| 摘要 |
A method and apparatus for bevelling interior angles of sheets of coloured or non-coloured plain glass, plate glass or flattened glass, is disclosed. The vertex of the interior angles is bevelled, with assigned rake and bevel angles of the rotary tool, by moving the tool parallel to the bisector of said angle, first on one side and then on the other side of the bisector, with the active part of the tool substantially tangential to the bisector. The apparatus comprises at least one rotary tool such as a grinding wheel, drive means for rotating the tool, a first member for supporting the tool and a rotary assembly or the like to enable them to be moved angularly within a first vertical plane about a diameter of the tool. A second member supports the first member in such a manner as to enable them to be moved angularly within a second vertical plane perpendicular to the first vertical plane. The second member is supported in such a manner as to enable the tool to be moved in three mutually perpendicular directions and rotated about one of the directions. A sheet of coloured or non-coloured plain glass, plate glass or flattened glass with at least one bevelled interior angle is produced.
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