Patent ID: 8567383
Filing Date: 2013-10-29
Classification: B24B,B28D

Abstract:
1. A jig for fixedly securing a rare earth magnet block for use with a multiple blade assembly for multiple cutoff machining of the rare earth magnet block, said multiple blade assembly comprising a plurality of cutoff abrasive blades coaxially mounted on a rotating shaft at axially spaced apart positions, each blade of the plurality of cutoff abrasive blades comprising a core in the form of a thin disk or thin doughnut disk and a peripheral cutting part on an outer peripheral rim of the core, wherein the jig comprises a pair of jig segments for clamping the magnet block in the machining direction for securing the magnet block, one of the jig segments is provided on its surface with a plurality of guide grooves corresponding to the plurality of cutoff abrasive blades so that an outer peripheral portion of each of the plurality of cutoff abrasive blades is inserted into the corresponding guide groove, a cutting fluid flows into the guide groove and is accommodated in the guide groove; the cutting fluid contacts with the outer peripheral portion of the cutoff abrasive blade when the outer peripheral portion runs through the guide groove; and the cutting fluid is entrained on the outer peripheral portion of the cutoff abrasive blade.