HEIDENHAIN TNC 620 User Manual page 134

4
Fixed Cycles: Tapping / Thread Milling | THREAD MILLING/COUNTERSINKING (Cycle 263, DIN/ISO: G263,
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 counterboring.
Input range 0 to 99999.9999 alternatively FAUTO,
fu
Q207 Feed rate for milling?: Traversing speed of
the tool in mm/min while 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
134
NC blocks
25 CYCL DEF 263 THREAD MLLNG/
CNTSNKG
Q335=10
Q239=+1.5
Q201=-16
Q356=-20
Q253=750
Q351=+1
Q200=2
Q357=0.2
Q358=+0
Q359=+0
Q203=+30
Q204=50
Q254=150
Q207=500
Q512=0
HEIDENHAIN | TNC 620 | User's manual for cycle programming | 10/2017
software option 19)
;NOMINAL DIAMETER
;THREAD PITCH
;DEPTH OF THREAD
;COUNTERSINKING DEPTH
;F PRE-POSITIONING
;CLIMB OR UP-CUT
;SET-UP CLEARANCE
;CLEARANCE TO SIDE
;DEPTH AT FRONT
;OFFSET AT FRONT
;SURFACE COORDINATE
;2ND SET-UP CLEARANCE
;F COUNTERBORING
;FEED RATE FOR MILLNG
;FEED FOR APPROACH