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4 - Fagor Automation

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Canned cycles (·M· model)<br />

1.9 G88. Circular pocket canned cycle<br />

Programming format in Cartesian coordinates:<br />

Parameter definition:<br />

G88 Z I D J B C L H V<br />

Z Reference plane.<br />

In G90, coordinate referred to part zero.<br />

In G91, coordinate referred to starting plane (Zi).<br />

If not programmed, it assumes as reference plane the current position of the tool (Z=Zi).<br />

I Pocket depth.<br />

In G90, coordinate referred to part zero.<br />

In G91, coordinate referred to reference plane (Z).<br />

D Distance between the reference plane and the part surface. If not programmed, it assumes<br />

a value of 1 mm.<br />

J Pocket radius.<br />

The sign indicates the pocket machining direction:<br />

(J+) clockwise, (J-) counterclockwise.<br />

B Depth of pass.<br />

If programmed with a positive sign (B+), the cycle recalculates the step so all the penetrations<br />

are identical with the same value as or smaller than the one programmed.<br />

If programmed with a negative sign (B-), the pocket is machined with the given pass (step)<br />

except the last pass that machines the rest.<br />

1.<br />

MILLING CANNED CYCLES.<br />

G88. Circular pocket canned cycle<br />

CNC 8065<br />

(REF: 1209)<br />

·53·

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