Cycle Parameters - HEIDENHAIN TNC 620 User Manual

3
Fixed Cycles: Drilling
3.10 SINGLE-LIP DEEP-HOLE DRILLING (Cycle 241)

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 above the workpiece surface to the set-up
clearance above the deepened starting point. Input
range 0 to 99999.9999
Feed rate for pre-positioning Q253: Defines the
traversing speed of the tool when returning to
the plunging depth after having retracted for chip
breaking (Q256). This feed rate is also effective
when the tool is positioned to a deepened starting
point (Q379 not equal to 0). Entry in mm/min. Input
range 0 to 99999.9999 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
Drilling speed Q428: Desired speed for drilling.
Input range 0 to 99999
94
NC blocks
11 CYCL DEF 241 SINGLE-LIP
HEIDENHAIN | TNC 620 | User's manual for cycle programming | 9/2015
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 PLUNGING
DEPTH
Q212=0 ;DECREMENT
Q205=0 ;MIN. PLUNGING DEPTH
PLUNGING DEPTH