HEIDENHAIN TNC 620 User Manual page 138

4
Fixed Cycles: Tapping / Thread Milling | THREAD DRILLING/MILLING (Cycle 264, DIN/ISO: G264, software
Q257 Infeed depth for chip breaking?
(incremental): Plunging depth after which the TNC
breaks the chip. No chip breaking if 0 is entered.
Input range 0 to 99999.9999
Q256 Retract dist. for chip breaking?
(incremental): Value by which the TNC retracts
the tool during chip breaking. Input range 0.000 to
99999.999
Q358 Sinking depth at front? (incremental):
Distance between tool point and the top surface
of the workpiece for countersinking at the front of
the tool. Input range -99999.9999 to 99999.9999
Q359 Countersinking offset at front?
(incremental): Distance by which the TNC moves
the tool center away from the center. Input range
0 to 99999.9999
Q200 Set-up clearance? (incremental): Distance
between tool tip and workpiece surface. Input
range 0 to 99999.9999
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
Q206 Feed rate for plunging?: Traversing speed
of the tool in mm/min while plunging. Input range
0 to 99999.999 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
138
Q202=5
Q258=0.2
Q257=5
Q256=0.2
Q358=+0
Q359=+0
Q200=2
Q203=+30
Q204=50
Q206=150
Q207=500
Q512=0
HEIDENHAIN | TNC 620 | User's manual for cycle programming | 10/2017
option 19)
;PLUNGING DEPTH
;UPPER ADV STOP DIST
;DEPTH FOR CHIP BRKNG
;DIST FOR CHIP BRKNG
;DEPTH AT FRONT
;OFFSET AT FRONT
;SET-UP CLEARANCE
;SURFACE COORDINATE
;2ND SET-UP CLEARANCE
;FEED RATE FOR PLNGNG
;FEED RATE FOR MILLNG
;FEED FOR APPROACH