HEIDENHAIN SW 68894x-02 - Manual (Page 267)

HEIDENHAIN CNC PILOT 640 267
4.6
Thr
ead
and
under
cut
cy
cles
API thread
Call the thread-cutting menu
Select API thread
 On: Internal thread
 Off: External thread
This cycle cuts a single or multi-start API external or internal thread.
The depth of thread decreases at the overrun at the end of thread.
Cycle parameters
X, Z
Starting point
X1, Z1 Starting point of thread
X2, Z2 End point of thread
F1 Thread pitch (= feed rate)
D Number of thread starts (default: 1 single-start thread)
U Thread depth – No input:
 External thread: U=0.6134*F1
 Internal thread: U=–0.5413*F1
I First cutting depth
 I
Reduction of cutting depth down to J.
 I=U: One cut
 No input: Calculation from U and F1
WE Run-out angle (range: 0° < WE < 90°)
W Taper angle (range: –60° < A < 60°)
G47 Safety clearance (see page 128)
G14 Tool change point (see page 128)
T Turret pocket number
ID Tool ID number
S Spindle speed/cutting speed
GV Type of infeed
 0: Constant mach. X-section
 1: Constant infeed
 2: W/ remaining cutting (with distribution of remaining
cuts)
 3: W/o remaining cutting (without distribution of
remaining cuts)
 4: Same as MANUALplus 4110
 5: Constant infeed (same as 4290)
 6: Constant with distribute. (same as 4290)