Longitudinal Turning; Face Turning; Taper Turning; Cutting Off A Work Piece - Proxxon PD 250/E Manual De Instrucciones

spindle blocking during operation, please switch off the
machine immediately and configure the feed and infeed for fur-
ther machining to avoid overloading of the machine.
Before inserting the mains plug, please check if the information
on the rating plate matches the local conditions of your mains
supply. If they do not match, then damage or hazards during
work could be result!
Always wear hearing protection and protective goggles while
working!
Avoid abnormal body posture! Make sure you stand securely
and can keep your balance.
Please comply with the following when commissioning and
working with the PD 250/E: Your machine is equipped with an
automatic safety shutdown and can only be operated when the
chuck guard is folded down! As soon as the chuck guard is
folded up during operation, the motor will shut off automatical-
ly! Only work with a folded down chuck guard! If the guard is
defective, the machine may no longer be operated!
Avoid unnatural body positions. Ensure that you are standing in
a safe position and keep your balance.
1. Set selection switch 2 (Fig. 2) to "0" position.
2. Switch on main switch 1. The function display should now
illuminate.
3. Turn the selection switch 2 to the right for normal turning.
4. Turn the selection switch to the left for anti-clockwise
rotation.
Important
Only switch on when the machine is stationary.
5. When you have finished working, switch off the machine
again using the main switch. Only then is the machine com-
pletely disconnected from the mains.

Longitudinal turning

Turning parallel to the rotational axis and machining cylindrical
objects are the main uses of a lathe.
1. Select the spindle speed according to the table on your
lathe.
2. Adjust the required speed by shifting the belt in the drive
gearbox (see previous section).
3. Clamp a right side tool 2 (Fig. 14) in the tool holder (see pre-
vious section).
4. Switch off the automatic feed 3.
5. Move the support from the right to the left of the work piece.
6. Adjust the cutting depth using the cross-slide 1.
Caution!
Caution!
Caution!
Caution!
Note:
Important
Before switching on the machine, manually check whether the
spindle, chuck and work piece are running free.
Do not allow the support or turning tool to collide with the
lathe chuck.
7. Switch on the machine (clockwise rotation).
8. Manually feed or switch on the automatic feed 3, do not
overload the machine.
If the top slide is not necessary, it is advisable to clamp it with
the screw 4 (Fig. 14). The turning performance is improved by
eliminating play.

Face turning

This method of working is used to turn off the face of a work
piece.
1. Adjust the right side tool by approx. 2° to 3° (Fig. 15).
2. Move the cross-slide from outside inwards (to the centre)
with the turning tool.
Important
The cutting speed from outside inwards differs considerably
for work pieces with larger diameters. Therefore, push the
cross-slide slowly and sensitively.

Taper turning

The top slide (Fig. 16) is equipped with a scale and can be swiv-
elled by 45° on either side of zero for taper turning. To do so,
release fastening screw 1, adjust top slide and then re-tighten.

Cutting off a work piece

1. Clamp the cut-off tool at right angles in the tool holder.
Important
Give the cut-off tool as short an overhang as possible (half of
the diameter of the work piece + 1 mm). Similarly, give the
work piece as short an overhang as possible.
Note the exact centre height of the cut-off tool. Work at low
speeds and cool blade as often as possible.
2. Sensitively move the cross-slide from outside inwards (to
the centre) with the turning tool.
Machining longer work pieces with tail-
stock and centre
Important
If the chuck projection is greater than three times the diame-
ter of the work piece, the work piece must be held at the right
end by the tailstock and centre.
Note:
Note:
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