WABECO D4000, Operating Instructions Manual

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4. Specifications regarding the machine
4.6 Revolution selection
Select the spindle revolutions according to the material type of work piece diameter:
Small work piece diameter
⇒
Relatively high revolutions
Large work piece diameter
⇒
Low revolutions
Revolutions and diameter give the cutting speed.
In the event of a specified cutting speed, the required spindle revolutions can be calculated as follows:
Application example:
Thus, an aluminium work piece with a
Ø
of 20 mm is to be turned with a cutting speed of 100 m/min.
Now, select from the potential revolutions, the one that comes closest to the ideal of 1592 rpm.
4.7 Diagram for reading off the revolutions
4000
3000
2000
1000
800
600
400
200
100
80
60
40
20
10
120
2
4
6 8 10
20
40 60 80 100 160 200
V
m/min
2500
1600
1250
800
500
250
mm
n 1/min
Revolutions
Cutting speed (V) x 1000
Work piece diameter (d) x 3.14
100 x 1,000
20 x 3.14
100.000
62.8
1592 rpm =
=