HEIDENHAIN TNC 320 - Page 113

THREAD MILLING/COUNTERSINKING (Cycle 263, DIN/ISO: G263) 4.7
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HEIDENHAIN | TNC 320 | User’s manual for cycle programming | 9/2016
113
Q203 Workpiece surface coordinate? (absolute):
Coordinate of the workpiece surface. Input range
-99999.9999 to 99999.9999
Q204 2nd set-up clearance? (incremental):
Coordinate in the spindle axis at which no collision
between tool and workpiece (fixtures) can occur.
Input range 0 to 99999.9999
Q254 Feed rate for counterboring?: Traversing
speed of the tool in mm/min during countersinking.
Input range 0 to 99999.9999 alternatively FAUTO,
FU
Q207 Feed rate for milling?: Traversing speed of
the tool in mm/min during milling. Input range 0 to
99999.999 alternatively FAUTO
Q512 Feed rate for approaching?: Traversing
speed of the tool in mm/min while approaching.
For smaller thread diameters you can decrease
the approaching feed rate in order to reduce the
danger of tool breakage. 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 ;DEPTH OF THREAD
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
MILLNG
Q512=0 ;FEED FOR APPROACH