S
M
A
5
0
B
E
R
-
13
-
23
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1
/ V
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©
15
Settings (radius)
too large
Guiding roll too large
(radius incomplete)
too small
Guiding roll too small
(radius cuts into material)
> 90°
Angle greater than 90°
(radius incomplete)
< 90°
Angle smaller than 90°
(radius cuts into material)
Notes on radius milling:
Choosing the right guiding roll to ensure the correct
lateral position of the radius is just as important as
setting the correct height of the guiding plate.
If the wrong guiding roll is used, the machined radi-
us will not form a smooth transition with the end
face of the workpiece.
If the guiding roll used is too large, the appearance
of the resulting radius is similar (but rotated by 90°)
to that created when the guiding plate is set too low.
If the guiding roll used is too small, the appearance
of the resulting radius is similar (but rotated by 90°)
to that created when the guiding plate is set too
high.
The same phenomenon arises if the end and upper
faces of the workpiece are not aligned at right
angles to one another.
If the edge of workpiece to be machined was crea-
ted by cutting with a plasma cutter, the upper and
end faces of the workpiece may be out of rectangu-
lar alignment by as much as 7°. This type of misa-
lignment will result in a radius that is either incom-
plete or that cuts too far into the material depending
on whether the upper or lower surface of the work-
piece is being machined.
Although our conically shaped gui-
ding rolls are designed to put up
against the workpiece immediately
below the carbide inserts and can
therefore minimize the problem, they
cannot eradicate it entirely. Machi-
ning a correct radius therefore requires a 90° angle
between the adjacent faces of the workpiece.
correct
too low
too high
Adjusting the radii:
Please note that only the position of the upper
edge of the radius can be adjusted by rotating the
guiding plate. The lateral position of the radius on
the workpiece end face is determined by the guide
wheel fitted and cannot be altered.
Guiding plate set too low
(radius incomplete)
Guiding plate set too high
(radius cuts into material)
Guiding plate set correctly
(radius fully formed with smooth transition to work-
piece surfaces)
