Fagor CNC 8070, Programming Manual, Page: 109 / 556

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Programming manual
CNC 8070
T
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CH
NOLOGI
CAL FUNCTI
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Spi
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s
peed
(S
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5.
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V02.0
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5.3.2 Turning speed limit
When working at constant surface speed and because the turning
speed changes with the movement of the perpendicular axis, the
maximum turning speed must be programmed. When the spindle
reaches that speed, it keeps working at constant turning speed.
This limitation is only valid for the master spindle of the channel when
it is working at constant cutting speed. It will be ignored when working
at constant turning speed and the maximum speed allowed will be the
one set for the active gear (range).
G192 Turning speed limit in constant cutting speed mode
The turning speed limit is set by programming function G192 and then
the maximum turning speed for constant surface speed. The
maximum turning speed is always set in RPM.
When executing G192, the CNC limits the maximum turning speed to
the value set with "S". This means that the spindle will not exceed this
speed in G96 even when programming higher speeds. The maximum
speed cannot be exceeded either using "+" and "-" keys of the
Operator Panel.
The following function is oriented to lathe type machines.
i
CSS Constant surface speed.
N Constant turning speed.
Smax Maximum turning speed.
CSS
N
Smax
mm (inch)
G192 S2500 Maximum turning speed = 2500 rpm
G96 S180 Constant surface speed. =180m/min.
···
G97 S1000 M3 Constant turning speed. = 1000RPM
···
G96
···
S230 It activates constant surface speed mode.
The turning speed limit stays active at 2500RPM.