| 摘要 |
<p>A punching apparatus for punching shapes out of sheet material by means of punching tools. A punching table made of bendable material is pressed toward the punching tools by a presser cylinder as the cylinder is moved in contact with and along one surface of the bendable punching tables while pressure is exerted against the opposite punching table surface by counter pressure means through said tools and through said sheet material to be punched.</p> |
