HEIDENHAIN iTNC 530 (340 49x-04) - Manual (Page 420)

420 8 Programming: Cycles
8.6 Cy
cles f
o
r Milling P
o
c
k
ets, St
uds and Slots
SLOT MILLING (Cycle 253)
Use Cycle 253 to completely machine a 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 Starting from the left slot arc center, the tool moves in a
reciprocating motion 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.