| 摘要 |
In a three-roll bending machine with vertically adjustable upper roll (1) and two transversely adjustable, driven lower rolls (2), the upper roll (1) is provided on one side with an axial extension (8) and is mounted via its two roll ends (5, 6) and the axial extension end (9) in each case in a closed bearing element (7). Each of these bearing elements (7) is connected rigidly to a double-acting, vertical hydraulic cylinder piston arrangement (10). All three hydraulic cylinder piston arrangements (10) are arranged in the vertical plane having the upper roll (1) and are supported in the machine frame (3, 4, 12). The two outer hydraulic cylinder piston arrangements lie underneath the upper roll (1) and are supported via side stands (3, 12) on a transverse crossbar arrangement (4) of the machine frame. The middle hydraulic cylinder piston arrangement (10) lies above the upper roll (1) and is supported in a side stand (3) in the shape of a portal frame connected to the transverse crossbar arrangement (4). The lower rolls (2) are mounted only on two sets of support rollers (16), which are supported likewise on the transverse crossbar arrangement (4) via transversely displaceable bearing block arrangements (17). The support rollers (16) are at a constant distance from one another and drive the lower rolls (2). The upper roll (1) is likewise driven. Such a three-roll bending machine can be subjected to particularly high loads and can be used universally, for example even for pre-bending. <IMAGE>
|
