HEIDENHAIN TNC 620 User Manual page 145

Infeed for finishing Q338 (incremental): Infeed per
cut. Q338=0: Finishing in one infeed. Input range 0
to 99999.9999
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
Plunging strategy Q366: Type of plunging strategy:
0 = vertical plunging. In the tool table, the
plunging angle ANGLE for the active tool must
be defined as 0 or 90. The TNC will otherwise
display an error message.
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
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
Feed rate reference (0...3) Q439: Define a
reference for the programmed feed rate:
0: The feed rate refers to the center point path of
the tool
1: The feed rate refers to the tool cutting edge only
during side finishing; otherwise, it refers to the
center point path
2: The feed rate refers to the tool cutting edge
during side
to the center point path
3: The feed rate always refers to the tool cutting
edge
HEIDENHAIN | TNC 620 | User's manual for cycle programming | 9/2015
CIRCULAR POCKET (Cycle 252, DIN/ISO: G252)
and floor finishing; otherwise, it refers
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
PLNGNG
Q338=5 ;INFEED FOR FINISHING
Q200=2 ;SET-UP CLEARANCE
Q203=+0 ;SURFACE COORDINATE
Q204=50 ;2ND SET-UP
CLEARANCE
Q370=1 ;TOOL PATH OVERLAP
Q366=1 ;PLUNGE
Q385=500 ;FINISHING FEED RATE
Q439=3 ;FEED RATE REFERENCE
9 L X+50 Y+50 R0 FMAX M3 M99
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