| 摘要 |
<p>A bending device for metal plates, which is designed to reduce the frictional resistance between the convex surface of a bar-like lower form and the concave surface of a support, thereby improving the slide rotatability of the raised surface of the bar-like lower form and improving the bending accuracy of metal plates, and to increase the physical strength to reduce friction; thus, it is used as a die for a long time. The danger of the support scattering around can be simply prevented when the support is cracked by the bent front end portion of a metal plate pressed by an upper form through erroneous operation colliding with the groove of the support or the like.</p> |
