Hoffmann PP2-TFB Pneumatic Dovetail Routing Machine

Product Description

Overview:
The Hoffmann PP2-TFB (Twin Fixed Belt) freestanding, automatic dovetail routing machine is equipped with four high-speed router motors, located at the center of the machine. The motors use toothed timing belts to drive two separate high-speed gear heads. 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.

Highlights:
Large work surface is designed to be at a comfortable working height, the router motors are controlled by a contactor and a 4” dust collection port is located at the back for connection to a central dust collection system.  

Belt-driven gear head and motor detail (adjustable PU2-TAB model shown)

Operation:
The keyway location is adjusted by positioning the guided center fence plate on the machine table; the keyway length (routing height) is adjusted by setting a height-stop rod to the desired setting. The distance between the router bits (or keyways) is fixed and cannot be adjusted.

Pressing the pneumatic foot pedal starts the machining cycle:
> Pneumatic clamp secures work-piece and motor is switched on
> Router heads advance until pre-set height is reached
> Router heads return to home position and motor is switched off
> Pneumatic clamp releases work-piece

Output is approx. 16 routing strokes per minute, which translates into 4 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 4" diameter dust collection port in the back is used to connect a central dust collection system.

The supplied router bit is 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, often times even more. Every machine is shipped with a tool kit and set-up jig, which allows a router bit change in only minutes.

Standard Features:
Hoffmann Dovetail Routing Machine PP2-TFB, freestanding floor model, ready for operation, with lockable Emergency-Stop, with air regulator-lubricator assembly, with W-2 solid carbide router bits installed, standard 45 degree center fence plate and square stop, toolkit and manual.

Technical data
Power Supply                  120 volts –  18 Amps
Air Supply                        90 psi - approx. 0.1 cubic foot/cycle
Motors                              4 x 530 watt
Motor speed                    35,000 rpm at idle
Collet size                       1/4”
Router Bit Spacing          1 1/4" (32mm) minimum - set to customer's specification
Operation                         pneumatic – dual cylinder design
Max. routing height          4” – 101mm
Max. material height         5 3/4” – 146mm
Installed router bits           W-2, solid carbide
Available router bits          W-0, W-1, W-2, W-3 and W-4
Dimensions W/D/H           31 1/2” x 29 1/2” x 59”
Weight                              262lbs.

Warranty:
One year on parts and workmanship. Complete Hoffmann Warranty Terms apply.