HEIDENHAIN iTNC 530 (34049x-08) Cycle programming - Manual (Page 158)

158 Fixed cycles: pocket milling / stud milling / slot milling
5.4 SL
O
T
MILLING (Cy
cle 253, DIN/ISO:
G253)
 Set-up clearance
Q200 (incremental): Distance
between tool tip and workpiece surface. Input range
0 to 99999.9999; alternatively PREDEF
 Workpiece surface coordinate Q203 (absolute):
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
 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. Otherwise, the TNC generates an
error message. Plunge on a helical path only if there
is enough space.
 2 = Reciprocating plunge. 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
 Feed rate for finishing
Q385: Traversing speed of
the tool during side and floor finishing in mm/min.
Input range 0 to 99999.9999; alternatively FAUTO, FU,
FZ
 Feed rate reference (0 to 3)
Q439: Select a
reference for the programmed feed rate:
 0 = Feed rate refers to the tool path center
 1 = Feed rate refers to the tool cutting edge only
during side finishing; otherwise it refers to the tool
path center
 2 = Feed rate refers to the tool cutting edge during
floor finishing and side finishing; otherwise it refers
to the tool path center
 3 = Feed rate always refers to the tool cutting edge;
otherwise it refers to the tool path center
Example: NC blocks
8 CYCL DEF 253 SLOT MILLING
Q215=0 ;MACHINING OPERATION
Q218=80 ;SLOT LENGTH
Q219=12 ;SLOT WIDTH
Q368=0.2 ;ALLOWANCE FOR SIDE
Q374=+0 ;ANGLE OF ROTATION
Q367=0 ;SLOT POSITION
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 PLNGNG
Q338=5 ;INFEED FOR FINISHING
Q200=2 ;SET-UP CLEARANCE
Q203=+0 ;SURFACE COORDINATE
Q204=50 ;2ND SET-UP CLEARANCE
Q366=1 ;PLUNGE
Q385=500 ;FEED RATE FOR FINISHING
Q439=0 ;FEED RATE REFERENCE
9 CYCL CALL POS X+50 Y+50 Z+0 FMAX M3
X
Z
Q200
Q204
Q203
Q369
Q368