摘要 |
Profiles (50) are formed in a production line with a cross-section that vari es along their length from a plane metal strip (10) that is unwound from a tape reel (9), whereby edge cutters (14) and a number of roll-forming units (17-2 4) are used where not only the edge cutters but also the roll-forming units can be displaced individually sideways relative to the strip. The edge cutters (14) and the roll-forming units (17-24) are individually controlled. The formed profile is curved in a curving station integrated into the line, whic h curving station comprises roller pairs (82, 84; 83, 85) that can be controll ed to roll sides of the profile (50) such that they become thinner such that th e profile is curved or twisted as it is formed. The roller pairs and the sideways displacement and the angular motion of the roll-forming units are controlled by the same computer program such that the roller pairs follow th e sides and such that a line (II) between the axles of one roller pair is held always perpendicular to the surface being rolled.
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