| 摘要 |
<p>The press brake has a tool holder (2) fixed to the machine slide. The tool (5) is held by clamps (4) spaced along its length, an inflated tube (9) between the parts applying the retraining pressure. Each clamp is held by a retainer screw (3), locked to prevent complete removal, and is spring loaded. The tube acts on the heel of the clamp, maintaining its toe (4a) under the head (5a) of the tool. When changing tools, the tube is depressurised. This releases a pressure switch in the machine's electrical supply. The machine cannot operate until the tube has been inflated, holding the tools.</p> |
