| 摘要 |
<p>PURPOSE:To improve appearance, to prevent the leaking of rain and to hold strength by continuously unifying three of both upstanding walls and a side wall by the machining of a metal plate body by applying heat. CONSTITUTION:Heat is applied to an aluminum plate body and a sectional shape is machined in a U shape, and the aluminum plate body is also machined in a curved shape in the longitudinal direction simultaneously, and an uptanding wall 1 suspended to the outdoor side, a side wall 2 and an upstanding wall 3 hung down to the indoor side are mutually unified and formed continuously Cavities 5 are formed according to the shape of a bent coping molded in a mold 4, a heated aluminum plate body 6 is placed on the mold 4, a space 8 is formed by a cover 7 pushed by clamp load, the space 8 is supplied with a molding gas, and the plate body 6 is deformed in an ultra-plastic manner and molded as a molding method at that time. Accordingly, rain does not leak because there is no joint, and required strength can be ensured even in thin wall thickness.</p> |
