| 摘要 |
<p>A fin folding machine (10) including a pair of opposed clamping tools (32, 34) disposed on opposite sides of a thin sheet material (12). The clamping tools (32, 34) are movable transverse to and into engagement with the material (12) to clamp the material (12). A pair of opposed forming tools (36, 38) are disposed on opposite sides of the material (12) to fold the material (12) in one direction by one of the forming tools (36, 38) and in the opposite direction by the other of the forming tools (36, 38). Gas charged accumulators apply a force to continuously urge one of the clamping (32, 34) and forming tools (36, 38) into engagement with the material (12). Camming devices (102, 104, 106, 108) move one of the clamping (32, 34) and forming tools (36, 38) away from engagement with the material (12) to a clearance position, preventing respective clamping (32, 34) or forming tools (36, 38) from exceeding a predetermined material engagement stop position regardless of the operating speed of the fin folding machine (10).</p> |
