Heidenhain TNC 640 (34059x-04) Cycle programming Manuale Utente Pagina 118

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Fixed Cycles: Tapping / Thread Milling
4.6 THREAD MILLING (Cycle 262, DIN/ISO: G262)
4
118
TNC 640 | User's Manual Cycle Programming | 3/2014
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 milling Q207: Traversing speed of
the tool in mm/min while milling. Input range 0 to
99999.999 alternatively FAUTO
Feed rate for approaching Q206: Traversing
speed of the tool in mm/min while approaching.
If the thread diameters are small, you can reduce
the danger of tool breakage by using a reduced
approaching feed rate. Input range 0 to 99999.999
alternatively FAUTO
Q355=0 ;THREADS PER STEP
Q253=750 ;F PRE-POSITIONING
Q351=+1 ;CLIMB OR UP-CUT
Q200=2 ;SET-UP CLEARANCE
Q203=+30 ;SURFACE COORDINATE
Q204=50 ;2ND SET-UP
CLEARANCE
Q207=500 ;FEED RATE FOR
MILLING
Q512=0 ;FEED RATE FOR
APPROACHING
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