GRINDING DIAMOND WHEEL, AND METHOD OF MAKING SAME

• US 3,830,020 A
• Filed: 01/27/1972
• Issued: 08/20/1974
• Est. Priority Date: 10/22/1969
• Status: Expired due to Term

• Current Assignee: Shoshichiro Gomi
• Original Assignee: Shoshichiro Gomi
• Inventors: Gomi, Shoshichiro
• Primary Examiner(s): Simpson, Othell M.
• Application Number:
  US05/221,206
• Time in Patent Office: 936 Days
• Field of Search: 51/26R,293,307-309
• US Class Current: 451/541
• CPC Class Codes: B24D 18/00 Manufacture of grinding tools or other grinding devices, e.g. wheels, not otherwise provided for
• CPC Class Codes: B24D 5/02 Wheels in one piece
• CPC Class Codes: B24D 7/18 Wheels of special form

Abstract

A diamond grinding wheel for forming the edges of glass plates into desired cross-sectional shapes wherein the diamond layer of the grinding wheel is a radial cross-section passing through the axis of said wheel and has continuously varying and uniform distributionof the diamond abrasive in accordance with grinding work required for shaping the edges of the plates to be ground and the method of manufacturing such a wheel. It is an object of the invention to prevent the uneven deterioration of the grinding surface of a pencil-edged diamond grinding wheel resulting from the grinding surface of the diamond layer of the wheels being deformed excessively from a given curvature radius in the process of grinding the cut edges of glass plates.

Claims

1. A grinding wheel for forming a generally convex peripheral surface from a generally flat peripheral surface in a glass plate whereby the amount of materials that have to be ground away from the generally flat peripheral surface varies from a minimum at the center of the peripheral surface to a maximum at its edges, a generally concave grinding layer of a selected thickness disposed about the periphery of said wheel and having a shape the complement of that to be imparted to said flat peripheral surface, said layer being comprised of a binder and diamond particles and the amount of said diamond particles varying uniformly and evenly in distribution throughout said thickness from a minimum concentration at the center of said concave surface to a maximum at its edges and in proportion to the amount of materials that have to be ground away from said flat peripheral surface to form said convex peripheral surface.

2. The grinding wheel of claim 1 wherein said concave grinding layer is '"'"''"'"''"'"''"'"'V'"'"''"'"''"'"''"'"'-shaped.