Siemens SINUMERIK 828D Programming Manual page 276

Motion commands
9.13 Tapping with compensating chuck (G63)
Meaning
G63
X... Y... Z...
Note
G63
After a block with programmed
etc.) is reactivated.
Feedrate
Note
The programmed feed must match the ratio of the speed to the thread lead of the tap.
Thumb rule:
Feedrate F in mm/min = spindle speed S in rpm * thread lead in mm/rev
Not only the feedrate, but also the spindle speed override switch are set to 100% with
Example
In this example, an M5 thread is to be drilled. The lead of an M5 thread is 0.8 (according to
the table).
With a selected speed of 200 rpm, the feed F = 160 mm/min.
Program code
N10 G1 X0 Y0 Z2 S200 F1000 M3
N20 G63 Z-50 F160
N30 G63 Z3 M4
N40 M30
276
: Tapping with compensating chuck
: Drilling depth (end point) in Cartesian coordinates
is non-modal.
, the last interpolation command programmed (
G63
Comment
; Approach starting point, activate spindle.
; Tapping, drilling depth 50.
; Retraction, programmed reversal of direction.
; End of program.
Programming Manual, 07/2010, 6FC5398-1BP40-0BA0
, , ,
G0 G1 G2
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G63
Fundamentals