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Enhanced Level Commands

4.1 Program support functions (1)

04.07

4-103

SINUMERIK 802D sl/840D/840D sl/840Di/840Di sl/810D ISO Milling (PGM) -- 04.07 Edition

4.1.4 Drilling cycle, spot drilling (G81)

Center drilling and spot drilling can be carried out by means of this cycle. After re-

aching drilling depth Z retraction movement is immediatly performed in rapid tra-

verse rate.

Format

G81 X... Y... R... F... K... ;

X,Y: Hole position

Z: Distance from point R to the bottom of the hole

R: Distance from the initial level to R level

F: Cutting feedrate

K: Number of repeats

G81 (G98) G81 (G99)

Point Z

Initial level

Point R

Point Z

Point R level

Point R

Fig. 4-9 Drilling cycle, spot drilling (G81)

Axis switching

Before the drilling axis can be changed, the canned cycle must be canceled.

Drilling

Drilling is not carried out in a block that does not contain X, Y, Z, R, or any additio-

nal axes.

Cancel

G codes of group 01 (G00 to G03) and G76 must not be specified within a single

block. Otherwise, G76 is canceled.

Siemens SINUMERIK 802D sl Programming Manual

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