HEIDENHAIN TNC 620 (81760x-02) Cycle programming User Manual
Page 147
SLOT MILLING (Cycle 253, DIN/ISO: G253), Software Option 19
5.4
5
TNC 620 | User's Manual Cycle Programming | 2/2015
147
Finishing allowance for floor Q369 (incremental
value): Finishing allowance in the tool axis. 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
FAUTO, FU, FZ
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
Plunging strategy Q366: Type of plunging strategy:
0 = vertical plunging. The plunging angle
(ANGLE) in the tool table is not evaluated.
1, 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 99999.999; 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
and
floor finishing; otherwise, it refers
to the center point path
3
: The feed rate always refers to the tool cutting
edge
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
;FINISHING FEED RATE
Q439=0
;FEED RATE REFERENCE
9 L X+50 Y+50 R0 FMAX M3 M99