HEIDENHAIN CNC Pilot 4290 - Manual (Page 103)

HEIDENHAIN CNC PILOT 4290 91
Caution: Danger of collision!
The thread is generated to the length of
the reference element. Another linear
element without undercut is to be
programmed as overrun.
■ 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..7, 12. For other thread types,
F is calculated from the diameter if it was not programmed (see
”
11.1.5 Thread Pitch”).
P: Thread depth – enter only for Q=12.
K: Run-out length (for threads without undercut) – default: 0
D: Reference point (position of thread run-out) – default: 0
■ D=0: Run-out at end of reference element
■ D=1: Run-out at beginning of reference element
H: Number of thread turns – default: 1
A: Edge angle left – enter only for Q=12.
W: Edge angle right – enter only for Q=12.
R: Thread width – enter only for Q=12.
E: Variable pitch (increases/reduces the pitch per revolution by E) –
default: 0
Bore hole (centric) G49 Geo
Single bore hole with countersink and thread at the center of
rotation (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: Bore hole diameter
P: Depth of hole (excluding point)
W: Point angle – default: 180°
R: Countersinking diameter
U: Countersinking depth
E: Countersinking angle
I: Thread diameter
J: Thread depth
K: Thread runout length
F: Thread pitch
V: Left-hand or right-hand thread - default: 0
■ V=0: Right-hand thread
■ V=1: Left-hand thread
A: Angle (position of bore hole) – default: 0
■ A=0: front end
■ A=180: tail end
O: Centering diameter
■ Program G49 in the FINISHED PART
segment (not in FRONT or REAR SIDE).
■ Machine the G49 hole with G71...G74.
4.5 Geometry Commands