Siemens SINUMERIK 802D sl Servisní příručka stáhnout pdf (Strana 45)

Manual machining

5.2 Display and operator control optios in the main screen for "Manual Machine Plus"

Manual Machine Plus Turning

Programming and Operating Manual, 06/2009, 6FC5398-6CP10-1BA0

By pressing the toggle key <SELECT>, you can choose one of the following spindle types:

● Constant spindle speed (rpm)

This value defines the programmed spindle speed for machining with "Spindle speed +

Time feed" or "Spindle speed + Revolutional feedrate".

The constant spindle speed is achieved only if no speed reduction is programmed by

means of spindle override weighting or with spindle setting data.

● Constant cutting rate (m/min)

Cutting speed input value for machining with "Cutting speed + revolutional feedrate". The

spindle speed is adjusted to the machining diameter of the workpiece so that uniform

cutting conditions are achieved.

Since the spindle would (in simple mathematical terms) have to rotate at an "infinitely

high" speed at the rotational center point in this mode, this speed is limited in the spindle

setting data by the input value "MR".

The constant cutting speed can also be influenced by means of the feedrate and spindle

override weighting settings.

CAUTION

The feedrate or spindle type can only be changed if all axes and the spindle are

stationary.

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Siemens SINUMERIK 802D sl Servisní příručka Strana 45