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Feature Stories Archive
Fabricating Caps Is A.R.E.'s
Business
Ohio-based A.R.E. has created a niche for
itself by specializing in manufacturing parts for the small
truck accessories market.
BY KAREN M.
KOENIG
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A topcoat is sprayed onto the
plug, which is then sanded in a four-step process
then hand-buffed to a mirror-like
finish.
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There's a successful pickup line being used in the
eastern portion of Ohio. It's not, "Do you come here often?"
or even the old, but popular, "What's your sign?" Instead,
the lines getting people's attention in Massillon and Mount
Eaton, OH, are "Deluxe Commercial Units," "Nomadic Sports
Racks" and "Packasport rooftop storage systems," which are
designed and manufactured by A.R.E. for use on pickup
trucks.
A.R.E. also fabricates a variety of other fiberglass
accessories including: six styles of caps available with
options such as sports racks, sport wings and clothes rods;
sports boxes; fiberglass lids designed to match the hood of
the pickup truck; and running boards.
Making Plugs and Molds
The first step in fabricating fiberglass truck caps is
to manufacture a plug; this is done prior to making the
mold. "The plug is actually what you want the finished
product to look like," said Todd Van Gorder, CAD/CAM/CNC
programmer at the Mount Eaton facility. "You start with a
shell, then frame it with 2x4s so the shell won't move when
you make the mold," he said.
The wood acts as a reinforcement for stability during
curing, said Don Markley, Tooling/Mold Design supervisor at
Mount Eaton. Once the plug is designed and fitted,
technicians spray two applications of Lilly seal primer,
then utilize a four-step sanding process, first using 80
grit paper, then 120 grit, 180 grit and 320 grit. A topcoat
is then sprayed onto the plug, followed again by a four-step
sanding process -- 320 grit paper, then 400 grit, 600 grit
and 1,200 grit -- then hand buffed to a mirror-like finish.
"Then we make a mold of the plug," Markley said. "Depending
on the style, one plug can take five to six weeks to
complete," he added.
To help increase the production speed, accuracy and
uniformity of the plugs, A.R.E. formed the CNC department in
the fall of 1997. "Our short-term goals and challenges have
been to create computer models of existing caps and lids and
to work with R&D to develop future caps and lids," said
Van Gorder. "We want to be able to take the long process of
plug creation and shorten it to one to two weeks. Thus, a
mold could be ready in a much faster period of time."
Used along with Autodesk's Mechanical Desktop V. 2.0 and
Surfware Surfaces modeling software is the recently
purchased CIS five-axis CNC router with a 12-foot by 7-foot
table for trimming the plugs. A cutting path is generated
from the software and downloaded directly to the CNC router,
which is capable of speeds of 1,000 inches per minute on the
X, Y and Z axes and 30 rpm on the B and C axes. The maximum
speed for the spindle heads is 18,000-30,000 rpm. "The
machine also has an automatic tool changer and can change
tools in under 8 seconds," Van Gorder said.
"Parts done by hand can, at best, hope to have a
tolerance of 0.32 inch. Parts coming from the five-axis
machine have a tolerance of 0.001 to 0.002 inch. As the
process grows beyond caps and lids, this should be a
significant advantage for running boards. Also, the parts
from the CNC process will have perfect symmetry. As an
example, a corner on the driver's side will be identical to
the corner on the passenger side. Although we feel our parts
should look that way right now, this process helps guarantee
it," Van Gorder said.
"Uniformity also means that a given plug run today can be
rerun a year from now and come out exactly the same. Better
yet, small changes can be made to specific features on the
plug, leaving the rest to be exactly the same as before.
This will allow future enhancements to happen more
frequently because of an easier, less time-consuming
transition," he added.
Manufacturing the Caps
Truck caps are manufactured at the 256,000-square-foot
Massillon facility, which is located minutes away from the
Mount Eaton facility. A gray primer gelcoat is sprayed into
the cap mold, which then travels through a curing tunnel to
the lamination area. A spray ceramic material is applied to
all recessed radii to reduce the chance of air voids between
the gelcoat and fiberglass.
Fiberglass is then sprayed into the molds using a chopper
gun, which mixes the fiberglass strain with resin and
catalyst. The first layer is hand-rolled out and trimmed
before the mold travels through another curing tunnel to the
second lamination area. Reinforcement matting and honeycomb
are placed in on a resin-wet surface, then the interior
lamination containing white pigmented resin is applied with
a chop gun. Again, the crew hand rolls the fiberglass,
removing all air voids. The mold is trimmed again and
travels through another curing tunnel.
"The advantages of spraying the shell with "bondo" is
that there are no air pockets," said Clayton Steiner,
Quality Control/Raw Materials supervisor at Massillon.
"We inventory in excess of 800 molds," said Steiner.
"Each mold can be circulated more than one time on an
eight-hour shift, although we try to keep it down to only
one time."
Mold maintenance is critical to having a fine-finished
cap. Each of the 800-plus molds are inspected between each
use for any abnormalities that may cause a defect in the
next part made. "We can use each cap mold 50 times before we
clean, buff and apply Frekote, a clear, polymer release
agent to the mold," said Butch Darby, team leader for Mold
Maintenance at Massillon.
Finishing Touches
The fiberglass caps are available in six styles and
painted with DuPont ChromPremier high-solids finishes to
match the color code of any pickup. Gene McBroom, marketing
manager, added the A.R.E. color technician can custom-match
any A.R.E. product to the OEM paint.
Products are finished in a Binks spray booth. A.R.E. uses
DeVilbiss HVLP guns to spray the finishing materials on the
finished caps. The caps are then conveyed into an oven and
dried at 140F for approximately 20 minutes. "This equals
approximately 48 hours of ambient drying time," Steiner
said.
A Binks PrepMaster circulates fresh air throughout the
facility. The company also utilizes a regenerative thermal
oxidation unit to filter out fumes, to provide for employees
"an environmentally-friendly" plant, McBroom added.
It is a desire to manufacture well-built products,
combined with the concern for employee welfare, that has
caused A.R.E. to grow from a three-man shop in the 1969 to a
two-facility, 535-employee company with products sold
nationwide by more than 300 independent dealers. (For a
history of the company, see sidebar "Capping Off a
Friendship," page 30).
Country-western star Charlie Daniels was recently signed
on as the company's spokesperson. According to Daniels'
claim, "For quality products and friendly, down home
service, you can't beat A.R.E."
Plastics Machining & Fabricating |
P: (847) 634-4347 F: (847) 634-4379 EMAIL: hfrankurba@aol.com |
P.O. BOX 1400 LINCOLNSHIRE ILLINOIS 60069 |
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