HEIDENHAIN TNC 640 (34059x-01) Cycle programming - Manual (Page 137)

HEIDENHAIN TNC 640 137
5.3 CIR
C
ULAR POCKET (Cy
c
le 252, DIN/ISO: G252)
U Set-up clearance Q200 (incremental): Distance
between tool tip and workpiece surface. Input range
0 to 99999.9999
U Workpiece surface coordinate Q203 (absolute):
Absolute coordinate of the workpiece surface. Input
range -99999.9999 to 99999.9999
U 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
U Path overlap factor Q370: Q370 x tool radius =
stepover factor k. Input range 0.1 to 1.9999.
U Plunging strategy Q366: Type of plunging strategy:
„ 0 = vertical plunging. In the tool table, the plunging
angle ANGLE for the active tool must be defined as 0
or 90. The TNC will otherwise display an error
message.
„ 1 = helical plunging. In the tool table, the plunging
angle ANGLE for the active tool must be defined as
not equal to 0. The TNC will otherwise display an
error message.
U 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
Example: NC blocks
8 CYCL DEF 252 CIRCULAR POCKET
Q215=0 ;MACHINING OPERATION
Q223=60 ;CIRCLE DIAMETER
Q368=0.2 ;ALLOWANCE FOR SIDE
Q207=500 ;FEED RATE FOR MILLING
Q351=+1 ;CLIMB OR UP-CUT
Q201=–20 ;DEPTH
Q202=5 ;PLUNGING DEPTH
Q369=0.1 ;ALLOWANCE FOR FLOOR
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
Q370=1 ;TOOL PATH OVERLAP
Q366=1 ;PLUNGE
Q385=500 ;FEED RATE FOR FINISHING
9 L X+50 Y+50 R0 FMAX M3 M99
X
Z
Q200
Q204
Q203
Q369
Q368