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Hoffmann PU2-TAB is a routing machine equipped with two carbide
router bits to rout two dovetail slots per miter. The router
bits are installed in high-speed gear heads, which are connected
to separate motors with toothed drive belts. The supplied
45 degree fence plate, which is guided in a keyway in the
machine table, is used to accurately position the material
on the table. The location of the dovetail slots for the Hoffmann
Keys is adjusted by simply moving this fence plate and by
setting the spacing between the key slots.
The distance between the router bit
centers can be adjusted by the operator from 1 1/4" -
4" = 32-100mm. The spacing is displayed on a mechanical
counter with 1/10mm accuracy. A hand wheel on the side of
the machine is used to set the desired distance, a locking
lever locks the adjustment securely in place.
The machine is equipped with a pneumatic
foot switch to start the routing process. Upon depressing
the switch, the routing sequence is initiated:
- pneumatic clamp secures workpiece
on machine table
- router heads advance until the pre-set
height position is reached
- router heads return to base position
- pneumatic clamp releases work piece
Output is approx. 16 routing strokes
per minute, which translates into 2 completely processed rectangular
frames. These numbers include material handling, but obviously
depend on routing depth, feed speed, material flow and operator
performance as well.
Flow control valves on the main pneumatic
cylinder allow the operator to adjust the upward and downward
feed rate independently, depending on the material being processed.
A heavy-duty aluminum table provides
a large work surface, the steel cabinet has a 4" diameter
dust collection port on its backside for dust free operation.
The supplied router bits are solid
tungsten carbide, made to exacting specifications. Depending
on the routing depth and the material to be routed, the useable
cutter life is approx. 10,000 strokes.
Every machine is shipped with a tool
kit and set-up jig, which allows a router, bit change in only
minutes. Diamond cutters are also available.
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