HEIDENHAIN ITNC 530 - CYCLE PROGRAMMING User Manual page 149

U
Setup clearance Q200 (incremental): Distance
between tool tip and workpiece surface. Input range
0 to 99999.9999, alternatively PREDEF
U Workpiece surface coordinate Q203 (absolute):
Absolute coordinate of the workpiece surface. Input
range -99999.9999 to 99999.9999
U 2nd setup 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
U Path overlap factor Q370: Q370 x tool radius =
stepover factor k. Input range: 0.1 to 1.414
alternatively PREDEF.
U Plunging strategy Q366: Type of plunging strategy:
0 = vertical plunging. The TNC plunges
perpendicularly, regardless of the plunging angle
ANGLE defined in the tool table.
1 = helical plunging. In the tool table, the plunging
angle ANGLE for the active tool must be defined as
not equal to 0. The TNC will otherwise display an
error message.
Alternative: PREDEF
U Feed rate for finishing Q385: Traversing speed of
the tool during side and floor finishing in mm/min.
Input range: 0 to 99999.999; alternatively FAUTO, FU,
FZ.
HEIDENHAIN iTNC 530
Example: NC blocks
8 CYCL DEF 252 CIRCULAR POCKET
Q215=0 ;MACHINING OPERATION
Q223=60 ;CIRCLE 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
Q369=0.1 ;ALLOWANCE FOR FLOOR
Q206=150 ;FEED RATE FOR PLUNGING
Q338=5 ;INFEED FOR FINISHING
Q200=2 ;SETUP CLEARANCE
Q203=+0 ;SURFACE COORDINATE
Q204=50 ;2ND SETUP CLEARANCE
Q370=1 ;TOOL PATH OVERLAP
Q366=1 ;PLUNGE
Q385=500 ;FEED RATE FOR FINISHING
9 CYCL CALL POS X+50 Y+50 Z+0 FMAX M3
149