Contour Definition Programming - Siemens SINUMERIK 802D sl Programming And Operating Manual

Rounding RND or RNDM
A circle contour element can be inserted with tangential connection between the linear and
circle contours in any combination.
Figure 10-31 Examples for inserting roundings
Programming examples for rounding
N5 F...
N10 G1 X... RND=4
N20 X... Z...
...
N50 G1 X... FRCM= ... RNDM=2.5
N60 G3 X... Z...
N70 G1 X... Z... RNDM=0
...
10.5.3

Contour definition programming

Functionality
If the end points for the contour are not directly specified in the machining drawing, it is also
possible to use an angle specification ANG=... to determine the straight line. In a contour
corner, you can insert the elements chamfer or rounding. The respective instruction CHR= ...
or RND=... is written in the block, which leads to the corner.
The blueprint programming can be used in blocks with G0 or G1 (linear contours).
Theoretically, any number of straight line blocks can be connected and a rounding or a
chamfer can be inserted between them. Every straight line must be clearly identified by point
values and/or angle values.
Surface grinding
Programming and Operating Manual, 11/2012, 6FC5398-5CP10-3BA0
; Insert 1 rounding with radius 4 mm, feedrate F
; Modal rounding, radius 2.5 mm with
; special feedrate FRCM (modal)
; continue inserting this rounding - to N70
; Modal rounding OFF
Programming
10.5 Special functions
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