Heidenhain TNC 320 (77185x-01) Cycle programming User Manual Page 149

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RECTANGULAR STUD (Cycle 256, DIN/ISO: G256) 5.6
5
TNC 320 | User's Manual Cycle Programming | 3/2014
149
Climb or up-cut Q351: Type of milling operation
with M3
+1 = climb
–1 = up-cut
PREDEF: The TNC uses the value from the GLOBAL
DEF block
Depth Q201 (incremental): Distance between
workpiece surface and bottom of stud. Input range
-99999.9999 to 99999.9999
Plunging depth Q202 (incremental): Infeed per
cut. Enter a value greater than 0. Input range 0 to
99999.9999
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
Set-up clearance Q200 (incremental): Distance
between tool tip and workpiece surface. Input range
0 to 99999.9999; alternatively PREDEF
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 1.9999;
alternatively PREDEF
Approach position (0...4) Q437 Define the
approach strategy of the tool:
0: Right of the stud (default setting)
1: left corner below
2: right corner below
3: right corner top
4: left corner top. If approach marks on the stud
surface are caused by the setting Q437=0, specify
another approach position.
NC blocks
8 CYCL DEF 256 RECTANGULAR STUD
Q218=60 ;FIRST 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
Q437=0 ;APPROACH POSITION
9 L X+50 Y+50 R0 FMAX M3 M99
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