HEIDENHAIN SW 54843x-03 DIN Programming - Manual (Page 219)

HEIDENHAIN MANUALplus 620, CNC PILOT 640 219
4.4 Cont
our f
o
rm
elements
Bore hole (centric) G49-Geo
G49 defines a single hole with countersink and thread at the turning
center (front or rear face). The G49 hole is a form element, not part of
the contour.
Parameters
Z
Starting position for hole (reference point)
B Hole diameter
P Depth of hole (excluding point)
W Point angle (default: 180°)
R Sinking diameter
U Sinking depth
E Sinking angle
I Thread diameter
J Thread depth
K Thread chamfer
F Thread pitch
V Left-hand or right-hand thread (default: 0)
 0: Right-hand thread
 1: Left-hand thread
A Angle corresponding to the position of the hole (default: 0)
 A=0°: Front face
 A=180°: Rear face
O Centering diameter
 Program G49 in the FINISHED section, not in AUXILIARY
CONTOUR
, FACE or REAR.
 Machine the G49 hole with G71...G74.