Miscellaneous Functions | Miscellaneous functions for path behavior
10
434
HEIDENHAIN | TNC 320 | ISO Programming User's Manual | 10/2017
Feed rate factor for plunging movements: M103
Standard behavior
The control moves the tool at the last programmed feed rate,
regardless of the direction of traverse.
Behavior with M103
The control reduces the feed rate when the tool moves in the
negative direction of the tool axis. The feed rate for plunging
FZMAX is calculated from the last programmed feed rate FPROG
and a factor F%:
FZMAX = FPROG x F%
Programming M103
If you program M103 in a positioning block, the control continues
the dialog by prompting you for the F factor.
Effect
M103 becomes effective at the start of the block.
To cancel M103, program M103 once again without a factor.
The M103 is also effective with an active tilted working
plane coordinate system. The feed rate reduction is
then effective in the negative direction when moving the
tilted tool axis.
Example
The feed rate for plunging is to be 20% of the feed rate in the plane.
...
Actual contouring feed rate (mm/min):
N170 G01 G41 X+20 Y+20 F500 M103 F20*
500
N180 Y+50*
500
N190 G91 Z-2.5*
100
N200 Y+5 Z-5*
141
N210 X+50*
500
N220 G90 Z+5*
500
To Next Page
Loading...
