HEIDENHAIN TNC 320 (34055x-06) Cycle programming - Manual (Page 77)

UNIVERSAL PECKING (Cycle 205, DIN/ISO: G205) 3.8
3
TNC 320 | User's Manual Cycle Programming | 5/2013
77
Danger of collision!
Use the machine parameter displayDepthErr to
define whether, if a positive depth is entered, the
TNC should output an error message (on) or not (off).
Keep in mind that the TNC reverses the calculation
for pre-positioning when a
positive depth is
entered . This means that the tool moves at rapid
traverse in the tool axis to set-up clearance below
the workpiece surface!
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 during drilling in mm/min. 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:
the plunging depth is equal to the depth
the plunging depth is greater than the depth
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
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