EINHELL BT-ML 300 Originalbetriebsanleitung Seite 23

Anleitung_BT_ML_300_SPK1__ 31.01.13 13:24 Seite 23
5.4 Fitting / Replacing the clamp jaws
(Fig. 3-9/Item 26)
The clamp jaws (26) are marked with numbers 1 to 3
and must be fitted into the clamp jaw guide (A) in the
three-jaw chuck (27) in the right order.
First fit the jaw chuck wrench (41) into one of the
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clamp screws on the three-jaw chuck (28) and
undo the clamp jaws (26) by turning the jaw chuck
wrench (41) anti-clockwise until you can remove
the clamp jaws (26) (Fig. 3).
Select the clamp jaws you wish to fit (see point
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5.5) and sort them by their numbers (there is a
number code on each of the clamp jaws, starting
with a 1, 2 or 3) (Fig. 4-6).
Guide clamp jaw number 1 into one of the clamp
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jaw guides (A) and push it towards the center of
the three-jaw chuck (27).
Now turn the jaw chuck wrench (41) anti-
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clockwise until clamp jaw number 1 slips slightly
towards the center of the three-jaw chuck (27)
(Fig. 7).
Now fit clamp jaws number 2 and 3 in order
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clockwise into the other two clamp jaw guides (A).
Push all three clamp jaws (26) together and pull
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the three-jaw chuck (27) together by turning the
jaw chuck wrench (41) clockwise. Inside the
three-jaw chuck (27) there is a thread that
engages in the notches on the reverse of the
clamp jaws (26) and thus pulls them together (Fig.
8).
Check that the clamp jaws (26) clamp in the
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center by turning the clamp jaws (26) fully
together using the clamp jaw wrench (41). If the
clamp jaws (26) are not all in the center, they
must be removed and then fitted again (Fig. 9)
5.5 Externally and internally stepped clamp jaws
(Fig. 4 – 6/Item 26)
Workpieces with a diameter of up to approx. 70 mm
are clamped by their external diameter (Fig. 6).
Workpieces with an external diameter of 1.5 to 30 mm
can be clamped using externally stepped clamp jaws
(a) (Fig. 5a).
Workpieces with a bore hole of at least 25 mm can be
clamped by the bore hole using the externally
stepped clamp jaws (a) (Fig. 5b). By replacing the
externally stepped clamp jaws (a) with the internally
stepped clamp jaws (b) it is possible to clamp
workpieces with a diameter of up to 70 mm.
Important:
Workpieces must be clamped a sufficient distance
into the three-jaw chuck (27).
Remove the jaw chuck wrench (41). Make sure that
the workpiece is clamped securely.
5.6 Clamping the turning tool (Fig. 10 – 11)
The turning tool (B) must be clamped in the tool
holder (23) using at least two clamp screws (25).
Clamp the turning tool (B) with as short a length as
possible so as to achieve as short a lever distance (D)
as possible and check that the setting height is
correct. The height of the turning tool (B) can be
adjusted by inserting flat plates (C) of differing
thicknesses. Check the height of the turning tool
against the center of the workpiece using the
centering tip (21) on the tailstock (17). The tool holder
(23) can be swung and adjusted to a different working
position by undoing the clamp lever (24).
This allows up to four turning tools (B) to remain
clamped in the tool holder (23) and you can switch
between them by swinging the tool holder (23).
Important:
The turning tool (B) must be clamped so that its axis
is perpendicular to the workpiece axis.
If it is clamped at a different angle, the turning tool (B)
may be drawn into the workpiece.
5.7 Feed
5.7.1 Selecting the feed direction (Fig. 12)
Select the direction of the leadscrew (13) using the
feed direction lever (30) on the rear of the equipment.
Position 1 top: Feed direction anti-clockwise
Position 2 center: Feed direction off
Position 3 bottom: Feed direction clockwise
5.7.2 Feed speed
Changing the gear wheels (Fig. 13 – 18)
The gear wheels must be selected accordingly to
achieve different feed speeds.
Undo the fastening screws (a) on the gear wheel
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box (29) and remove it (Fig. 13).
Undo the fastening screws (b) on the gear wheel
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shafts and take the gear wheels (c) off the shafts
(Fig. 14).
Undo the fastening nuts on the gear wheel
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compensating holder (Fig. 15/Item d).
Select the gear wheels you need using Figures
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16 – 18. The table (Fig. 18) shows the required
number of teeth (F) on the gear wheels for the
corresponding feed speed in mm per revolution
(E).
Fit the gear wheels on to the appropriate gear
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wheel shafts and secure them using the fastening
screws (Fig. 14/Item b).
If only gear wheels A, B and D are needed for the
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required transmission, you must place the spacer
sleeve (E) shown in Figure 17 before the gear
wheel on shaft III.
GB
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