HEIDENHAIN CNC Pilot 4290 - Manual (Page 102)

4 DIN PLUS 90
Thread (general) G37-Geo
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 taper 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 metr. 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
Thread (standard) G34-Geo
A simple or successive outside or inside thread (metric ISO fine-pitch
thread DIN 13 Series 1). The CNC PILOT calculates all the required
values.
Threads are interlinked by programming several G01/G34 blocks after
each other.
Parameters
F:
Thread pitch – no value: Pitch from the standard table
Undercut form K (H=9)
Parameters
I:
Undercut depth
R: Undercut radius – no value: The circular element is not machined
W: Undercut angle
A: Angle to linear axis – default: 45°
■ You need to program a linear contour
element as a reference before G34 or in
the NC block containing G34.
■ The thread is machined with G31.
■ Program a linear contour element as a
reference before G37.
■ The thread is machined with G31.
■ For standardized threads, the CNC PI-
LOT defines the parameters P, R, A and W
(see ”
11.1.4 Thread Parameters”).
■ Use Q=12 if you wish to use individual
parameters.
Continued
4.5 Geometry Commands