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7
Technical manual
Noise emission values in accordance with the
DIN EN 60745
-
1 standard:
Vibrations:
Note:
The measured values listed above
depend on the materials and
operating procedures used and may
therefore be exceeded under other
operating conditions.
Using the machine to create bevels with a width
greater than that permitted will result in a
disproportionally large reduction in the machine
’
s
on
-
time and the service life of the indexable carbide
inserts. The vibration and noise emission values
will increase accordingly.
To prevent overloading the machine and to avoid
operator fatigue it is very important to observe the
maximum power
-
on periods especially when
machining wide bevels or high
-
strength materials.
Value
Un
-
certainty
Noise emission
[dB (A)]
Emission sound pressure
level
(in idle mode)
L
pA
87
3
Peak emission sound pres-
sure level at workplace
(during milling operation)
L
pGpeak
103
3
Sound power level
L
WA
98
3
Total vibration value
(tri
-
axial vector sum)
Appropriate to
DIN EN 60745:
Measured vibration
emission value
ah = 6,0 m/s²
Work process:
-
30° milling head
-
5 mm bevel width
(C) in 12 mm
steel sheet S 355
Uncertainty
K = 1,5 m/s²
Power
-
on time (POT):
To avoid damaging the machine, it is essential to
be monitor how long the machine has been
operating continuously
(‘
power
-
on time
’).
All electric brushed motors generate large amounts of
heat in the rotor and stator. Although the machine is
fitted with a fan cooler that dissipates the heat
produced, if the machine is subjected to extreme
loads (e.g. milling large bevels, very hard or tough
materials) and/or is run continuously for a long period
of time, the cooling system may not be able to cope
with the amount of heat generated. If the operator
continues to use the machine, the rotor (armature)
may overheat to such an extent that the winding
insulation melts causing a short circuit.
(C=bevel width, POT=power
-
on time)
The power
-
on time is always expressed as a
percentage of one hour.
Example: If the power
-
on time is specified as 50 %,
then you can use the machine to mill bevels for a
maximum of 30 min. in an hour and must then leave
the machine to cool for 30 min.. If the machine is
subjected to heavy loads, the power
-
on time might be
20 %, which means it can be used for 12 min. in any
hour and must be left to cool for 48 min.. Before
completely switching off the machine, we recommend
running the machine for one or two minutes in idle
mode (unloaded) so that fan can continue to draw
cool air through the machine.
Do not overload the machine!
The machine can become overloaded if, for example,
it continues to be used even though the bevel being
cut is too large for the material being milled, or if the
cutting inserts have become blunt and therefore
unable to penetrate the material. Such conditions can
lead to large machine vibrations or even machine
breakdown if the armature in the motor is bent to
such an extent that the rotor and stator rub against
each other, overloading the windings and blowing the
motor. To prevent this sort of damage when milling
large bevels and/or hard materials, never try to
machine the bevel in a single pass, always use
multiple passes, and do not forget to change the
carbide inserts before they become blunt or worn.
Total vibration value
(tri
-
axial vector sum)
Appropriate to
DIN EN 60745:
Measured vibration
emission value
ah = 6,0 m/s²
Work process:
-
30° milling head
-
8 mm bevel width
(C) in 12 mm
steel sheet S 355
Uncertainty
K = 1,5 m/s²
Material strength
C
POT
max.
max.
Aluminium, copper, brass
20mm
40
-
80%
Steel up to 400 N/mm²
15mm
30
-
60%
Steel up to 600 N/mm²
15mm
20
-
50%
Steel up to 900 N/mm²
15mm
20
-
40%
Stainless steel
8mm
20
-
40%