HEIDENHAIN TNC 640 (34059x-01) Cycle programming - Manual (Page 362)

362 Cycles: Turning
13.24 CONT
OUR-P
A
RALLEL THREAD (Cy
c
le 830)
U Type of infeed Q468: Define the type of infeed:
0: Constant chip cross section (the infeed decreases
with the depth)
1: Constant plunging depth
U Starting angle Q470: Angle of the turning spindle at
which the thread start is to be made.
U Number of starts Q475: Number of thread starts
U Number of air cuts Q476: Number of air cuts without
infeed at finished thread depth
Example: NC blocks
9 CYCL DEF 14.0 CONTOUR GEOMETRY
10 CYCL DEF 14.1 CONTOUR LABEL2
11 CYCL DEF 830 CONTOUR-PARALLEL THREAD
Q471=+0 ;THREAD POSITION
Q461=+0 ;THREAD ORIENTATION
Q460=+2 ;SET-UP CLEARANCE
Q472=+2 ;PITCH
Q473=+0 ;THREAD DEPTH
Q474=+0 ;THREAD RUN-OUT
Q465=+4 ;APPROACH PATH
Q466=+4 ;OVERRUN PATH
Q453=+0.5 ;MAX. CUTTING DEPTH
Q467=+30 ;ANGLE OF INFEED
Q468=+0 ;TYPE OF INFEED
Q470=+0 ;STARTING ANGLE
Q475=+30 ;NUMBER OF STARTS
Q476=+30 ;NUMBER OF AIR CUTS
12 L X+80 Y+0 Z+2 FMAX M303
13 CYCL CALL
14 M30
15 LBL 2
16 L X+60 Z+0
17 L X+70 Z-30
18 RND R60
19 L Z-45
20 LBL 0