Cutting Wheel With A Permanent Magnet

- Sep 28, 2017-

A method for manufacturing an outer blade cutting wheel comprising: a base in the form of an annular thin disk of cemented carbide having an outer peripheral edge; and an outer peripheral edge formed on an outer periphery of said base A blade portion comprising the steps of: holding the substrate between a pair of circular first jigs to hold the base, the diameter of the first jig being greater than the diameter of the base, The opposing surface of the substrate is covered by the first jig and a space is formed between the outer peripheral portions of the first jig, the first jig is connected with a permanent magnet, and by means of the magnetic attraction of the permanent magnet The abrasive particles coated with the magnetic material are held in the space between the outer peripheral portions of the first jig, the substrate sandwiched between the first jigs is immersed in the plating solution, and Providing a first electrode spaced from an outer circumference of the blade portion and surrounding an outer circumference of the blade portion in which abrasive particles are retained on an outer circumference thereof Electroplating on a substrate to deposit a metal or alloy for bonding the abrasive particles to each other and bonding to the substrate to form a composition comprising the abrasive particles and the metal or alloy Wherein the abrasive layer constitutes the blade portion, the protrusions, the thickness and the outer diameter of the abrasive layer are trimmed with a conductive spark and / or a grinding wheel, and the outer cutter cutting wheel is sandwiched between a pair And a second jig having a diameter smaller than the diameter of said cutting wheel so that the opposing surface of said cutting wheel is covered with said second jig over a predetermined range And said blade portion protrudes beyond the outer edge of said circular second jig and submerges said cutting wheel sandwiched between said second jigs in an electro-polished liquid, said electro-polished liquid The electroplating step has been used as a plating solution, and the first electrode and the pair of second electrodes used in the electroplating step are provided as counter electrodes, and the pair of second electrodes are opposed to the side surfaces of the blade portion , And with The side surfaces of the blade portion are spaced apart and the portion of the metal or alloy that is electrolytically dissipated between the abrasive particles and the surface of the blade portion by means of electrical energy between the cutting wheel and the counter electrode The debris contained in the debris fossa until the abrasive particles are partially highlighted from the surface of the blade portion to trim the cutting wheel.