Fagor CNC 8070, Programming Manual

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Programming manual
CNC 8070
STATEMENTS AND
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15.
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15.1.18 Polynomial interpolation
The CNC permits interpolating straight lines and arcs and the #POLY
instruction may be used to interpolate complex curves, like a parabola.
#POLY Polynomial interpolation
This type of interpolation lets machining a curve given by a polynomial
of up to a 4th degree where the interpolation parameter is the length
of the arc.
The programming format is:
#POLY [<eje>[a,b,c,d,e]...SP<sp> EP<ep>
O n e m ust de fi ne a l l th e a xes to be i nte r po l ate d an d the i r
corresponding coefficients next to them.
a + b·<axis> + c·<axis>
2
+ d·<axis>
3
+ e·<axis>
4
Parameter Meaning
<axis> Axis to interpolate.
a,b,c,d,e Coefficients of the polynomial.
<sp> Initial parameter of the interpolation.
<ep> Final parameter of the interpolation.
Programming a parabola. The polynomial may be represented as follows:
Coefficients of the X axis: [0,60,0,0,0]
Coefficients of the Y axis: [1,0,3,0,0]
Starting parameter: 0
End parameter:
60
G0 X0 Y0 Z1 F1000
G1
#POLY [X[0,60,0,0,0] Y[1,0,3,0,0] SP0 EP60]
M30