Heidenhain TNC 620 (34056x-04) Cycle programming Uživatelský manuál Strana 143

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CIRCULAR SLOT (Cycle 254, DIN/ISO: G254, software option 19) 5.5
5
TNC 620 | User's Manual Cycle Programming | 5/2013
143
5.5 CIRCULAR SLOT (Cycle 254, DIN/ISO:
G254, software option 19)
Cycle run
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 (parameter Q368) into account.
3 This process is repeated until the programmed slot depth is
reached.
Finishing
4 Inasmuch as finishing allowances are defined, the TNC then
finishes the slot walls, in multiple infeeds if so specified. The
slot side is approached tangentially.
5 Then the TNC finishes the floor of the slot from the inside out.
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