GB
- 14 -
6.9 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).
6.10 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 work-
piece. There must be enough distance between
the upper edge of the workpiece and the tip of the
drill bit.
This machine is tted 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).
6.11 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!
6.12 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 speci ed are merely sug-
gested 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
6.13 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.
6.14 Drilling wood
Please note that sawdust must be properly eva-
cuated 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.
Anl_BT_BD_801_E_SPK1.indd 27 02.08.12 11:22
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