Ron Spring, Plant Tooling Manager
Butler Manufacturing Company Galesburg, IL
“ Butler is the largest manufacturer of steel buildings
in the world. In the building division, Galesburg is the largest
plant,
we call it the mother plant. We have six plants in the US plus
plants in China, Saudi Arabia and Hungary. We build everything
from agricultural buildings to office buildings, schools, churches.
All are completely made to order...all custom.”
How do you punch all of the holes in the building?
“
It depends on what the part is. Where we use UniPunch tooling
a lot is in our trim areas...where we don’t roll
form the part because of volume...we uncoil it, shear it
to size,
punch and then brake it if it needs to be broke. We punch
up to 1/2-inch with UniPunch. We punch a lot of holes every
year...thousands and thousands of holes a year.”
Butler
is a big company with many variations within its product
line. How important is the reusability of UniPunch tooling
to you?
“
It’s real important. That’s one of the main
reasons why we are a big user of UniPunch tooling. It
would be a lot easier for me if we made everything the
same every day,
but that is not how we operate. The big advantage of
UniPunch tooling is that you can move the units around
on the templates,
you
can change setups, you can do a lot of different things.”
Do
you use dedicated setups here at Butler?
“
We do a lot more dedicated setups of UniPunch tooling
today than we used to. We used to have three die rooms
in this plant
where a die maintenance person would make the setups.
When they were done with it, they would bring it back
and he would
tear it down and clean it up. But now, we’re
down to one die room, and we have a lot of dedicated
setups
that we
leave set up because it saves time.”
What determines
whether you make a hard die or use unitized tooling
to produce a part?
“
It’s usually volume. When we develop a new product
line, our product engineering department puts a forecast
against it. The number I have in my head is...if we
are looking
at more
than 25,000
parts a year we will take a pretty hard look at hard
tooling. If it’s a complex part with difficult
forming and the only way to make it is with hard tooling,
then we have no choice
other than
to go to a progressive die. But we still make a lot
of parts where we punch them flat on UniPunch tooling
and
then form
them. "
“ We have a 25 foot, 700 ton press that we run UniPunch
tooling in every day. When we change the setup on that big
press,
we roll the setup out of the press with a power winch, change
the units outside of the press, and then roll it back
in.”
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