12
English
– Insert holder
Insert holders are equipped with a slot.
The insert holders are fitted to the preci-
sion tool at a position along the slot to
suit the machining diameter required.
This is the preliminary adjustment.
Tighten the cap screw
9
applying a
torque of
2 Nm
(17.7 in. lbs.) (figure 4).
d) Preliminary diameter adjustment
Example:
Fine boring tool 248 001 (249 001)
– Boring range: 15.9 to 18.5 mm
(.625" to .728"):
Before fixing takes place, move the
insert holder in the direction indicated by
the arrow (figure 7).
– Boring range:
17,5 to 20,1 mm (.689 to .791
"
):
Before fixing takes place, move the
insert holder in the direction indicated by
the arrow (figure 8).
e) Final diameter setting
The chrome-plated dial
7
gives an exact
reading of the diameter setting. The dis -
tance of the adjustment is limited. Please
follow the sequence of operations for set-
ting the diameter as set out below (figure 9).
To avoid damage to parts, never
use force when carrying out
adjustment!
1. Slacken cap screw
6
(figure 2/11).
2. For the diameter setting, adjust the
tool by turning the dial
7
either
– on a tool setting device or
– by carrying out a trial drilling or
gauge cut on the machine.
One revolution of the dial is equivalent
to the adjusting pin (and hence also
the cutter on the tool) undergoing a
diameter adjustment of 0.2 mm (.01").
One division on the dial corresponds
to a diameter adjustment of 0.01 mm
(.0005"). Rotation clockwise produces
feed-in the diameter (figure 9).
2a) To readjust the tool (i.e. increase
diameter).
–
Readjust the dial by the value requi-
red. The smallest value on the dial
will give a diameter adjustment of
0.01 mm (.0005"). Lower feed-in
values are possible.
or
2b) Setting the tool back (i.e. decrease
diameter).
–
read off the value set on the tool
(figure 10a, example: no. 6 on dial)
– turn the dial back (i.e. anti-clockwise)
approx. half of one full turn. Left turn
direction (figure 10b).
– set the new (smaller) value
(figure 10c, example: no. 5 on dial).
a)
figure 7
figure 8
15
5
0
10
15
5
0
1
0
b)
15
5
0
1
0
c)
15
5
0
10
figure 9
figure 10
Small boring range
Ø 15,9 – 18,5 mm
(.625" – .728")
Wide boring range
Ø 17.5 – 20.1 mm
(.689" – .791")
7
