HEIDENHAIN SW 548328-05 DIN Programming - Manual (Page 315)

HEIDENHAIN MANUALplus 620, CNC PILOT 620/640
315
4.22 Dr
illing cy
cles
Drilling cycle G71
G71 is used for axial and radial bore holes using driven or stationary
tools.
Example: G71
. . .
N1 T5 G97 S1000 G95 F0.2 M3
N2 G0 X0 Z5
N3 G71 Z-25 A5 V2 [drilling]
. . .
Parameters
ID Drilling contour—Name of the hole definition
NS Block number of contour
 Reference to the contour of the hole (G49-Geo, G300-Geo or
G310-Geo)
 No input: Single hole without contour description
XS Starting point of radial hole (diameter value)
ZS Starting point of axial hole
XE End point radial hole (diameter value)
ZE End point of axial hole
K Boring depth (hole depth) (alternative to XE/ZE)
A Drilling lengths (default: 0)
V Bore (through-drilling) variant (feed rate reduction 50%)—
(default: 0)
 0: No feed rate reduction
 1: Feed reduction for through-drilling
 2: Feed reduction for pre-drilling
 3: Feed reduction for pre-drilling and through-drilling
RB Retraction plane (radial holes, holes in the YZ plane:
diameter)—(default: retract to starting position or to safety
clearance)
E Period of dwell for chip breaking at end of hole (in seconds)—
(default: 0)
D Retraction type (default: 0)
 0: Rapid traverse
 1: Feed rate
BS Start element no. (number of the first hole to be machined in a
pattern)
BE End element no. (number of the last hole to be machined in a
pattern)
H (Spindle) Brake off (default: 0)
 0: Spindle brake on
 1: Spindle brake off
 Single hole without contour description: Program XS or
ZS as alternative.
 Hole with contour description: Do not program XS, ZS.
 Hole pattern: NS refers to the hole contour, and not the
definition of the pattern.