HEIDENHAIN TNC 640 (34059x-05) Cycle programming User Manual
Page 166
Fixed Cycles: Pocket Milling / Stud Milling / Slot Milling
5.7
CIRCULAR STUD (Cycle 257, DIN/ISO: G257)
5
166
TNC 640 | User's Manual Cycle Programming | 1/2015
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; alternatively
PREDEF
Path overlap factor Q370: Q370 x tool radius
= stepover factor k. Input range: 0.1 to 1.414
alternatively
PREDEF
Starting angle Q376: Polar angle relative to the stud
center from which the tool approaches the stud.
Input range 0 to 359°
NC blocks
8 CYCL DEF 257 CIRCULAR STUD
Q223=60
;FINISHED PART
DIAMETER
Q222=60
;WORKPIECE BLANK
DIAMETER
Q368=0.2
;ALLOWANCE FOR SIDE
Q207=500
;FEED RATE FOR
MILLING
Q351=+1
;CLIMB OR UP-CUT
Q201=-20
;DEPTH
Q202=5
;PLUNGING DEPTH
Q206=150
;FEED RATE FOR
PLNGNG
Q200=2
;SET-UP CLEARANCE
Q203=+0
;SURFACE COORDINATE
Q204=50
;2ND SET-UP
CLEARANCE
Q370=1
;TOOL PATH OVERLAP
Q376=0
;STARTING ANGLE
9 L X+50 Y+50 R0 FMAX M3 M99