HEIDENHAIN TNC 320 (34055x-06) Cycle programming - Manual (Page 104)

Fixed Cycles: Tapping / Thread Milling
4.7 THREAD MILLING/COUNTERSINKING (Cycle 263, DIN/ISO:G263)
4
104
TNC 320 | User's Manual Cycle Programming | 5/2013
Climb or up-cut Q351: Type of milling operation
with M3
+1 = climb
–1 = up-cut
Set-up clearance Q200 (incremental): Distance
between tool tip and workpiece surface. Input range
0 to 99999.9999
Set-up clearance to the side Q357 (incremental):
Distance between tool tooth and the wall of the
hole. Input range 0 to 99999.9999
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
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
Coordinate of workpiece surface Q203 (absolute):
Coordinate of the workpiece surface. Input range
-99999.9999 to 99999.9999
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
Feed rate for countersinking Q254: Traversing
speed of the tool during countersinking in mm/min.
Input range 0 to 99999.9999 alternatively
FAUTO,
FU
Feed rate for milling Q207: Traversing speed of
the tool in mm/min while milling. Input range 0 to
99999.999 alternatively
FAUTO
NC blocks
25 CYCL DEF 263 THREAD MLLNG/
CNTSNKG
Q335=10 ;NOMINAL DIAMETER
Q239=+1.5 ;THREAD PITCH
Q201=-16 ;THREAD DEPTH
Q356=-20 ;COUNTERSINKING
DEPTH
Q253=750 ;F PRE-POSITIONING
Q351=+1 ;CLIMB OR UP-CUT
Q200=2 ;SET-UP CLEARANCE
Q357=0.2 ;CLEARANCE TO SIDE
Q358=+0 ;DEPTH AT FRONT
Q359=+0 ;OFFSET AT FRONT
Q203=+30 ;SURFACE COORDINATE
Q204=50 ;2ND SET-UP
CLEARANCE
Q254=150 ;F COUNTERBORING
Q207=500 ;FEED RATE FOR
MILLING