HEIDENHAIN iTNC 530 (340 49x-03) ISO programming - Manual (Page 356)

356 8 Programming: Cycles
8.4 Cy
cles f
o
r Milling P
o
c
k
ets, St
uds and Slots
CIRCULAR SLOT (Cycle 254)
Use Cycle 254 to completely machine a circular slot. Depending on the
cycle parameters, the following machining alternatives are available:
„ Complete machining: Roughing, floor finishing, side finishing
„
Only roughing
„ Only floor finishing and side finishing
„ Only floor finishing
„ Only side finishing
Roughing
1 The tool moves in a reciprocating motion in the slot center at the
plunging angle defined in the tool table to the first infeed depth.
Specify the plunging strategy with Parameter Q366.
2 The TNC roughs out the slot from the inside out, taking the
finishing allowances (parameters Q368 and Q369) into account.
3 This process is repeated until the slot depth is reached.
With an inactive tool table you must always plunge
vertically (Q366=0) because you cannot define a plunging
angle.