Lathe Elements And Their Operation; Tailstock (Fig. 3); Working With The Tailstock .................................18 Repair And Maintenance; Upper Carriage (Fig. 5) - Proxxon FD 150/E Manual

When lifting the machine, make sure that the plastic hood 1 (Fig.
2 a) of the gear case is closed. Otherwise, close the hood and tight-
en the knurled screw 2, or else the cap could break as a result.
1. To set up the lathe, remove it from the packaging and set it
up on a straight and level surface. The setup site must be sta-
ble and free from vibrations. Secure stability must be guar-
anteed!
2. Please note: The machine may only be operated if screwed
securely to the surface! Drill holes (Item 3) in the angle
flanges of the base end caps have been provided for this pur-
pose. Please use screws with a 4 mm diameter.
3. In order to access the screw hole, it is important to fold up
the plastic hood 1 of the gear case on the headstock side. To
do so, simply release the knurled screw 2 (Fig. 2a) and swing
open the plastic hood.

Lathe elements and their operation

Tailstock (Fig. 3):

The tailstock 1 on the right side of the machine base contains
quill 2. The travelling lathe centre 3 is inserted into the inside
cone contained within. This helps support and stabilise longer
workpieces.
When the chuck projection is greater than the 3-fold workpiece
diameter, the workpiece should be generally held at the right
end by the tailstock with the lathe centre.
Ideally, the centre should engage with a so-called centring hole.
This can be established using the drill chuck available as acces-
sory. The procedure is described in detail later on.
The location tapers must always be absolutely clean.
Dirt and particularly metal chips impair accuracy and can render
the quill and cone useless.
Working with the tailstock
1. To insert, e.g., the lathe centre 3, extend the quill 2 by turn-
ing the handwheel 4 approx. 10 mm.
2. Firmly insert the lathe centre with cone by hand into the quill.
The cone is seated tightly and cannot be pulled out from the
front.
3. To push the tailstock 1 approximately up to the workpiece, re-
lease the clamping lever 5 (Fig. 3), push the tailstock on the
base guide to the required position and retighten the clamp-
ing lever 5. The lathe centre can be positioned on the work-
piece face side with regulated light pressure by turning the
handwheel 4. The quill should be clamped to this position by
tightening the knurled screw 6 .
4. To release the cone of the travelling centre (or another utilised
tool), turn the handwheel 4 to turn the quill 2 as far as pos-
- 18 -
Caution!
Caution!
Caution!
sible into the tailstock after the work. The cone will release
and can be removed.
Cross slide (Fig. 4)
The cross slide 1 enables the cutting tool 3 to move vertically to
the rotary axis of the workpiece by turning the handwheel 2.
This permits the infeed during work, i.e. to regulate the rate of
cut.
Caution: The handwheels of the machine are equipped with ro-
tating scale rings: To traverse the carriage by a defined amount,
the scale ring can be set to 0. The exact infeed can be read on
the scale while operating the handwheel.
Also, this enables the machining a frontal plane face of a work-
piece (face turning) or the so-called "parting" of a workpiece.
This is understood as parting beyond the rotary axis so that the
workpiece is detached.

Working with the cross slide

1. The cross slide (together with the upper carriage) can be
pushed along the guide of the machine bed into the pro-
cessing position at the workpiece. To do so, release clamp-
ing lever 4, move the carriage to the required position and
retighten the clamping lever 4.
2. Regulate the position of the cutting tool 3 by turning the
handwheel 2 before and during work.

Upper carriage (Fig. 5)

The upper carriage 1 enables the direct guiding and traversing
of the tool holder including the cutting tool preferably in the lon-
gitudinal direction.
In addition, the upper carriage in our machine can be swivelled:
This makes it possible to manufacture not just cylindrical work-
pieces by traversing the cutting tool parallel to the longitudinal
axis of the machine (longitudinal turning): Cone-shaped work-
pieces or tapered sections can also be turned if the upper car-
riage is swivelled somewhat.
We have attached an angle scale to help set the angle of the
cones to be manufactured.
The traverse path of the carriage on the precision dovetail guide
is 60 mm.

Working with the upper carriage

When delivered, the upper carriage 1 is set exactly to =0°, i.e. for
(cylindrical) straight turning.
1. Move the cutting tool 3 radially to the required position by
turning the handwheel 2.
2. Switch on the machine. Caution: make sure that the chuck
guard 6 is in the bottom position!