Core drill for drilling fine hole and method of manufacturing the same
OwnerAkimichi Koideinventor
Life of this patent
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Abstract
An object of the invention is to provide a core drill for drilling a fine hole which can securely fix an abrasive grain to a core material, can finish to a predetermined diameter in a relatively easy manner, and can manufacture one having a superfine diameter about some μm, and a method of manufacturing the same. A core drill for drilling a fine hole in accordance with the invention for achieving the object is structured such as to drill a fine hole onto a work, or grind an inner diameter of the drilled fine hole to a predetermined shape, and characterized by bundling ceramics long fibers so as to make a core material, impregnating the core material with a molten synthetic resin so as to harden, and holding an abrasive grain by the synthetic resin.
Claims1
A core drill for drilling a fine hole into a worksurface or for grinding an inner diameter of the drilled fine hole to a predetermined shape, comprising:
- bundled ceramic long fibers defining a core material, hardened molten synthetic resin impregnating said core material, and plural abrasive grains partially embedded in and extending from the synthetic resin.
Dependencies are inferred from the claim text.