19
LEG-IN ROLLING WITH GUIDES
Adjust the rolls for leg-in bending as shown in figure-1. The top roll safety flange must NOT be
too tight or the material will wave. Both radial (Y) and axial (X) rollers of the guide roller must be
touching the material end. (figure-2) adjust the rolls so that a diameter 5% smaller than the necessary
diameter can be achieved. This is necessary for the ends of the material to meet at the end of a full
circle bending. The radial (Y) must be forcing the material at all steps of bending. (figure-3) the axial
rollers (X) must be used to correct the feed direction. If the material is tending to go towards the
machine the axial rollers (X) must be pushed more. If the material is tending to bend away from the
machine then one of the axial rollers (X) must be pushing too hard. It must be relieved.
figure-1 is a set up position for a standard leg-in material. Although you can bend most leg-in materials
with standard rolls we recommend you special rolls for serial jobs.
LEG-OUT ROLLING WITH GUIDE ROLLS
The rolls must be positioned as shown in figure-6 to bend leg-out Distance between the
sections (L on figure-6) must be some 10 % wider than the material itself. Adjust the rolls so that a
diameter 5% smaller than the necessary diameter can be achieved. This is necessary for the ends of
the material to meet at the end of a full circle bending. The radial roller (Y) must be forcing the material
at all steps of bending. (figure- 7 and 8)The axial rollers (X) must be used to correct the feed direction.
If the material is tending to go towards the machine the axial rollers (X) must be pushed more. If the
material is tending to bend away from the machine then one of the axial rollers (X) must be pushing
too hard. It must be relieved.(figure-8)
Содержание HPK 665
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