HEIDENHAIN TNC 640 (34059x-01) Cycle programming User Manual
Page 115
HEIDENHAIN TNC 640
115
4.8 THREAD DRILLING/MILLING
(Cy
c
le 264, DIN/ISO: G264)
U
Depth at front Q358 (incremental): Distance
between tool tip and the top surface of the workpiece
for countersinking at front. Input range -99999.9999
to 99999.9999
U
Countersinking offset at front Q359 (incremental):
Distance by which the TNC moves the tool center
away from the hole center. Input range 0 to
99999.9999
U
Set-up clearance Q200 (incremental): Distance
between tool tip and workpiece surface. Input range
0 to 99999.9999
U
Workpiece surface coordinate Q203 (absolute):
Coordinate of the workpiece surface. Input range
-99999.9999 to 99999.9999
U
2nd set-up clearance Q204 (incremental): Coordinate
in the spindle axis at which no collision between tool
and workpiece (fixtures) can occur. Input range 0 to
99999.9999
U
Feed rate for plunging Q206: Traversing speed of
the tool during drilling in mm/min. Input range 0 to
99999.999; alternatively FAUTO, FU
U
Feed rate for milling Q207: Traversing speed of the
tool during milling in mm/min. Input range 0 to
99999.9999; alternatively FAUTO
Example: NC blocks
25 CYCL DEF 264 THREAD DRILLNG/MLLNG
Q335=10
;NOMINAL DIAMETER
Q239=+1.5 ;PITCH
Q201=-16
;DEPTH OF THREAD
Q356=-20
;TOTAL HOLE DEPTH
Q253=750
;F PRE-POSITIONING
Q351=+1
;CLIMB OR UP-CUT
Q202=5
;PLUNGING DEPTH
Q258=0.2
;ADVANCED STOP DISTANCE
Q257=5
;DEPTH FOR CHIP BRKNG
Q256=0.2
;DIST FOR CHIP BRKNG
Q358=+0
;DEPTH AT FRONT
Q359=+0
;OFFSET AT FRONT
Q200=2
;SET-UP CLEARANCE
Q203=+30
;SURFACE COORDINATE
Q204=50
;2ND SET-UP CLEARANCE
Q206=150
;FEED RATE FOR PLNGNG
Q207=500
;FEED RATE FOR MILLING
X
Z
Q359
Q359
Q358