3 G/M Codes
3 - 11
1. The F-value of the cutting speed is given in a G02/G03 command, indicating the
speed along the tangent to the arc; this tangent speed is limited by the arc radius
and the given speed limit.
2. When the calculated tangential cutting speed of the arc is greater than the F value
of the program, the F-value is used as the tangential cutting speed. Otherwise, the
calculated value prevails.
3. The maximum tangential cutting speed is estimated with the following formula:
100085 RFc
mm/min
Where R= Arc radius in mm.
3.5 Dwell , G04
Functions and Purposes:
This function’s purpose is to temporarily hold the machine movement via the program
command, realizing a waiting status, therefore delaying the start of the subsequent block.
Format:
G04 X(P)____
X: Dwell Time. Unit: second. (The X here stands for time instead of position, is
dependent on the setting of “decimal enable” parameter. Ex.: G04 X2, when
“decimal enable” is disabled, the dwell time is 2s; if “decimal enable” is
enabled, the dwell time is 0.002s – i.e. 2ms.)
P: Dwell Time. Unit: millisecond. (Not dependent on the setting of “decimal
enable” parameter.)
Details:
To meet machining requirements, the axial movement may need to be held during the
execution of a program block, which completes before the command for the next block
is executed. This command can be used for this purpose. The G04 function is used for
this purpose.
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