Drilling Cycle, Spot Drilling (G81) - Siemens SINUMERIK 802D sl Programming Manual

04.07
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
Fig. 4-9
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 AG 2007 All rights reserved
SINUMERIK 802D sl/840D/840D sl/840Di/840Di sl/810D ISO Milling (PGM) -- 04.07 Edition
G81 (G98)
Initial level
Point R
Point Z
Drilling cycle, spot drilling (G81)
Enhanced Level Commands
4.1 Program support functions (1)
G81 (G99)
Point R
Point R level
Point Z
4-103