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4 - Fagor Automation

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1.<br />

MILLING CANNED CYCLES.<br />

General concepts<br />

CNC 8065<br />

(REF: 1209)<br />

·28·<br />

1.1.4 Programming a canned cycle in different planes.<br />

Canned cycles (·M· model)<br />

The programming format is always the same, it does not depend on the work plane. The<br />

following examples show how to drill in both axes of the XY plane in both directions; X axis<br />

as abscissa axis and Y axis as ordinate axis<br />

Function G81 defines the drilling canned cycle. The call parameters have the following<br />

meaning.<br />

X/Y/Z Reference coordinate along the longitudinal axis.<br />

I Drilling depth.<br />

K Dwell at the bottom.<br />

For each type of machine and machining operation the tool's longitudinal axis must be<br />

selected using the #TOO AX instruction so the CNC knows the machining direction.<br />

In the following examples, the part surface has a 0 coordinate, the holes are 8 mm deep and<br />

the reference coordinate is 2 mm above the surface.<br />

Example 1:<br />

G19<br />

#TOOL AX [X+]<br />

G1 X25 F1000 S1000 M3<br />

G81 X2 I-8 K1<br />

Example 2:<br />

G19<br />

#TOOL AX [X-]<br />

G1 X-25 F1000 S1000 M3<br />

G81 X-2 I8 K1

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