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

摘要

The present invention rotates cutting grinding stone blades while discharging a grinding solution through each slit by arranging the cutting grinding stone blades, which include a grinding stone outer blade on the rim of a bedplate of a thin disc plate or a thin doughnut disc plate, on a rotary shaft along an axial direction of the rotary shaft at predetermined intervals and guiding the grinding solution to the grinding solution supply nozzle from an inlet while the outer circumferences of cutting grinding stone blades are inserted into the slits of the grinding solution supply nozzle respectively using the grinding solution supply nozzle including the inlet for the grinding solution on one end and the multiple slits corresponding to the each cutting grinding stone blade on the other end. The outer circumferences of cutting grinding stone blades are capable of being inserted into the slits of the grinding solution supply nozzle respectively. The present invention is capable of effectively supplying a small amount of the grinding solution to a cutting point when multi-cutting the rare earth magnet in comparison with an existing method, thereby precisely cutting the rare earth magnet at a high speed.