Maintenance And Care - Proxxon MF 70 CNC-ready Manual Del Usuario

5 Fitting the collets (Fig. 5):
Pull out the mains plug prior to any adjusting, setup or
assembly work, as there is otherwise a risk of injury or
possible damage to the device!
Always insert a suitable tool in the collet to tighten the
union nut! Tightening the union nut without an appropriate
shaft will damage the collet!
All operational tools should be clamped as short as
possible! Shafts protruding too far will vibrate and result in
poor milling results.
1. Hold the spindle 1 firmly on the flats with one of the
wrenches 2 provided and release and remove the
union nut 3.
2. Insert the desired collet 4 into the spindle and tighten
the union nut 3 slightly by hand.
3. Insert the desired tool 5 into the collet. Caution:
Ensure that the tool shaft diameter corresponds to the
inside diameter of the collet!
4. Hold the spindle firmly with the wrench and tighten
the union nut firmly with the second wrench.
6 Selecting the spindle speed
The miller is equipped with an electronic speed control
system. This enables the continuous adjustment of the
spindle speed within a range from 5000-20000 rpm to suit
different materials, tool feed speeds, infeeds and milling
cutter diameters. Optimum adaptation of the milling para-
meters is therefore possible to suit all operating conditions
encountered under practical circumstances.
Fundamentally speaking, the following apply:
Higher speeds Smaller milling cutter diameters
High feed
High infeed
Lower speeds Greater milling cutter diameters
Lower feed
Reduced infeed
The table on the front of the miller provides assistance
when selecting the right spindle speed.
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Caution:
7 Working with the miller (Fig. 6)
Wear protective goggles when milling. It is imperative that
the safety instructions included be observed!
The Micro miller MF 70 CNC-ready and compound table KT
70 CNC-ready were designed for fine, precision work.
Decisive milling parameters such as infeed or feed should
therefore be adapted in the software you are using.
Please note that, in addition to negatively influencing the
working results, mechanical or electrical overloading of the
machine also strikingly increases machine wear, particularly
on the drive, bearings and guides.
1. The workpiece 1 should be fixed reliably and safely
using either the clamping jaws 2 provided or another
appropriate clamping medium.
2. Realise the milling process. Ensure that the switch 3 is
in the "On" position. The motor should be activated
manually if the CNC control system does not support
automatic activation and deactivation of the spindle
drive.
3. Set the appropriate speed with the knob 4 if neces-
sary.
4. Ensure that the feed speed and infeed depth are
appropriate! The milling cutter should operate during
counter rotation as illustrated in the diagram in Fig. 7.
This means that the motion of the milling cutter
cutting edge should always be counter to the feed
direction!
8

Maintenance and care

The device is maintenance-free, apart from the necessity
for regular cleaning and, where required, readjustment and
lubrication of the guides. The tasks necessary in this
respect are described below.
8.1 Adjustment of play in the dovetail guides (Fig. 8)
Pull out the miller mains plug prior to any adjusting, setup
or assembly work, as there is otherwise a risk of injury or
possible damage to the device!
Both the miller and the compound table are equipped with
adjustable dovetail guides. These provide an option for
counteracting mechanical wear which occurs naturally
when working with the miller or compound table. The
Caution:
Caution: