Siemens SINUMERIK 828D Programming Manual page 283

Significance
CHF=...
CHR=...
RND=...
RNDM=...
FRC=...
FRCM=...
Note
Chamfering/Rounding
If the values programmed for chamfering (CHF/CHR) or rounding (RND/RNDM) are too high
for the contour elements involved, chamfering or rounding will automatically be reduced to
an appropriate value.
No chamfering/rounding is performed if:
• No straight or circular contour is available in the plane
• A movement takes place outside the plane
• The plane is changed
• A number of blocks specified in the machine data not to contain any information about
Fundamentals
Programming Manual, 07/2010, 6FC5398-1BP40-0BA0
: Chamfer the contour corner
:
<value>
: Chamfer the contour corner
:
<value>
: Round the contour corner
:
<value>
: Modal rounding (rounding multiple contour corners in the same way one after
the other)
:
<value>
: Non-modal feedrate for chamfering/rounding
:
<value>
: Modal feedrate for chamfering/rounding
:
<value>
traversing (e.g., only command outputs) is exceeded
9.15 Chamfer, rounding (CHF, CHR, RND, RNDM, FRC, FRCM)
Length of the chamfer (unit corresponding to G70/G71)
Width of the chamfer in the original direction of motion (unit
corresponding to G70/G71)
Radius of the rounding (unit corresponding to G70/G71)
Radius of the roundings (unit corresponding to G70/G71)
Modal rounding is deactivated with
Feedrate in mm/min (with active G94) or mm/rev (with active
G95)
Feedrate in mm/min (with active G94) or mm/rev (with active
G95)
deactivates modal feedrate for chamfering/rounding and
FRCM=0
activates the feedrate programmed under F.
Motion commands
.
RNDM=0
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