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The
extrusion tools example illustrates this high-tech machine shop's
quick turnaround and technical capabilities relating to a wide range of
equipment and software. New Jersey Precision Technologies focuses on making
extrusion tools for point-of-purchase
products (price channels, displays, slat walls), window lineals (tracks and
frames extrusion tools), medical applications (catheters), and
various commercial products. Rateled words are plastic extrusion tools
UK extruded mould tool makers. The 25-person shop already has a large stake
in the medical industry, mass producing items such as bone screws, end
effects of catheters, tools to fabricate angioplasty catheter stents, and
other custom parts. One of its specialties is to produce the consistent
high-tolerance diameters of catheter tubes.
In addition to EDM, a Brown & Sharpe digitizing coordinate measuring machine
(CMM) "reverse engineers" a tool or sample plastic extrusion without a
blueprint or CAD file. The customer sends his part; the digitized 3-D
geometry from the CMM goes directly into NJPT's AI-based software and
CAD/CAM system to calculate tool paths to machine an exact duplicate.
The artificial intelligence-based expert system, developed by Tarantino,
controls his EDM machines and machining centers, translating CAD or 3-D
solid modeling data into CNC cutting programs for production. The system
automatically interprets the geometry and textual notations in a customer's
CAD file, eliminating the need for engineers or operators to program machine
tools and continually re-check data. The program automatically checks
errors, and analyzes and identifies any conflicts in data that would affect
machining of the part.
Tooling Increases Extrusion extrusion tools Rates
Tarantino says his tooling designs and manufacturing techniques increase
extrusion feed rates for many materials, such as rigid PVC, polycarbonate,
polystyrene, and acrylic. Tooling designs are matched to the material, the
operating feed rate, and particular extrusion machine. "When a customer
gives us his design for a die, transition and vacuum calibrator for
extruding rigid PVC, we know which features to polish or streamline; we know
the material, the melt point, and where it's going to burn," Tarantino says.
New Jersey Precision Technologies designs dies, transition plates, sizers,
and vacuum calibrators that are smooth and streamlined in transitioning from
round to other 3-D shape, yielding laminar flows of plastic that raise
extrusion rates as much as 25%. Tarantino accomplishes this with a
commercial 3-D solid modeling package from which the AI-based software
translates instructions to NJPT's CNC milling and wire EDM machines. Other
extrusion tooling companies, Tarantino says, sculpt such transitions by hand
with files and chisels, falling short in smoothness and preciseness.
NJPT turns to 3-D solid modeling again in designing co-extrusion tooling.
The solid modeling package allows the engineer to track the introduction of
the second plastic, verify the plastic flow, and eliminate dead zones and
hot spots. Complex co-extrusion tooling is built in three days, whereas
other shops might take three weeks using die grinders or manually controlled
these machines, extrusion tools
says.
The company improves some extruders' cooling rates by building aluminum
vacuum calibrators lined with stainless steel. The coolers gain the wear
resistance of stainless steel plus the heat sink properties of aluminum,
while saving costs for extruders. Conventionally, Tarantino says, vacuum
calibrators are made solely from aluminum, brass, or stainless steel.
Cooling and extrusion rates rise again as extrusion tools cut extra
water cooling channels through aluminum vacuum calibrator blocks. By
contrast, other shops having only one or two wire EDM machines are unable to
free machines for this extra work. Most common words are plastic
extrusion tools UK extruded mould tool makers.
Extrusion tools slots vacuum calibrators by wire EDM, as opposed to
the common practice of cutting them with a band saw. Wire
extrusion tools attains repeatable control of slot width to 0.001
inch, which a band saw can't match. The precise amount of vacuum cools the
plastic for extrusion feed rates to increase.
Electrical discharge extrusion tools, avoiding physical contact
between the wire and part, generates no burrs that can scratch the plastic.
An electrode removes metal using energy generated by sparks between the
electrode and work piece. Wire plastic extrusion tools UK
extruded mould tool makers cuts metal with a thin wire electrode that
follows a programmed path, creating a contour in one continuous operation.
As the wire feeds from reel to reel, sparks of electrical energy
progressively erode the work piece along a path determined by the relative
motion of the extrusion tools axis.
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