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PL92-120QP-0
July 3, 2003
Quackenbush
General Instructions
WARNING:
Read the following instructions before using,
installing or reparing this equipment.
SAFETY INSTRUCTIONS:
Make sure the air supply is disconnected before
performing any service on this equipment.
Before starting the machine on the workstation, check
to assure the nose assembly is properly secured.
OPERATING INSTRUCTIONS:
This Quackenbush positive feed drill is designed to
operate on 90 PSI (6.3 bar) clean, compressed air.
In order to obtain maximum output and correct
automatic cycle, the minimu air pressure must not be
less than 80 PSI (5.6 bar). The inside diameter of the
air supply hose must be 0.314” (8mm).
Install a filter, regulator and lubricator in the
compressed air line. Proper lubrication is important for
the performance and extended life of the equipment.
The filter must be installed at the same height or
higher than the work station.
MAINTENANCE:
To obtain maximum efficiency and output and avoid
costly repairs, a maintenance program must be
implemented, especially after a long idle period.
Use only manufacturer’s replacement parts. The use
of parts from other sources may cause malfunction of
the equipment and nullify the manufacturer’s warranty.
Check the following items on a regular basis:
1) Free speed of the equipment
2) Oil level (daily)
During periodic maintenance, the bearings must be
cleaned and lubricated with a suitable grease (type
FAG Arcanol L74V) or equivalent.
MECHANICAL PRINCIPLE:
The Quackenbush 120QP series Self Feed Drill has a
pneumatically assisted feed, which is set with
accuracy using a hydraulic feed control.
The rotation of the tool holder is transmitted directly by
the air motor to the blades.
The high precision tool holder is guided by several
bearings with inclined contacts. Return to initial
position is done by a spring.
A micromoter stop is used to set accurate drill depth
for countersinking.
CYCLE SEQUENCE:
Connect the machine to the compressed air supply.
Check the stroke and feed settings.
Press the trigger to allow air into the motor. At the
same time, air enters through the inlet at the back of
the handle. This air moves the piston backwards
causing the cylinder and spindle to move forward.
The micromoter stop makes contact with the
compensation limit, at this point the stroke has
completed its maximum displacement. Release the
trigger allowing the machine to return to its initial
position. Repeat this process for the next drilling
operation.
LUBRICATOR:
The lubricator is an air/oil mixture type and has two
separate setting screws. One screw adjusts the
quantity of air and the other adjusts the quantity of oil.
Adjust these screws to achieve the proper mixture of
air and oil to ensure adequate lubrication.
To refill the oil reservoir, remove the protective plug
and use the standard tank filling system, part number
22008152.
MICROMOTER STOP:
The tool stroke can be controlled with the micromoter
stop. In order to do this, simply turn to the desired
value (this device has an accuracy of ± 0.0004”
(0.01mm).
HYDRAULIC FEED CONTROL:
Graduated from 0 to 30, the hydraulic feed control
allows adjustment of the machine feed (30 being
maximum).
Using the rear button, turn to the desired setting. After
selecting the desired feed setting, the rotation of the
button can be locked by tightening the lock screw.
