beautypg.com

Slot milling (cycle 253) – HEIDENHAIN iTNC 530 (340 49x-04) User Manual

Page 420

background image

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.