The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 15, 2002
Filed:
Nov. 16, 2000
Sumitomo Special Metals Co., Ltd., Osaka, JP;
Abstract
A work cutting apparatus comprises a plurality of cutting blades each including a metal plate phase containing a super hard abrasive grain dispersed entirely thereon. A work made of a rare-earth alloy magnet member is submerged in a coolant in a container. The work submerged in the coolant is cut by rotating the cutting blades at a high speed not slower than 8000 rpm and by moving the cutting blades to the work vertically or along a normal line passing a tangential point between the cutting blade and the work. The coolant may be supplied from a hose to a cutting region at a time of the cutting. At the time of cutting, the work is vibrated in a direction parallel to a main surface of the cutting blade and perpendicular to a direction of the cutting. Preferably, the cutting blade has a tip portion formed with a cutout, and a spacer including two main surfaces each having an outer circumferential portion formed with an annular stepped portion is inserted between the cutting blades.