G&J Hall POWERBOR PB32, Инструкция по эксплуатации

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PB32 - Revised 120810
TAPPING
— PB32 COMBI ONLY
The PB32 Combi, in addition to drilling with annular cutters, is designed to allow the
tapping of screw threads.
The tapping capacity of the PB32 Combi is M6 to M12.
This machine has variable speed and both forward and reverse spindle rotation.
Magnetic based drills are normally used for cutting through holes with annular cutters,
the tapping facility of this drill is for tapping through holes.
If tapping of blind holes is required then an automatic reversing tapping chuck should be
used for best results.
The images below show the available Powerbor taps and holders, these have Powerbor
weldon shanks and fit directly into the 3/4” Weldon shank arbor of the machine.
COMBI DRILL/TAP - M6 - M10
(M12 With Annular Drill)
2-IN-1 DRILL TAP - M12
To tap a hole first set up the machine as for drilling with annular cutters in previous
chapters. Ensure the machine is secure before commencing any drilling operation.
Combi Drill/Tap
Drill the hole to the recommended tapping size for the thread to be cut.
Without disengaging the magnet replace the drill with the tap.
Set the spindle speed to the required tapping speed, apply tapping or cutting compound.
Start the drill spindle in the forward direction and feed the tap into the hole until it begins
to cut. Once cutting the tap will feed itself through, only gentle pressure on the feed
handles should be necessary.
Once the tap has threaded through the plate the drill should be stopped immediately.
The drill spindle should then be switched to reverse and the tap can be fed back out of
the hole.