Patent ID: 6505394
Filing Date: 2003-01-14
Classification: B22F,B23D,B28D,H01F,H02K,Y02P,Y10T

Abstract:
A method for cutting a rare earth alloy sintered magnet including an Ndâ€”Feâ€”B compound, comprising the steps of:a) supplying slurry containing abrasive grains onto a wire from a slurry supply tank; b) machining the rare earth alloy sintered magnet with the abrasive grains, interposed between the wire and magnet, by running and pressing the wire against the magnet to produce a plurality of rare earth alloy plates each having two cut surfaces that are parallel with each other; c) removing sludge of the rare earth alloy sintered magnet out of the slurry to maintain a viscosity of the slurry within a predetermined range; and d) transporting the slurry containing the abrasive grains from which the sludge has been removed so that the viscosity of the slurry is set within the predetermined range to the slurry supply tank, wherein the slurry containing the abrasive grains is circulated through a path including the slurry tank and a place where the machining is performed so that the machining step can be performed continuously.