HEIDENHAIN CNC Pilot 4290 V7.1 - Manual (Page 160)

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4.7 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.
Parameters
Q Type of thread (default: 1)
„ Q=1: Metric ISO fine-pitch thread (DIN 13 Part 2, Series 1)
„ Q=2: Metric ISO thread (DIN 13 Part 1, Series 1)
„ Q=3: Metric ISO tapered thread (DIN 158)
„ Q=4: Metric ISO tapered fine-pitch thread (DIN 158)
„ Q=5: Metric ISO trapezoid thread (DIN 103 Part 2, Series 1)
„ Q=6: Flat metric trapezoid thread (DIN 380 Part 2, Series 1)
„ Q=7: Metric buttress thread (DIN 513 Part 2, Series 1)
„ Q=8: Cylindrical round thread (DIN 405 Part 1, Series 1)
„ Q=9: Cylindrical Whitworth thread (DIN 11)
„ Q=10: Tapered Whitworth thread (DIN 2999)
„ Q=11: Whitworth pipe thread (DIN 259)
„ Q=12: Nonstandard thread
„ Q=13: UNC US coarse thread
„ Q=14: UNF US fine-pitch thread
„ Q=15: UNEF US extra-fine-pitch thread
„ Q=16: NPT US taper pipe thread
„ Q=17: NPTF US taper dryseal pipe thread
„ Q=18: NPSC US cylindrical pipe thread with lubricant
„ Q=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)
„ D=0: Runout of thread at the end of the reference element
„ D=1: Runout of thread at the beginning of the reference
element
H Number of thread turns (default: 1)
A Edge angle at left—enter only for Q=12
W Edge 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.