Gude GMD 400 Traducción Del Manual De Instrucciones Original página 21


Now turn the jaw chuck key (41) to the left until the
chuck jaw 1 slips a little bit towards the centre of the
three-jaw chuck (3) (picture 8).

Now fit in chuck jaws 2 and 3 clockwise to the other
two chuck jaw guidings (A).

Press all 3 chuck jaws (4) to each other and clamp the
three-jaw chuck (3) by turning the jaw chuck key (41)
to the right – pictures 17 – 19.
Inside the three-jaw chuck there is a thread interfering
with the notches on the back of the chuck jaws (4), by
which they are clamped together (picture 9).

Check if the clamping of the chuck jaws (4) is centred
by turning the chuck jaws (4) fully to each other using
the jaw chuck key (4). If not all chuck jaws (4) fit tight
to the centre, they must be fitted again (picture 10).
Inner and outer grade of chuck jaws
(picture 4 – 7/pos.4)
Workpieces with a diameter of up to app. 70 mm are
clamped on their outside diameter (picture 7). Workpieces
with an outside diameter of 1.5-30 mm can be clamped
with outwardly graded chuck jaws (a) (picture 5).
Workpieces with boring of at least 25 mm can be clamped
using outwardly graded chuck jaws (a) in boring (picture
6). Workpieces with a diameter of up to app. 70 mm can
be clamped if outwardly graded chuck jaws (a) are
changed for inwardly graded chuck jaws (b).
Caution:
Workpieces must be clamped in a sufficient depth in the
three-jaw chuck (3). Take the jaw chuck key (41) out.
Make sure the workpiece is clamped firmly.
Caution:
Make sure the outer jaws are still held by the spiral thread
and are not screwed out too much!
Lathe tool clamping (pic. 11 - 12)
The lathe tool (B) is clamped by at least two clamping
screws (5) in the tool holder (7). Clamp the lathe tool (B)
as short as possible so that the lever (D) path is also as
short as possible. Make sure the adjustment height is
correct. The height position of the lathe tool (B) is achieved
by putting variously thick flat sheets (C) underneath. The
height position on the centre of the workpiece is checked
based on the centring point (9) on the tailstock (12). The
tool holder (7) can be turned by loosening the clamp lever
(6) and adjusted to any other working position. Up to 4
lathe tools (B) can be clamped in the tool holder (7) at the
same time. The lathe tools can be switched by turning the
tool holder (7).
Caution:
The lathe tool (B) must be clamped with its axis vertically
to the workpiece axis. If clamped sideways, the lathe tool
(B) can be drawn in the workpiece.
Feed direction selection (pic. 13)
The guide screw (16) turning direction can be selected on
the feed direction lever (34) on the back of the machine.
Pos. 1 Up: Left feed direction
Pos. 2 Middle: Feed direction off
Pos. 3 Down: Right feed direction
Feed pace, change of sprocket wheels (pic. 14-19)
To achieve various feed paces, the appropriate sprocket
wheels must be chosen.

Loosen the clamping screws (a) on the sprocket wheel
box (1) and remove it (pic. 14).

Loosen the clamping screws (d) of the shafts of the
gear wheels and remove the sprocket wheels
(c) from the shafts (picture 15).
Loosen the clamping nuts of the balancing holder of
the gear wheels (picture 16/pos. d).

Choose the necessary sprocket wheels as shown in
pictures 17 – 19.
The table (picture 19) shows the necessary number of
teeth (F) of the sprocket wheels for the appropriate
feed in mm for one turning (E).

Fit the gear wheels to the appropriate shafts of the
gear wheels and secure them using the clamping
screws (picture 15/pos. b).

If gear wheels A, B and D are only needed for the
necessary transmission, a clamping sleeve (E) shown
in picture 18 must be fitted on the shaft III before the
gear wheel.

Adjust the balancing holder of the gear wheel and the
shaft of the gear wheels in a way the gear wheels can
be moved with light backlash. Now tighten the
clamping nuts of the balancing holder of the gear
wheels (d) (picture 16).

Important: To switch the machine on, the cover of the
box of the sprocket wheels (picture 14 / pos. 1) must
be fitted.
Tailstock adjusting (pic. 1 and 20)
The tailstock (12) can be moved in the lathe bed (14) back
and forth.

For that purpose, loosen the tailstock clamping
nut (43, key 42) and move the tailstock to the
required position.

Then, tighten the tailstock clamping nut properly
(43, key 42).
Sleeve installation/removal/adjusting (pic. 12-21)
The sleeve (10) holds the centring point (9). It is used to
clamp and check long workpieces. The sleeve (10) can be
adjusted back and forth using the hand crank (13). The
sleeve (10) is clamped or locked in the required position
using the clamp lever (11). The rear side of the centring
point (9) is conical and is held by locking in in the sleeve
(10). To remove the centring point (9), loosen the chucking
lever (11) and use the hand crank (13) to adjust the sleeve
(10) fully to the back. By this, the centring point (9) is
pushed out of its clamping and can be taken out. To use it,
insert the centring point (9) in the sleeve (10). When
chucked, the workpiece is automatically clamped in the
sleeve (10).
Instead of the centring point (9), a bore in the appropriate
cone can also be inserted in the sleeve (10) for example
as preparation/roughening for inner turning. There is a
scale on the sleeve (10) showing how deep it is being
bored to the workpiece.
Three-jaw chuck protective cover (pic. 2 / pos.36)
The three-jaw chuck protective cover (36) is used for the
protection of the user. It must always be folded down when
operating the machine. When the protective cover (36) is
folded up, the machine cannot be switched on, as the
safety switch (picture 2 / pos. 31) in the back is not
controlled.
Cranks for transverse and manual run (pic. 1 / pos. 21,
resp. 17)
When turning, the lathe tool is guided along the workpiece
using cranks for transverse and manual running.
On both cranks there are indexing wheels with a scale that
are adjusted to 0 when the lathe tool touches the
workpiece. By this, the depth of turnings removal can be
measured.
To adjust the indexing wheels with a scale to 0, loosen the
handrail bolts in the indexing wheels, turn them to 0 and
tighten the handrail bolts again.
Operating the machine
Switching the machine on and off (picture 22)
Switching the machine on
Please follow this order when switching the lathe on!

First, fold down the protective cover (36) above the
three-jaw chuck (3) (three-jaw chuck protective
cover).

The speed controller (2) must first be in the zero
position (marking in the very bottom) whenever the
machine is being switched on or when changing the
speed direction.

Now choose the desired turning direction on the
turning direction selector (27) (L=left running / R= right
running).

Make sure the safety switch (Not-Aus) is not pressed.

Now the machine can be switched on by controlling
the speed selector (28).