Feedrate per revolution (G95)

During turning with active G95, a constant chip thickness can be defined with the F Word in [mm/rev, inch/rev] irrespective of spindle speed.

Here, the axis feedrate is linked to the rotational speed of the position-controlled spindle. It is only valid in conjunction with the G function with which it was programmed. This means that if a change is made from G95 to G94 or G93 (Section "Machining time or feedrate") the valid F word for G95 is not adopted..

G95 can also be programmed in combination with a controlled (PLC) main spindle (P-CHAN-00069). Please note here that the resulting feedrate per revolution is only dependent on the programmed values (F word, S word). Real-time influences on the spindle speed are not considered, e.g. override changes. This type of programming in only permitted in a channel in conjunction with the assigned main spindle as of Build V3.1.3066.02.

Programming Example

Feedrate per revolution (G95)

Feedrate per revolution (G95) and axis coupling with variable gear ratio (gear coupling)

As of Build 3.1.3079.03 the feedrate of the path axes can be coupled to the speed of the main spindle with #TURN [ROT_FEED_CPL=1]. The feedrate is adapted depending on the gear ratio settings of the axis couplings. This permits the activation of the feedrate per revolution (G95) while spindles are rotating.

Axis couplings with variable gear ratios can be linked by

• the NC command #GEAR LINK or
• yia the HLI [FCT-A9// Axis coupling via HLI]

.

In the default setting of #TURN [ROT_FEED_CPL=0], the speed of the main spindle is used with no consideration given to the axis couplings.

If the main spindle is changed, the setting of ROT_FEED_CPL is adopted automatically for the new main spindle and deactivated for the previous main spindle.