HEIDENHAIN TNC 320 - Cycle Parameters

Fixed Cycles: Drilling
3.10 SINGLE-LIP DEEP-HOLE DRILLING (Cycle 241, DIN/ISO: G241)
3
88
HEIDENHAIN | TNC 320 | User’s manual for cycle programming | 9/2016
Cycle parameters
Q200 Set-up clearance? (incremental): Distance
between tool tip and Q203 SURFACE COORDINATE.
Input range 0 to 99999.9999
Q201 Depth? (incremental): Distance between
Q203 SURFACE COORDINATE and bottom of hole.
Input range -99999.9999 to 99999.9999
Q206 Feed rate for plunging?: Traversing speed of
the tool in mm/min during drilling. Input range 0 to
99999.999, alternatively FAUTO, FU
Q211 Dwell time at the depth?: Time in seconds
that the tool remains at the hole bottom. Input range
0 to 3600.0000
Q203 Workpiece surface coordinate? (absolute):
Distance to machine datum Input range
-99999.9999 to 99999.9999
Q204 2nd set-up clearance? (incremental):
Coordinate in the spindle axis at which no collision
between tool and workpiece (fixtures) can occur.
Input range 0 to 99999.9999
Q379 Deepened starting point? (incremental
with respect to Q203 SURFACE COORDINATE,
takes Q200 into account): Starting position
of actual drilling. The TNC moves at Q253 F
PRE-POSITIONING to the value Q200 SET-UP
CLEARANCE above the deepened starting point.
Input range 0 to 99999.9999
Q253 Feed rate for pre-positioning?: Defines the
traversing speed of the tool when re-approaching
Q201 DEPTH after Q256 DIST FOR CHIP BRKNG.
This feed rate is also in effect when the tool is
positioned to Q379 STARTING POINT (not equal
0). Entry in mm/min. Input range 0 to 99999.9999
alternatively FMAX, FAUTO
Q208 Feed rate for retraction?: Traversing speed
of the tool in mm/min when retracting from the
hole. If you enter Q208=0, the TNC retracts the tool
at Q206 FEED RATE FOR PLNGNG. Input range 0 to
99999.999, alternatively FMAX, FAUTO
Q426 Rot. dir. of entry/exit (3/4/5)?: 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
Q427 Spindle speed of entry/exit?: Rotational
speed at which the tool is to rotate when moving
into and retracting from the hole Input range 0 to
99999
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 DEPTH
Q203=+100;SURFACE COORDINATE
Q204=50 ;2ND SET-UP
CLEARANCE
Q379=7.5 ;STARTING 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 ;ROT. SPEED DRILLING
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