Hurco winmax, Programming Manual

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WinMax Lathe NC Programming
704-0115-307
ISNC G Codes
4-89
G93 - Inverse Time Feedrate
G93 can be specified to change the feedrate as a function of time and distance. If the
time is unchanged but the distance changes, then the actual feedrate will change
proportionally. The time is computed by dividing one by the Inverse Time programmed.
The actual feedrate is the distance divided by the time.
Default—No
Modal—Yes
Cancels:
• G94 - Feed per Minute (default)
• G95 - Feed per Revolution
Format
G93 X____ Z____ F____
The format for Inverse Time is F6.3 (maximum of six digits before the decimal
point and maximum of three digits after the decimal point) and the units are
minutes. Feedrates of up to 999999.999 can be programmed using G93.
Parameters
• F—feedrate as a function of time and distance
Example
G93 G1 X5.0 F10.0
Y7.0 F10.0
Time is 1/10.0min = 0.1min
Actual Feedrate for first line is 5.0in/0.1 min = 50 ipm.
Actual Feedrate for second line is 7.0in/0.1 min = 70 ipm.
The feedrate must be specified for every move.
If the inverse time value falls outside the contouring limits of the
machine, then the control will instead use the minimum or maximum
value.