The Rotating Multiple Tool Holder; Select Cutting Tool (Fig. 8); Clamping The Cutting Tool (Fig. 9); Restart Protection - Proxxon FD 150/E Manuel D'utilisation

Figure 7 shows the normal position: It is used for the conven-
tional clamping method as shown in Fig. 6 and for clamping e.g.
pipe materials from the inside. The reversed jaws are shown on
the right: This position enables the clamping of workpieces with
a greater outside circumference.
1. Caution: The jaws are numbered! Open the lathe chuck far
enough until the jaws can be removed from the chuck. This
occurs in the sequence 3, 2, and 1.
2. Reverse the jaws and insert No. 3 first into one of the three
guides.
3. Press Jaw No. 3 in the direction of the lathe chuck centre
while turning the chuck in the "Clamping" direction at the
same time.
4. When the threaded screw has grasped Jaw No. 3, Jaw No. 2
must be inserted into the next guide (clockwise).
5. Carry out the procedure with No. 2 and No. 1 as described
previously.
6. Then check if all jaws are in a centred position.
7. If you wish to work with inside jaw chucks again, repeat the
previously described steps, but in reverse order, i.e., insert
Jaws Nos. 1 and 2 first and then No. 3.

The rotating multiple tool holder

Select cutting tool (Fig. 8)

For proper turning, it is imperative that:
• the correct cutting tool was selected for the corresponding
purpose,
• the cutting edge of the cutting tool is sharp,
• the cutting edge of the cutting tool is positioned exactly in the
"Centre"
• the correct rotational speed is used.
Here are the rotational speed types we have put together in our
cutting tool set 24524 (accessories):
Left cutters (a)
• are used to wear off as much swarf in the left machining di-
rection as possible in a short time, without special regard to
the quality of the workpiece surface.
Right cutters (b)
• are used to wear off as much swarf in the right machining di-
rection as possible in a short time, without special regard to
the quality of the workpiece surface.
Roughing tools (c)
• for rough preparatory machining on workpieces. The special
cut of this tool makes it suitable for large material removal
without great requirements regarding surface quality.
Pointed tools (d)
• are used to achieve a clean surface with less chip removal.
Caution!
Parting tools (e)
• for grooving and for separating the workpiece during parting.
Boring cutters (f)
• are used for interior diameter turning.

Clamping the cutting tool (Fig. 9)

Insert the cutting tool as far as possible when clamping. A long
projection causes vibrations, inaccuracies and a poor surface.
Cutting tools with a cross section of up to 6 x 6 mm can be
clamped in the multiple tool holder.
1. Turn out both fastening screws 1 (Fig. 9) until the selected
cutting tool 2 fits into the holding fixture
2. Insert the tool in the tool holder groove and clamp tight with
the screws 1. Caution: Insert the tool as far as possible when
clamping!
3. Move the tip of the tool to the lathe centre of the tailstock and
check the height.
It may be necessary to put, e.g., thin sheets covering the area
underneath the tools in order to compensate the height for dif-
ferent sizes.
The tool holder provides the possibility of clamping two cutting
tools at the same time. This simplifies work, because after ad-
justing the cutting tools between the individual machining stages
for a workpiece, it is only necessary to swivel the tool holder in
order to work with the respectively suitable tool.
To do so, simply loosen the Allen screw 4, swivel the tool hold-
er and then retighten the screw 4. Of course it is possible to gen-
erally regulate the angle of the tool to the workpiece in this man-
ner, if required.

Restart protection

For safety reasons, the machine is equipped with a so-called
restart protection: In case of brief voltage interruptions during
operation, the machine will not restart for safety reasons.
But in this case, the machine can be started normally with the
On button.

Demand-actuated rotational speed

The spindle speed needs to be adjusted according to workpiece
material and diameter: On the one hand, the cutting speed de-
creases with smaller turning radii, which needs to be compen-
sated by a higher rotational speed; on the other hand, the choice
of the correct rotational speed is also dependent to a high de-
gree on the material to be machined. The task here is to find the
right compromise.
Caution!
Caution!
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