HEIDENHAIN TNC 620 User Manual page 154

5
Fixed Cycles: Pocket Milling / Stud Milling / Slot Milling
5.5 CIRCULAR SLOT (Cycle 254, DIN/ISO: G254)
Plunging strategy Q366: Type of plunging strategy:
0: vertical plunging. The plunging angle (ANGLE) in
the tool table is not evaluated.
1, 2: reciprocal plunging. In the tool table, the
plunging angle ANGLE for the active tool must be
defined as not equal to 0. Otherwise, the TNC
generates an error message
PREDEF: The TNC uses the value from the GLOBAL
DEF block
Feed rate for finishing Q385: Traversing speed of
the tool during side and floor finishing in mm/min.
Input range 0 to 99999.999; alternatively FAUTO,
FU, FZ
Feed rate reference (0...3) Q439: Define a
reference for the programmed feed rate:
0: The feed rate refers to the center point path of
the tool
1: The feed rate refers to the tool cutting edge only
during side finishing; otherwise, it refers to the
center point path
2: The feed rate refers to the tool cutting edge
during side
to the center point path
3: The feed rate always refers to the tool cutting
edge
154
and floor finishing; otherwise, it refers
HEIDENHAIN | TNC 620 | User's manual for cycle programming | 9/2015
Q206=150 ;FEED RATE FOR
PLNGNG
Q338=5 ;INFEED FOR FINISHING
Q200=2 ;SET-UP CLEARANCE
Q203=+0 ;SURFACE COORDINATE
Q204=50 ;2ND SET-UP
CLEARANCE
Q366=1 ;PLUNGE
Q385=500 ;FINISHING FEED RATE
Q439=0 ;FEED RATE REFERENCE
9 L X+50 Y+50 R0 FMAX M3 M99