HEIDENHAIN TNC 620 (34056x-04) Cycle programming - Manual (Page 88)

Fixed Cycles: Drilling
3.10 SINGLE-LIP D.H.DRLNG (Cycle 241, DIN/ISO: G241, software option
19)
3
88
TNC 620 | User's Manual Cycle Programming | 5/2013
Cycle parameters
Set-up clearance Q200 (incremental): Distance
between tool tip and workpiece surface. Input range
0 to 99999.9999
Depth Q201 (incremental): Distance between
workpiece surface and bottom of hole. Input range
-99999.9999 to 99999.9999
Feed rate for plunging Q206: Traversing speed of
the tool during drilling in mm/min. Input range 0 to
99999.999; alternatively
FAUTO, FU
Dwell time at depth Q211: Time in seconds that
the tool remains at the hole bottom. Input range 0 to
3600.0000
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
Deepened starting point Q379 (incremental with
respect to the workpiece surface): Starting position
for actual drilling operation. The TNC moves at
the
feed rate for pre-positioning from the set-
up clearance to the deepened starting point. Input
range 0 to 99999.9999
Feed rate for pre-positioning Q253: Traversing
velocity of the tool during positioning from the set-
up clearance to the deepened starting point in mm/
min. Effective only if Q379 is entered not equal to
0. Input range 0 to 99999.999, alternatively
FMAX,
FAUTO
Retraction feed rate Q208: Traversing speed of
the tool in mm/min when retracting from the hole.
If you enter Q208 = 0, the TNC retracts the tool at
the feed rate in Q206. Input range 0 to 99999.999,
alternatively
FMAX, FAUTO
Rotat. dir. of entry/exit (3/4/5) Q426: Desired
direction of spindle rotation when tool moves into
and retracts from the hole. Input:
3 : Turn the spindle with M3
4 : Turn the spindle with M4
5 : Move with stationary spindle
Spindle speed of entry/exit Q427: Desired spindle
speed when tool moves into and retracts from the
hole. Input range 0 to 99999
NC blocks
11 CYCL DEF 241 SINGLE-LIP
D.H.DRLNG
Q200=2 ;SET-UP CLEARANCE
Q201=-80 ;DEPTH
Q206=150 ;FEED RATE FOR
PLNGNG
Q211=0.25 ;DWELL TIME AT
BOTTOM
Q203=+100 ;SURFACE COORDINATE
Q204=50 ;2ND SET-UP
CLEARANCE
Q379=7.5 ;START POINT
Q253=750 ;F PRE-POSITIONING
Q208=1000 ;RETRACTION FEED
RATE
Q426=3 ;DIR. OF SPINDLE ROT.
Q427=25 ;ROT. SPEED INFEED/
OUT
Q428=500 ;DRILLING SPEED
Q429=8 ;COOLANT ON
Q430=9 ;COOLANT OFF