18
GB
7.7. Setting the angle of the drill table (Fig. 21-22)
Slacken the carriage bolt (26) under the drill
table (4).
Set the drill table (4) to the desired angle.
Tighten down the carriage bolt (26) in order to
lock the drill table (4) into this position.
7.8. Setting the height of the drill table
(Fig. 21; 23)
Slacken the tightening screw (37).
Set the drill table to the desired position with the
help of the hand crank (27).
Screw the tightening screw (37) back down
again.
7.9 Drill table and roll base (Fig. 24)
Slacken the clamping screw (29) to turn the drill
table (4).
Slacken the thumb screws (21) to extend the roll
base (3).
7.10 Clamping the workpiece (Fig. 25)
As a general rule, use a machine vice or another
suitable clamping device to secure a workpiece in
position. Never hold the workpiece in place with
your hand! When drilling, the workpiece should be
able to travel on the drill table (4) for self-centering
purposes. Ensure that the workpiece cannot rotate.
This is best achieved by placing the workpiece
/machine vice on a sturdy block. Caution! Sheet
metal parts must be clamped in to prevent them from
being torn up. Properly set the height and angle of
the drill table for each workpiece. There must be
enough distance between the upper edge of the
workpiece and the tip of the drill bit.
This machine is fitted with an adjustable stop (30).
Proceed as follows to position it:
Move the sliders on the stop (30) into two of the
four guide slots in the drill table (4).
Set the stop (30) to the desired position.
Fasten the stop (30) to the drill table using both
spindle screws (32).
Now slacken the thumb screw (33) on the angle
piece (34) and position the angle piece (34) such
that the workpiece can be placed against the
stop (30) and the angle piece (34).
7.11 Using the laser (Fig. 11; 18/Item 36)
To switch on: Move the ON/OFF switch (20) to the
“I” position to switch on the laser. Two laser lines are
projected on the workpiece and intersect at the
center of the drill tip contact point.
To switch off: Move the ON/OFF switch (20) to the
“0” position.
Setting the laser: Slacken the screws (41) to adjust
the laser. Retighten the screws after you have made
the adjustment. Important! Never look directly into
the laser beam!
7.12 Working speeds
Ensure that you drill at the proper speed. Drill speed
is dependent on the diameter of the drill bit and the
material in question.
The table below acts as a guide for selecting the
proper speed for various materials.
Note: The drill speeds specified are merely
suggested values.
Drill bit Ø Cast iron Steel Iron Aluminium Bronze
3 2550 1600 2230 9500 8000
4 1900 1200 1680 7200 6000
5 1530 955 1340 5700 4800
6 1270 800 1100 4800 4000
7 1090 680 960 4100 3400
8 960 600 840 3600 3000
9 850 530 740 3200 2650
10 765 480 670 2860 2400
11 700 435 610 2600 2170
12 640 400 560 2400 2000
13 590 370 515 2200 1840
14 545 340 480 2000 1700
16 480 300 420 1800 1500
18 425 265 370 1600 1300
20 380 240 335 1400 1200
22 350 220 305 1300 1100
25 305 190 270 1150 950
7.13 Countersinking and center-drilling
With this table drill, you can also countersink and
center-drill. Please observe that countersinking
should be performed at the lowest speed, while a
high speed is required for center-drilling.
7.14 Drilling wood
Please note that sawdust must be properly
evacuated when working with wood, as it can pose a
health hazard. Ensure that you wear a suitable dust
mask when performing work that generates dust.
Anleitung_BT_BD_801_E_SPK1:_ 09.05.2008 12:29 Uhr Seite 18
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