Cycle Parameters - HEIDENHAIN TNC 620 User Manual

3
Fixed Cycles: Drilling
3.10 SINGLE-LIP DEEP-HOLE DRILLING (Cycle 241, DIN/ISO: G241,
software option 19)

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 in mm/min during drilling. 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
speed of the tool in mm/min during positioning from
set-up clearance to the deepened starting point.
Effective only if the value entered for Q379 is not
equal to 0. Input range 0 to 99999.999, alternatively
FMAX, FAUTO
Feed rate for retraction 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
drilling feed rate 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
90
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
Q435=0 ;DWELL DEPTH
Q401=100 ;FEED RATE FACTOR
Q202=9999 ;MAX. PLUNGING DEPTH
Q212=0 ;DECREMENT
Q205=0 ;MIN. PLUNGING DEPTH
TNC 620 | User's Manual Cycle Programming | 3/2014