Adjusting The Milling Cutter: Adjustable Groove Cutter (Optional Accessories); Indexable Cutting Insert Change "Adjustable Groove Cutter - Mafell NFU 50 Manual De Instrucciones Original


Insert the cylinder head screw 15 and the flange
33 and tighten clockwise with hexagon screw
driver 23 (at least 20 Nm).

Caution: After the check and tool change,
remove position indicator 29 and the hexagon
screw driver 23 from the tool.

Close the retractable saw guard 28 and press
down the locking lever 19 (Fig. 2).
4.6 Adjusting the milling cutter: Adjustable
groove cutter (optional accessories)
The adjustable groove cutter 30 (Fig. 5) is an
adjustable groove cutter with indexable cutting
inserts, which can be adjusted to milling widths
between 22 and 40 mm. Different spacers are
included with the adjustable groove cutter. These can
be used to realise different intermediate widths.
Follow the procedure below:

First compile the required adjustable groove
cutter width with the enclosed spacers (the
adjustable groove cutter without spacers has a
groove width of 22 mm).

Place the compiled spacer packet onto the pins
in the rear part of the adjustable groove cutter
(side without labelling).

Place the spacers that are not required onto the
front part of the adjustable groove cutter. Then
join the front part of the adjustable groove cutter
30 (Fig. 5) and the inserted spacer packet.

Now fasten both parts of the adjustable groove
cutter with the front flange of the adjustable
groove cutter 33 (Fig. 5) and mount the entire
adjustable groove cutter onto the drive flange of
the NFU50.
The adjustment range specified on
the adjustable groove cutter may
on no account be exceeded.
Ensure that all the enclosed
spacers are fitted at all times.
4.7 Indexable cutting insert change "adjustable
groove cutter"
Danger
Always pull the power plug before
making changes or adjustments.
Install and remove the cutters in
accordance with the instructions in
the operating manual. Utmost
caution is mandatory!
Ensure clean clamping surfaces.
Observe the specified tightening
torques! The clamping screws must
be tightened only with the tools
provided or with a tool of the same
dimensions. No striking tools,
levers, extensions or other tools
may be used.
All blades must always be fitted in
order to prevent imbalance.
The adjustable groove cutter 30 (Fig. 5) is equipped
with 12 carbide indexable cutting inserts 32.
Resharpening is not possible. When blades are blunt,
the carbide indexable cutting inserts are turned or
replaced.
Only the screws and indexable cutting inserts
provided for this purpose by MAFELL may be used.
Follow the procedure below:

Remove the tool from the machine (see 4.5 Tool
change of the adjustable groove cutter (special
accessories), page 28).

Loosen the countersunk screws 34 (Fig. 5) on
the tool with the wrench included in the supply.

Clean all parts and cutter chambers of the tool.

Turn the carbide indexable cutting inserts or
replace them with new carbide indexable cutting
inserts after they have been turned three times.

Fasten the turned or new indexable cutting
inserts with the countersunk screws and
retighten the screws with the corresponding
wrench (Fig. 7) with 4 Nm.
The two parts have been inserted correctly if the rear
of a cutter edge is resting against the carrier body
and the countersunk screw can be screwed in that far
that the surface of the countersunk screw is located
-29-