HEIDENHAIN CNC Pilot 4290 V7.1 - Manual (Page 156)

156
4.7 Cont
our F
o
rm
Elements
Example: G24-Geo
Undercut contour G25-Geo
G25 generates the following undercut contours in paraxial inside
contour corners. Program G25 after the first axis-parallel element. You
specify the undercut type in parameter H.
Undercut type U (H=4)
. . .
FERTIGTEIL [FINISHED PART]
N1 G0 X40 Z0
N2 G1 X40 B-1.5 Starting point for thread
N3 G24 F2 I1.5 K6 Z-30 Thread with undercut
N4 G1 X50 Next transverse element
N5 G1 Z-40
. . .
Example: Call G25-Geo type U
. . .
N.. G1 Z-15 [longitudinal element]
N.. G25 H4 I2 K4 R0.4 P-0.5 [Type U]
N.. G1 X20 [transverse element]
. . .
Parameters
H Undercut type U: H=4
I Undercut depth (radius)
K Width of undercut
R Inside radius in both corners of recess (default: 0)
P Outside radius/chamfer (default: 0)
„ P>0: Radius of the rounding arc
„ P<0: Chamfer width