Manual Drilling; Micro Down Feed; Automatic Downfeed; Tapping Operation - Promac BX-840VADT Mode D'emploi

In case of danger push the
emergency stop button.
Machine at rest:
If the drill press is not used for a
longer time, pull the mains plug and
protect all blanc surfaces.

6.1 Manual drilling

Set the feed select switch (Z, Fig 3) to
"0" position.
Tighten the downfeed handle lock
knob (E, Fig 6).
Fig 6
Loosen the scale ring lock knob (D).
Set the depth stop (Q) to the desired
position.

6.2 Micro down feed

Set the feed select switch (Z, Fig 3) to
"0" position.
Move the depth stop (Q, Fig 7) to the
highest position.
Fig 7
Loosen the downfeed handle lock
knob (E).
Lower the spindle until the drill bit
touches the workpiece.
Rotate the scale ring to the desired
drill depth and tighten the lock knob
(D).
Engage the feed mechanism by
pushing out the down feed handles (F).
Rotate the micro-feeding hand wheel
(P).
The spindle will feed down until the set
drill depth has been reached.
The feed will disengage and the
spindle will return to the top by spring
force.
6.3 Automatic down feed
Adjust the desired power down feed (Z,
Fig 8).
Fig 8
Loosen the downfeed handle lock
knob (E, Fig 9).
Move the depth stop (Q, Fig 7) to the
highest position.
Fig 9
Lower the spindle until the drill bit
touches the workpiece.
Rotate the scale ring to the desired
drill depth and tighten the lock knob
(D).
Start the machine (X, Fig 5)
7
Engage the feed mechanism by
pushing out the down feed handles (F).
The spindle will feed down
automatically until the drill depth has
been reached.
The auto feed will disengage and the
spindle will return to the top by spring
force.
CAUTION:
Do not let feeding depth exceed
spindle stroke.
If not in use, disengage the power
down feed mechanism.
Set the auto-feed select switch (Z, Fig
3) to "0" position.
Reference values for feed speed
The feed speed depends on the drill
bit diameter and the material of the
workpiece.
The larger the drill bit and the harder
the workpiece, the lower the feed
speed and the lower the spindle rpm.
HSS-drill bit in material steel (C15):
Fig 10

6.4 Tapping operation

For tapping operations the spindle
speed must be below 150 rpm.
The machine setup must be as follows.