HEIDENHAIN TNC 620 (340 56x-02) Cycle programming User Manual
Page 80
80
Fixed Cycles: Drilling
3.8 UNIVER
SAL PECKING (Cy
c
le 205,
DIN/ISO: G205, A
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Option)
U
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
U
Retraction rate for chip breaking Q256
(incremental): Value by which the TNC retracts the
tool during chip breaking. The TNC retracts the tool at
a feed rate of 3000 mm/min. Input range 0.1000 to
99999.9999.
U
Dwell time at depth Q211: Time in seconds that the
tool remains at the hole bottom. Input range 0 to
3600.0000
U
Deepened starting point Q379 (incremental with
respect to the workpiece surface): Starting position of
drilling if a shorter tool has already pilot drilled to a
certain depth. The TNC moves at the feed rate for
pre-positioning from the setup clearance to the
deepened starting point. Input range 0 to 99999.9999
U
Feed rate for pre-positioning Q253: Traversing
velocity of the tool during positioning from the setup
clearance to a 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
Example: NC blocks
11 CYCL DEF 205 UNIVERSAL PECKING
Q200=2
;SETUP CLEARANCE
Q201=-80
;DEPTH
Q206=150
;FEED RATE FOR PLNGNG
Q202=15
;PLUNGING DEPTH
Q203=+100 ;SURFACE COORDINATE
Q204=50
;2ND SETUP 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 DEPTH
Q379=7.5
;STARTING POINT
Q253=750
;F PRE-POSITIONING