Cycle Parameters - HEIDENHAIN TNC 620 User Manual

3
Fixed Cycles: Drilling
3.8 UNIVERSAL PECKING (Cycle 205, DIN/ISO: G205, 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 (tip of drill
taper). 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
Plunging depth Q202 (incremental): Infeed per cut.
Input range 0 to 99999.9999. The depth does not
have to be a multiple of the plunging depth. The
TNC will go to depth in one movement if:
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
Decrement Q212 (incremental): Value by which
the TNC decreases the plunging depth Q202. Input
range 0 to 99999.9999
Minimum plunging depth Q205 (incremental): If
you have entered a decrement, the TNC limits the
plunging depth to the value entered with Q205.
Input range 0 to 99999.9999
Upper advanced stop distance Q258 (incremental):
Set-up clearance for rapid traverse positioning
when the TNC moves the tool again to the current
plunging depth after retraction from the hole;
value for the first plunging depth. Input range 0 to
99999.9999
Lower advanced stop distance Q259 (incremental):
Set-up clearance for rapid traverse positioning
when the TNC moves the tool again to the current
plunging depth after retraction from the hole;
value for the last plunging depth. Input range 0 to
99999.9999
Infeed depth for chip breaking Q257
(incremental): Depth at which the TNC carries out
chip breaking. No chip breaking if 0 is entered. Input
range 0 to 99999.9999
Retraction rate for chip breaking Q256
(incremental): Value by which the TNC retracts
the tool during chip breaking. Input range 0.000 to
99999.999
Dwell time at depth Q211: Time in seconds that
the tool remains at the hole bottom. Input range 0 to
3600.0000
84
the plunging depth is equal to the depth
the plunging depth is greater than the depth
NC blocks
11 CYCL DEF 205 UNIVERSAL PECKING
Q200=2 ;SET-UP CLEARANCE
Q201=-80 ;DEPTH
Q206=150 ;FEED RATE FOR
PLNGNG
Q202=15 ;PLUNGING DEPTH
Q203=+100 ;SURFACE COORDINATE
Q204=50 ;2ND SET-UP
CLEARANCE
Q212=0.5 ;DECREMENT
Q205=3 ;MIN. PLUNGING DEPTH
Q258=0.5 ;UPPER ADV. STOP DIST.
Q259=1 ;LOWER ADV. STOP
DIST.
Q257=5 ;DEPTH FOR CHIP
BRKNG
Q256=0.2 ;DIST. FOR CHIP BRKNG
Q211=0.25 ;DWELL TIME AT
BOTTOM
Q379=7.5 ;START POINT
Q253=750 ;F PRE-POSITIONING
Q208=9999 ;RETRACTION FEED
RATE
Q395=0 ;DEPTH REFERENCE
TNC 620 | User's Manual Cycle Programming | 3/2014