HEIDENHAIN SW 54843x-02 DIN Programming - Manual (Page 208)

208 DIN programming
4.4 Cont
our f
o
rm
elements
Thread (general) G37-Geo
G37 defines the different types of thread. Multi-start threads and
concatenated threads are possible. Threads are concatenated by
programming several G01/G34 blocks after each other.
Example: G37
. . .
FINISHED PART
N1 G0 X0 Z0
N2 G1 X20 BR-2
N3 G1 Z-30
N4 G37 Q2 [metric ISO]
N5 G25 H7 I1.7 K7
N6 G1 X30 BR-1.5
N7 G1 Z-40
N8 G37 F1.5 [metric ISO fine-pitch thread]
N9 G25 H7 FP1.5
N10 G1 X40
N11 G1 Z-60
. . .
Parameters
Q
Type of thread (default: 1)
 1: Metric ISO fine-pitch thread (DIN 13 Part 2, Series 1)
 2. Metric ISO thread (DIN 13 Part 1, Series 1)
 3: Metric ISO tapered thread (DIN 158)
 4: Metric ISO tapered fine-pitch thread (DIN 158)
 5: Metric ISO trapezoid thread (DIN 103 Part 2, Series 1)
 6: Flat metric trapezoid thread (DIN 380 Part 2, Series 1)
 7: Metric buttress thread (DIN 513 Part 2, Series 1)
 8: Cylindrical round thread (DIN 405 Part 1, Series 1)
 9: Cylindrical Whitworth thread (DIN 11)
 10: Tapered Whitworth thread (DIN 2999)
 11: Whitworth pipe thread (DIN 259)
 12: Nonstandard thread
 13: UNC US coarse thread
 14: UNF US fine-pitch thread
 15: UNEF US extra-fine-pitch thread
 16: NPT US taper pipe thread
 17: NPTF US taper dryseal pipe thread
 18: NPSC US cylindrical pipe thread with lubricant
 19: NPFS US cylindrical pipe thread without lubricant
F Thread pitch
 Required for Q=1, 3 to 7, 12.
 For other thread types, F is calculated from the diameter if it
was not programmed.
P Thread depth—enter only for Q=12
K Run-out length for threads without undercut (default: 0)
D Reference point (default: 0)
 0: Runout of thread at the end of the reference element
 1: Runout of thread at the beginning of the reference element
H Number of thread turns (default: 1)
A Thread angle at left—enter only for Q=12
W Thread angle at right—enter only for Q=12
R Thread width—enter only for Q=12
E Variable pitch (default: 0)
Increase/decrease the pitch per revolution by E.
V Direction of thread
 0: Right-hand thread
 1: Left-hand thread