Heidenhain TNC 620 (34056x-04) Cycle programming Manual de usuario descargar pdf (Pagina 96)

100

101

Fixed Cycles: Tapping / Thread Milling

4.2 TAPPING NEW with a floating tap holder (Cycle 206, DIN/ISO:

G206)

TNC 620 | User's Manual Cycle Programming | 5/2013

Please note while programming:

Program a positioning block for the starting point

(hole center) in the working plane with radius

compensation R0.

The algebraic sign for the cycle parameter DEPTH

determines the working direction. If you program

DEPTH=0, the cycle will not be executed.

A floating tap holder is required for tapping. It must

compensate the tolerances between feed rate and

spindle speed during the tapping process.

When a cycle is being run, the spindle speed override

knob is disabled. The feed-rate override knob is active

only within a limited range, which is defined by the

machine tool builder (refer to your machine manual).

For tapping right-hand threads activate the spindle

with M3, for left-hand threads use M4.

Danger of collision!

Use the machine parameter displayDepthErr to

define whether, if a positive depth is entered, the

TNC should output an error message (on) or not (off).

Keep in mind that the TNC reverses the calculation

for pre-positioning when a positive depth is

entered. This means that the tool moves at rapid

traverse in the tool axis to set-up clearance below

the workpiece surface!

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Heidenhain TNC 620 (34056x-04) Cycle programming Manual de usuario Pagina 96

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