cutting grindstone blade is inserted into each slit of the grinding fluid supply nozzle; and multi-cutting the rare earth magnet using the grinding fluid supply nozzle. The grinding fluid supply nozzle includes a plurality of cutting grindstone blades including a grindstone external blade formed at an outer circumferential edge of a thin disk-shaped or a thin donut disk-shaped large plate and arranged in a rotating shaft in an axial direction of the rotating shaft at regular intervals, has one side on which an inlet for the grinding fluid is formed and the other side on which a plurality of slits corresponding to the cutting grind stone blade are formed. The outer circumferential parts of the cutting grindstone blade may be inserted into the slits, respectively.