HEIDENHAIN iTNC 530 (340 422) ISO programming - Manual (Page 318)

318 8 Programming: Cycles
8.4 Cy
cles f
o
r Mil
ling P
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ts, St
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s an
d Slo
ts
U U U U Set-up clearance Q200 (incremental value): Distance
between tool tip and workpiece surface.
U U U U Depth Q201 (incremental value): Distance between
workpiece surface and bottom of slot.
U U U U Feed rate for milling Q207: Traversing speed of the
tool in mm/min while milling.
U U U U Plunging depth Q202 (incremental value): Total
extent by which the tool is fed in the tool axis during
a reciprocating movement.
U U U U Machining operation (0/1/2) Q215: Define the
machining operation:
0: Roughing and finishing
1: Only roughing
2: Only finishing
U U U U Workpiece surface coordinate Q203 (absolute
value): Coordinate of the workpiece surface.
U U U U 2nd set-up clearance Q204 (incremental value):
Z coordinate at which no collision between tool and
workpiece (clamping devices) can occur.
U U U U Center in 1st axis Q216 (absolute value): Center of
the slot in the reference axis of the working plane.
U U U U Center in 2nd axis Q217 (absolute value): Center of
the slot in the minor axis of the working plane.
U U U U Pitch circle diameter Q244: Enter the diameter of
the pitch circle.
U U U U Second side length Q219: Enter the slot width. If you
enter a slot width that equals the tool diameter, the
TNC will carry out the roughing process only (slot
milling).
Enter in MP7441 bit 2 whether the TNC should output an
error message (bit 2=1) or not (bit 2=0) if a positive depth
is entered.
Danger of collision!
Keep in mind that the TNC reverses the calculation for pre-
positioning when a positive depth is entered. This
means that the tool moves at rapid traverse in the tool axis
at safety clearance below the workpiece surface!
Example: NC blocks
N520 G211 CIRCULAR SLOT
Q200=2 ;SET-UP CLEARANCE
Q201=-20 ;DEPTH
Q207=500 ;FEED RATE FOR MILLING
Q202=5 ;PLUNGING DEPTH
Q215=0 ;MACHINING OPERATION
Q203=+30 ;SURFACE COORDINATE
Q204=50 ;2ND SET-UP CLEARANCE
Q216=+50 ;CENTER IN 1ST AXIS
Q217=+50 ;CENTER IN 2ND AXIS
Q244=80 ;PITCH CIRCLE DIA.
Q219=12 ;SECOND SIDE LENGTH
Q245=+45 ;STARTING ANGLE
Q248=90 ;ANGULAR LENGTH
Q338=5 ;INFEED FOR FINISHING
Q206=150 ;FEED RATE FOR PLNGNG