| 摘要 |
A machining centre for panels (1) made of wood or the like comprises a work table (3) for supporting an unworked panel (1) and at least one machining unit (4), which move relative to each other, the latter being equipped with tools (5) acting on the unworked panel (1) to make it into at least one machined workpiece (1a); the work table (3) comprises: a plurality of bars (6) mounted on longitudinal beams (7); a vacuum hold-down unit (8) positioned on each bar (6) and whose top surface (8a) forms the panel (1) supporting table; means (9) for generating a vacuum acting on each vacuum hold-down unit (8) in order to securely hold down the panel (1); each vacuum hold-down unit (8) is equipped with means (10) for moving it along the third, vertical axis (Z) to adopt at least two stable configurations between a first, lowered position where the top surface (8a) is close to the respective bar (6), and a raised position, where the top surface (8a) is away from the bar (6). |
