| 摘要 |
<p>In a punching unit for punching apparatus comprising a support section (1) of a &sqsup& -letter shape with a material inserting groove (11) formed in the middle, a punch (2) vertically movably and removably mounted in a mounting bore in the side end of the upper half (1a) of the support section (1), a die (3) removably mounted in the side end of the lower half (1b) of the support section (1) and having a die opening formed conforming to the outer periphery of a working surface of the punch (2), and a lifting mechanism (4) removably connected to the die (3), the working surface of the punch (2) is formed in a shape of a concave slot, and a slug discharge bore is provided communicating with the die opening of the die (3) and with the lower half part (1b) of the support section (1).</p> |
