HEIDENHAIN CNC PILOT 640 - Undercut G25-Geo

DIN/ISO programming | Form elements of turning contour
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HEIDENHAIN | User's Manual smart.Turn and DIN Programming | 12/2017
Undercut G25–Geo
G25 generates the undercut contours listed below. The undercuts
are only possible in inside contour corners in which the transverse
element is parallel to the X axis. Program G25 after the first
element. You specify the Cut type in parameter H.
Undercut type U (H=4)
Parameter:
H: Cut type U (H = 4)
I: Undercut depth
K: Underc. breadth
R: Radius – Inner radius in both corners of the recess (default: 0)
P: Trav.dpth – Outside Radius or Chamfer (default: 0)
P > 0: Radius of the rounding arc
P < 0: Chamfer width
FP: Do not machine the element (only necessary for TURN PLUS)
1: Yes
BE, BF, BD, BP and BH.
Further information: "Machining attributes for form elements",
Page 246
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
. . .
Undercut DIN 509 E (H=0.5)
Parameter:
H: Cut type DIN 509 E (H = 0 or H = 5)
I: Undercut depth
K: Underc. breadth
R: Radius in the undercut corner
W: Angle – Undercut angle
BE, BF, BD, BP and BH.
Further information: "Machining attributes for form elements",
Page 246
The control uses the diameter to calculate the
parameters that you do not define.
Example: Call G25-Geo DIN 509 E
. . .
N.. G1 Z-15
Longitudinal element
N.. G25 H5
DIN 509 E
N.. G1 X20
Transverse element
. . .