Programming manual
120
CNC 8070
6.
TOOL PATH CONTROL
Rígid tapping (G63)
(SOFT V02.0X)
116
Multiple-entry threads
With this type of threading, it is possible to make threads with several
entry points. The positioning for each entry must be defined before
each threading operation.
Spindle speed behavior
Depending on where the turning speed is defined, the operation will
be:
• If the threading speed is defined while G63 is active, the speed will
remain active until G63 is canceled, and it will then restore the
speed that was active before activating the threading operation.
• If no particular threading speed is defined, it will be executed at the
speed active at the time.
The spindle turning direction is determined by the sign of the
programmed "S" speed ignoring the active M3, M4, M5 or M19
functions. Programming any of these functions will cancel G63.
Considerations
While rigid tapping, the feedrate may be varied between 0% and 200%
using the feedrate override switch on the CNC's operator panel of via
PLC. The CNC will adapt the spindle speed in order to keep the
interpolation between the axis and the spindle.
Properties of the functions
Function G63 is modal and incompatible with G00, G01, G02, G03
and G33.
On power-up, after an M02 or M30 and after an EMERGENCY or a
RESET, the CNC assumes function G00 or G01 as set by the machine
manufacturer [G.M.P. "IMOVE"].
...
G90 G01 X0 Y0 Z0 F150
M19 S0 (First entry at 0º)
G63 Z-50 S150 (Tapping)
G63 Z0 S-150 (Withdrawal)
M19 S120 (Second entry at 120º)
G63 Z-50 S150
G63 Z0 S-150
M19 S240 (Third entry at 240º)
G63 Z-50 S150
G63 Z0 S-150
...
3-entry thread, 50mm deep and 1mm pitch.
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