Rounding, Chamfer - Siemens SINUMERIK 802D sl Programming And Operating Manual

3.5.2

Rounding, chamfer

Functionality
You can insert the chamfer (CHF or CHR) or rounding (RND) elements into a contour corner.
If you wish to round several contour corners sequentially in the same manner, use the "Mo-
dal rounding" (RNDM) command.
You can program the feedrate for the chamfer/rounding with FRC=... (blockwise) or FRCM=
... (modal). If FRC/FRCM is not programmed, the normal feedrate F is applied.
Programming
CHF=...
CHR=...
RND=...
RNDM=...
FRC=...
FRCM=...
Information
The appropriate instruction CHF= ... or CHR=... or RND=... or RNDM=... is written in the
block with axis movements leading to the corner.
The programmed value for chamfer and rounding is automatically reduced if the contour
length of an involved block is insufficient.
No chamfer/rounding is inserted if
● more than three blocks in the connection are programmed that do not contain any infor-
● or a plane change is carried out.
F, FRC, FRCM are not active when a chamfer is traversed with G0.
If the feedrate F is active for chamfer/rounding, it is by default the value from the block which
leads away from the corner. Other settings can be configured via machine data.
Chamfer CHF or CHR
A linear contour element is inserted between linear and circle contours in any combination.
The edge is broken.
Grinding
Programming and Operating manual, 06/2006, 6FC5398-4CP10-0BA0
mation for traversing in the plane,
; Insert chamfer, value: Length of chamfer
; Insert chamfer, value: Side length of the chamfer
; Insert rounding, value: Radius of chamfer
; Modal rounding:
; Value >0: Radius of rounding, modal rounding ON
: This rounding is inserted in all contour corners.
: Value = 0: Modal rounding OFF...
; Non-modal feedrate for chamfer/rounding ,
Value = 0, feedrate in mm/min (G94) or mm/rev (G95)
; Modal feedrate for chamfer/rounding:
; value >0: Feedrate in mm/min (G94) or mm/rev. (G95),
; modal feedrate for chamfer/rounding ON
; value =0: Modal feedrate for chamfer/rounding OFF
; The feedrate F applies for the chamfer/rounding.
Programming
3.5 Special functions
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