| 摘要 |
<p>A method and apparatus for fine shearing a metal workpiece (100) involves placing the workpiece (100) on a stationary die surface (23) for support and driving a single punch (52) against the workpiece (100) such that at least a portion of the workpiece (100) is placed in compression. The punch (52) is then driven into and through the workpiece (100) along a predetermined path which has a first directional component both perpendicular to and directed toward the die surface (23) and directed into the compressed portion of the workpiece. The punch (52) is driven with a force having components both perpendicular to and parallel to the path of the punch (52). The force component perpendicular to the punch path is large enough to keep the compressed portion of the workpiece (100) in a plastic state. The force component parallel to the path of the punch (52) is large enough to overcome the shear strength of the workpiece along the path. The method and apparatus allow the formation of a variety of fine-sheared surface configurations.</p> |
