Selection Of The Cycles Via Softkey - Siemens SINUMERIK 840D sl Operating Manual

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Creating a G code program

8.8 Selection of the cycles via softkey

Retraction plane (abs)

During machining the tool traverses in rapid traverse from the tool change point to the

return plane and then to the safety clearance. The machining feedrate is activated at this

level. When the machining operation is finished, the tool traverses at the machining fee‐

drate away from the workpiece to the safety clearance level. It traverses from the safety

clearance to the retraction plane and then to the tool change point in rapid traverse.

The retraction plane is entered as an absolute value.

Normally, reference point Z0 and retraction plane RP have different values. The cycle

assumes that the retraction plane is in front of the reference point.

Safety clearance (inc)

The safety clearance specifies from which clearance to the material rapid traverse is no

longer used.

The direction in which the safety clearance is active is automatically determined by the

cycle. Generally, it is effective in several directions. The safety clearance must be entered

as an incremental value (without sign).

The feedrate F (also referred to as the machining feedrate) specifies the speed at which

the axes move when machining the workpiece. The unit of the feedrate (mm/min, mm/

rev, mm/tooth etc. ) always refers to the feedrate type programmed before the cycle call.

The maximum feedrate is determined via machine data.

Selection of the cycles via softkey

Overview of the machining steps

The following machining steps are available.

All of the cycles/functions available in the control are shown in this display. However, at a

specific system, only the steps possible corresponding to the selected technology can be

Operating Manual, 05/2017, A5E40868721

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Sinumerik 828d