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Programming manual
CNC 8055
CNC 8055i
3.
AXES AND COORDINATE SYSTEMS
·M· & ·EN· MODELS
SOFT: V02.2X
Rotary axes
3.6 Rotary axes
The types of rotary axes available are:
Normal rotary axis.
Positioning-only rotary axis.
Rotary HIRTH axis.
Each one of them can be divided into:
Rollover When it is displayed between 0º and 360º.
Non Rollover When it may be displayed between -99999º and 99999º.
They are all programmed in degrees. Therefore, their readings are not affected by the inch/mm
conversion.
Normal rotary axes
They can interpolate with linear axes.
Movement: In G00 and G01.
Rollover axis programming:
G90 The sign indicates the turning direction and the target position (between 0 and
359.9999).
G91 The sign indicates the turning direction. If the programmed movement exceeds
360º, the axis will rotate more than one turn before positioning at the desired point.
Non-rollover axis programming.
In G90 and G91 like a linear axis.
Positioning-only rotary axis
They cannot be interpolated with linear axes.
Movement: Always in G00 and they do not admit tool radius compensation (G41, G42).
Rollover axis programming:
G90 Always positive and in the shortest direction. End coordinate between 0 and
359.9999.
G91 The sign indicates the turning direction. If the programmed movement exceeds
360º, the axis will rotate more than one turn before positioning at the desired point.
Non-rollover axis programming.
In G90 and G91 like a linear axis.
Rotary Hirth axis
They work like the positioning-only axis except that they do not admit decimal position values
(coordinates).
More than one hirth axis can be used, but they can only be moved one at a time.
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