Feed; Accessories; Repair And Maintenance; Changing The Belts - Proxxon FF 400 Manual De Instrucciones

In doing so, it is possible to work with the hand wheel or
the drill feed. The scale rings of the hand wheel and the
drill feed can both be "zeroed" for this purpose. To do
this, it is useful, for example, to rest the milling cutter
gently on the workpiece before (!) switching on the ma-
chine and then setting the appropriate scale ring to
zero. When doing so, it should be noted that, in the
case of the drill feed scale ring, a screw has to be slak-
kened as described in "Spindle height adjustment". The
scale ring for the hand wheel is simply rotated.
1. Fix the workpiece securely using clamping jaws,
vice or chuck.
2. Set the required spindle height roughly by means of
the hand wheel 1 (Fig. 9). For this purpose, clam-
ping screw 3 must be released whereas clamping
screw 4 must be tight!
3. Make sure that the milling cutter does not touch the
workpiece.
4. Make sure that the correct spindle speed has
been set.
5. Select the direction of rotation. (See section below).
6. Set milling depth. This works best with the hand
wheel 1 (Fig. 9). In this case, clamping screw 3 is
released and clamping screw 4 is tight. After adjust-
ment, it is essential that both clamping screws
3 and 4 are kept tight.
7. Alternatively, you can also adjust the milling depth
with the drill lever 2 (Fig. 9). In this case, clamping
screw 3 is tightened and, after moving the drill lever
2 to the required depth, this is fixed by clamping the
quill by tightening the clamping screw 4.
8. Switch on the milling machine by means of the
switch 3 (Fig. 1).
9. Work with an appropriate feed.

Feed:

When milling, ensure that the direction of feed always
opposes the direction of rotation of the milling cutter
(Fig. 16).
Caution!
Always operate the feed manually! When using the mil-
ling machine in combination with the PD 400 lathe, the
table feed must not take place using the automatic feed
of the lathe. Risk of injury and damage!

Accessories

Commercially available milling cutters with a maximum
shaft diameter of 12 mm and a tool diameter of max. 40
mm can be used. For an optimum working result, it is
necessary to adjust the milling machine and the milling
parameters (feed, depth of cut, speed) to the working
conditions and to choose these accordingly. In addition,
the table on the V-belt cover should, of course, be taken
into account.
We can recommend the milling cutters from our acces-
sory range such as the end-milling cutter set (2-5 mm)
24610 or, for larger jobs, the end-milling cutter set
(6-10 mm), Item No. 24620.
Gear wheels with modulus m = 0.5 can be milled with
the tooth profile cutters and the indexing attachment
from our accessory range; tooth numbers from 12-54
can be realised by this means.
Further suitable PROXXON-quality milling and drilling
tools from our extensive range can be obtained from
your dealer. He will be able to recommend a suitable
PROXXON product for your specific application.
A practical accessory for the precise adjustment of the
spindle height is the fine feed unit (Item No. 24 254),
which can easily be fitted retrospectively. Here, you have
the option of making particularly fine adjustments to the
machining depth by means of a hand wheel (1 gradua-
tion = 0.025 mm).

Repair and maintenance

Caution!
Unplug from the mains before carrying out any repair
and maintenance work!

Changing the belts

If the belts should be worn, you can change these your-
self. Replacement belts can be obtained from the
PROXXON Central Service Department (address on
the back of this manual).
1. Slacken the knurled screw 1 (Fig. 13) and hinge up
the housing cover.
- 17 -