Gude GMD 400 Traducción Del Manual De Instrucciones Original página 22

Switching the machine off
To switch the machine off, turn the speed controller (28) to
the "zero position".
Emergency stop
To switch the machine quickly and easily off, e.g. in case
of emergency, press the safety switch (Not-Aus) (pic. 22 /
pos. 26). To put the machine into operation again, the
safety switch (Not-Aus) must be released.
Caution:
Before any change of the turning direction, it is necessary
to wait until the machine fully stops as, otherwise, the
machine could get damaged! To prevent machine
overloading, changing down to lower speed before
switching the machine on is necessary for a work with high
speed. When the machine gets overloaded or blocked, the
control is automatically switched off.
Unplug the machine if it is not going to be used
for a long time or before any adjusting or servicing.
Speed adjusting (picture 22 – 23)
Machine speed can smoothly be adjusted using the speed
controller (28). The speed range can be preset on the
speed switch (32).
Speed switch in the "Hase" (Fast) position:
Revolutions: 0-2,500 per min-1
Speed switch in the "Schildkröte" (Slow) position:
Revolutions: 0-1,100 per min-1
Cooling
Heat by friction is produced on the lathe tool edge when
turning. To increase the life of the lathe tool and improve
the cut profile, the lathe tool must be cooled during work.
For this, use the attached oil bottle (38) and the
environment-friendly water-soluble boring emulsion.
Turning
General

Clamp the lathe tool firmly in the tool holder (7) (see
Lathe tool clamping)

Clamp the workpiece firmly and as deep in the three-
jaw chuck (3) as possible.

Check whether the workpiece is running cylindrically.

Make sure the feed is deactivated (except for turning
of threads).

Switch the machine on (see Switching the machine
on and off).
Slide turning (pic. 1, 24 – 25)
The lathe tool moves in parallel to the workpiece axis
during slide turning.

For slide turning from right to the left, first turn the bed
slide (24) using the hand wheel for sliding traverse (25)
so much to the left and the knife slide (23) using the
crank for manual run (17) so much to the right that the
travel path of the knife slide (23) is enough for the
entire machining length.

Put the feed direction lever (33) to position 2, the feed
mechanism will get deactivated and fixate the bed
slide (24) using the feed blocking lever (19).

Turn the crank for traverse motion (21) to go with the
surfacing slide (22) so much to the back that the lathe
tool does not touch the workpiece circumference.

Now use the crank for manual run (17) to adjust the
knife slide (23) so that the lathe tool point is above the
longest diameter of the workpiece.

Turn the crank for traverse motion to go slowly with the
surfacing slide (22) to the workpiece until the lathe tool
slightly touches the workpiece surface.

This is now the initial position for machining the
outside diameter of your workpiece.
The scale division on the crank for traverse motion (8)
corresponds to 0.05 mm of the workpiece diameter
(cut depth 0.025 mm).

Optional automatic feed during slide turning by
connecting the feed blocking lever (19).
Caution:
Before switching the machine on, make sure the feed
direction lever (33) is in position 2 and the feed mechanism
deactivated (see Feed direction selection).
Transverse turning (pic. 1, 26)
Transverse turning is done similarly as the slide turning.
The lathe tool moves to the centre of the workpiece axis
during the transverse turning.
During face machining, the main edge of the lathe tool
must be adjusted precisely to the workpiece centre to
make sure there is no extension in the centre of the
workpiece. Adjust the lathe tool according to the centring
point (9).
The workpiece is turned from outside to the inside during
the transverse turning with a bent lathe tool or facing lathe
tool while it is from inside out during transverse turning
with an angle-cutting tool or side lathe tool.
Inner turning
Inner turning of boring is done similarly as the transverse
and slide turning. As in most cases the lathe tool cannot be
seen in the boring operation, a special care must be
exercised. For inner turning, a borer for workpiece
preboring instead of the centring point (9) is clamped (see
Sleeve installation/removal/adjusting).
Recessing and parting
When recessing and parting, the lathe tool moves to the
centre of the workpiece axis.
A recessing tool is used for recessing while a parting tool
is used for parting.
Caution:
During slide, transverse, inner turning, recessing and
parting make sure the lathe tool is precisely adjusted to the
centre.
Turning of conical surfaces (pic. 27 - 28)
Conical surfaces are turned by adjusting the knife slide
(23). After loosening the adjusting screws (A), the knife
slide turns around its axis (pic. 28).
Cone adjustment is done according to the scale for turning
of conical surfaces (20).
The adjusting screws (A) must be tightened again after
correct adjustment of the tool-holding slide (pic. 29).
Turning of threads (pic. 29)
Threads are turned using a special tool for cutting threads.
The tool is clamped perpendicularly to the workpiece axis.
This can best be done using the lathe tool gauge (pic. 30 /
pos. A) When turning threads, feed is provided by the
guide screw (16) and it must correspond to the thread
lead. For this purpose, the feed pace is adjusted by the
correct selection of the sprocket wheels (see Feed pace,
change of sprocket wheels).
Caution:
Work at low speed and with good lubrication when cutting
a thread. The feed blocking lever (19) must not get opened
and the workpiece must not be taken out of the jaw chuck
when cutting a thread and between cutting operations
.
when turning a thread
Cleaning
Cleaning, servicing and ordering of spare parts
Disconnect the plug before any cleaning.
Cleaning

We recommend cleaning the machine after every use.

Remove turnings using a brush.

Remove any dirt, remains of lubricants and oil using a
cotton cloth.

Never use compressed air for cleaning.

After cleaning, apply an acid-free lubricant on the
metal parts.
Changing the drive belt (pic. 30 - 33)
The drive belt is a part subject to quick wear. It must be
changed if necessary. First, remove the sprocket wheel
box cover (1) and the sprocket wheels (see Feed pace,
change of sprocket wheels). Now loosen both holding