Optimum 333 8160, Руководство по эксплуатации

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Version 1.0.4 - 2020-12-15 32 Translation of original operating manual
MH25SV EN
MH
25
SV
_GB_
4.
fm
4.12 Selecting the speed
The correct speed is an important factor for milling. The speed determines the cutting speed by
which the cutting edges cut the material. By selecting the correct cutting speed, the service life
of the tool is increased and the working result is optimized.
The optimum cutting speed largely depends on the material of the workpiece and the material
the tool is made of. With tools (milling cutters) made of hard metal or ceramic insert it is possi-
ble to work with higher speeds than with tools made of high-alloy high speed steel (HSS). You
will achieve the optimal cutting speed by selecting the correct rotation speed.
In order to determine the correct cutting speed for your tool and for the material to be cut you
may refer to the following standard values or a table reference book (e.g. Tabellenbuch Metall,
Europa Lehrmittel, ISBN 3808517220).
The required speed is calculated as follows:
n = speed in min
-1
(revolutions per minute)
V = cutting speed in m/min (meter per minute)
d = tool diameter in m (Meter)
4.12.1 Standard values for cutting speeds
[ m/min ] with high-speed steel and hard metal in upcut milling.
The results are the following standard values for speeds depending on the
milling cutter diameter, cutter type and material.
n
V

d

------------
=
Tool Steel Grey cast iron
Al
alloy
hardened
Plain mill and side milling cutters [ m/min ] 10 - 25 10 - 22 150 - 350
Relieved form cutters [ m/min ] 15 - 24 10 - 20 150 - 250
Cutter head with SS [ m/min ] 15 - 30 12 - 25 200 - 300
Cutter head with HM [ m/min ] 100 - 200 30 - 100 300 - 400
Tool diameter
[ mm ] shell end mill and
side milling cutters
Steel
10 - 25 m/min
Grey cast iron
10 - 22 m/min
Al alloy
cured 150 - 350
m/min
Speed [
min
-1
]
35 91 - 227 91 - 200 1365 - 3185
40 80 - 199 80 - 175 1195 - 2790
45 71 - 177 71 - 156 1062 - 2470
50 64 - 159 64 - 140 955 - 2230
55 58 - 145 58 - 127 870 - 2027
60 53 - 133 53 - 117 795 - 1860
65 49 - 122 49 - 108 735 - 1715