Metal working – Method of mechanical manufacture – Structural member making
Patent
1993-05-03
1994-11-29
Vo, Peter Dungba
Metal working
Method of mechanical manufacture
Structural member making
29465, 29DIG33, 72389, 83879, B21D 3100, B21D 2200, B26D 308
Patent
active
053677706
ABSTRACT:
The present invention provides an automated method for forming indented embossed edges around along the periphery of a light aperture for mounting a panel light's pane and frame assembly therein. A panel blank made of sheet metal is mounted on the table of an automated CNC punch press. Next the light aperture is scored in the blank using the punch press to punch out elongated slots between widely spaced apart bridge tabs forming an aperture blank within and connected to the panel blank by the spaced apart bridge tabs. Next the indented embossed edges are formed with two cooperating punch and die sets. A first right angled die set is used to form the four corners. A second straight bar die set is used with an automated nibbling function of the CNC punch press machine to form the linear extending sides of the indented embossed edge. The cooperating punch and die sets are designed to form an edge and not punch through a hole in the blank. The panel is assembled from a front skin and a back skin formed from two such panels and the panel aperture is formed by removing the aperture blanks after the skins have been attached thereby generally forming the shape of the panel. The light assembly is then mounted within the panel aperture.
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Dungba Vo Peter
Masco Industries, Inc.
Rosen Steven J.
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