| 摘要 |
In this three-roll bending machine having a 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 in each case in a closed bearing element (7) by means of each of its two roll ends (5, 6) and the end (9) of the axial extension. Each of these bearing elements (7) is connected fixedly 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 stand (3, 4, 12). The two outer hydraulic cylinder/piston arrangements are located below the upper roll (1) and are supported via side pillars (3, 12) on a crossmember arrangement (4) of the machine stand. The middle hydraulic cylinder/piston arrangement (10) is located above the upper roll (1) and is supported in a side pillar (3) connected to the crossmember arrangement (4) and resembling a gantry frame. The lower rolls (2) are mounted simply on two sets of supporting rollers (16) which are likewise supported via transversely displaceable bearing-block arrangements (17) on the crossmember arrangement (4). The supporting rollers (16) are at a constant distance from one another and drive the lower rolls (2). The upper roll (2) is likewise driven. Such a three-roll bending machine has an especially high load-bearing capacity and can be used universally, for example also for bending on. <IMAGE>
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