| 摘要 |
<p>The blade (3) has a cutting profile (3b) terminated by a tip (3a) placed on a symmetric axis (5) of the blade, and orifices (4) for fixing the blade on mechanical driving units of a cutting machine. Wings (1c, 1d) are completely removable in the blade under the effect of exterior pressures and automatically returned to their initial positions when the pressures are cancelled. The wings are integrated to an elastic latch (1) that is inserted in a cut (2) of the blade and constituted by a steel piece. The latch has a base with a thickness equal to a thickness of the blade.</p> |
