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D.J. Amici Tool,
Inc. is an eight-person shop in Algonquin, Illinois, a northwestern
suburb of Chicago. Recently, the shop adopted a system of modular precision
boring tools and has seen a significant improvement in productivity.
For example, the shop had been using dedicated tooling to bore four
holes 2 inches in diameter and 2 inches deep on one of the steel die
sets Amici machines for its customers. This job had been taking more
than four hours, according to Don J. Amici, the owner.
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| Fernando Collado, shop manager of D.J.
Amici Tool, Inc. shows one of the steel die sets his shop produces
on its CNC vertical machining centers. These die sets feature four
large bores, which are now produced with precision boring tools
instead of dedicated cutters. |
The shop had been running this job at a speed of 150 rpm and feed rate
of 0.5 ipm. With the new tooling, it runs at 1,432 rpm and 5.72 ipm. Increased
productivity is not the only benefit the shop is obtaining from the switch
to precision boring tools. “We have seen a 120-percent improvement in
quality,” says shop manager Fernando Collado. Before trying the new tooling,
Amici craftsmen devoted hours to holding concentricity and achieving repeatability,
Mr. Collado reports. Now, he says, they are getting used to first part
precision and consistent repeatability.
The company prides itself on getting jobs done right and delivering
them on time. Its return rate is close to zero, according to Mr. Collado,
and its on-time rate is 99 percent. Customers include makers of electronic
components, concrete forms, aluminum and vinyl home siding.
Amici Tool has doubled in size over the past two years. The company
originally started in 1978 in the Chicago suburb of Bensenville. First
came a move from a 2,500 square foot shop in nearby Crystal Lake to
a 6,500 square foot facility in Algonquin. Then the company began a
move from manual production to automated CNC equipment. Half the new
shop’s manufacturing area is now devoted to automated production on
three new wire EDMs (electrical discharge machines) and two CNC vertical
machining centers.
Die sets that required a week to machine on the manual side are
now completed in a day, according to Mr. Collado. Amici is running jobs
at speeds and feeds that are much higher than its earlier capabilities.
Mr. Amici says that its move to CNC equipment has enabled his shop to
charge the customer less, build more business and produce a better profit
as a result.
About 20 percent of the company’s machining is boring, a higher
percentage than found in the average shop, Mr. Amici believes. He cites
growth in its major markets with today’s strong economy as a contributor
to his company’s growth, along with the company’s increases in productivity.
Acquiring the modular boring tool system, from BIG Kaiser
Precision Tooling, Inc. (Elk Grove Village, Illinois) is an example
of how the shop is taking full advantage of its investment in CNC equipment.
The shop is currently using the precision boring heads and indexable
drills from this modular system. It plans to try the system’s spade
drills. The system also includes twin cutter heads, single cutter finishing
heads, balanceable and automatic balancing heads for high speed applications,
tapping attachments, chamfering tools, modular toolholder components
and a line of accessories.
Although Amici Tool has been growing, Mr. Amici intends to watch
this growth carefully. “If you get too big, you lose control,” he explains.
He says the industry has seen an increase in the number of smaller tool
and die shops in recent years, in part because creating dies is custom
work. MMS
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