HEIDENHAIN TNC 320 User Manual page 151

U Feed rate for milling Q207: Traversing speed of the
tool during milling in mm/min. Input range 0 to
99999.999; alternatively FAUTO, FU, FZ
U Climb or up-cut Q351: Type of milling operation with
M3:
+1 = climb milling
–1 = up-cut milling
U
Depth Q201 (incremental): Distance between
workpiece surface and bottom of stud. Input range
-99999.9999 to 99999.9999
U Plunging depth Q202 (incremental): Infeed per cut.
Enter a value greater than 0. Input range 0 to
99999.9999
U
Feed rate for plunging Q206: Traversing speed of
the tool while moving to depth in mm/min. Input
range 0 to 99999.999; alternatively FMAX, FAUTO,
FU, FZ
U Set-up clearance Q200 (incremental): Distance
between tool tip and workpiece surface. Input range
0 to 99999.9999
U
Workpiece surface coordinate Q203 (absolute):
Absolute coordinate of the workpiece surface. Input
range -99999.9999 to 99999.9999
U 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
U Path overlap factor Q370: Q370 x tool radius =
stepover factor k. Input range 0.1 to 1.9999.
HEIDENHAIN TNC 320
Example: NC blocks
8 CYCL DEF 256 RECTANGULAR STUD
Q218=60 ;1ST SIDE LENGTH
Q424=74 ;WORKPC. BLANK SIDE 1
Q219=40 ;2ND SIDE LENGTH
Q425=60 ;WORKPC. BLANK SIDE 2
Q220=5 ;CORNER RADIUS
Q368=0.2 ;ALLOWANCE FOR SIDE
Q224=+0 ;ANGLE OF ROTATION
Q367=0 ;STUD POSITION
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
9 L X+50 Y+50 R0 FMAX M3 M99
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