
1.1.1.2 Restrictions for tool center point control for 5-axis machining
(1) Common restrictions
- Deceleration at a corner
When tool center point control is in use, the controlled point may move on a curved
line even if a straight-line command is issued. Some commands may cause the tool
center point to make a sharp turn.
For this reason, the tool may be decelerated if a low value is set as a permissible
speed difference (parameter No. 8410) or a permissible acceleration (parameter No.
8470) for a corner.
- Reset
When Tool Center Point control for 5-axis machining mode(G43.4) is reseted , the
mode is always canceled (G49).
- Restriction of commands
The following functions can be used but the state can not be changed in tool center
point control mode.
・Inch/metric conversion (An alarm(P/S5000) is issued if the state is changed by
G20 or G21)
・Mirror image (Do not change the state of the signal).
・Tool life management function
The tool length compensation use the amount of the tool specified by tool life
management function. The command for the tool life management function have
to command before tool axis direction tool length compensation mode.
・F1 digit feed (Feedrate can not be changed by using the manual pulse
generator.)
- Unusable functions
Do not use the following functions in tool center point control mode.
- Custom macro B
- Macro executor (Execution macro)
- The following group 01 G functions
Spiral interpolation, Conical interpolation -G02,G03
Exponential interpolation -G02.3,G03.3
- High speed machining -G05 (G05P10000 and G05P0 is
excluded))
- AI countor control / AI NANO countor control -G05.1Q1, G05.1Q0
- Hypothetical axis interpolation -G07
- Cylindrical interpolation -G07.1
A-78927E
Edit
Apprv.
Desig.
Sheet
Title
Draw
No.
Date
Design
Descri
tion
Date
FANUC Series 16i –MB,18i –MB5
Inclined Rotary Axis Control
Sep.13.2002
02 Dec.27.2002 T.Horie All revision
13/27
Sheet
T.Horie H.Kouzai
- Advanced preview control -G08 (Please use AI High
Precision Contour Control))