Roughing (Cycle 22, Din/Iso: G122, Software Option 19); Cycle Run - HEIDENHAIN TNC 620 User Manual

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ROUGHING (Cycle 22, DIN/ISO: G122,

software option 19)

Use Cycle 22 ROUGHING to define the technology data for

Before calling Cycle 22 you need to program further cycles:

Cycle 14 CONTOUR or SEL CONTOUR

Cycle 20 CONTOUR DATA

Cycle 21 PILOT DRILLING, if necessary

1 The TNC positions the tool over the cutter infeed point, taking

the allowance for side into account.

2 In the first plunging depth, the tool mills the contour from inside

outward at the milling feed rate.

3 First the island contours (C and D in the figure at right) are

rough-milled until the pocket contour (A, B) is approached.

4 In the next step the TNC moves the tool to the next plunging

depth and repeats the roughing procedure until the program

depth is reached.

5 Finally, the tool retracts in the tool axis to the clearance

height or to the position last programmed before the cycle.

This depends on the parameter ConfigDatum, CfgGeoCycle,

posAfterContPocket.

Fixed Cycles: Contour Pocket | ROUGHING (Cycle 22, DIN/ISO: G122, software option 19)

HEIDENHAIN | TNC 620 | User's manual for cycle programming | 10/2017