| To position the
material being formed in the brake, mark a line on your material that is mid
way through a 90 degree bend (the 45 degree line), then place the material
so that you see that line when sighting down the radius head from a bird's
eye view. Also known as the shadow line. This will be easier than it
probably sounds. You do not need to
clamp the material. Once the apron roller ( the part that swings up from
below) makes contact with the material being formed, the material will not
move on the brake table.
Machine thread adjusting bolts, two at each
end of the brake: one raises or lowers the radius head, the other does the
same for the apron roller.
Radius Head: replace this with another head
to change the radius size
Apron roller: this piece is not removed. You
use the adjusting bolts to move it up or down in relation to whatever size
radius head is installed.
To Change radius head: If changing to a
smaller radius, swap out the radius head first by removing one bolt at each
end of the brake that holds the head in place, and install a smaller size
radius head. Now use the machine thread adjusting bolts on each end of the
brake (there are 4 adjusting bolts, two at each end) to lower the radius
head to just above the table, and then raise the apron roller to about 1/4"
below the radius head. You can reduce or increase the clearance between the
radius head and the apron roller to suit your need. You can also taper one
end wider than the other.
If changing to a larger size radius, before
removing the radius head, run the two adjuster bolts on each end to their
widest separation of the radius head and apron roller. Then replace the
radius head with a larger size. Now adjust the radius head down to just
above the table, and bring the apron roller up to about 1/4" below the
radius head.
If the radius head you are installing has a
tab on one end, place the table under a block welded to the bed of the
brake. This prevents the radius head from rotating while forming material,
and it is why you do not need to clamp the material. |
