Fundamentals

Application

With the teach-in cut, the control determines the reference power of the spindle for the machining step. Based on the reference power, the control adjusts the feed rate in control mode.

If you have already determined the reference power for a machining operation, you can specify the value for the machining operation. For this, the control provides the AFC-LOAD column in the tool management and the LOAD syntax element in the FUNCTION AFC CUT BEGIN function. In this case, the control no longer performs a teach-in cut, but uses the specified value immediately for control.

Requirements

Description of function

With a teach-in cut, the control at first copies the basic settings for each machining step, as defined in the AFC.TAB table, to a file called <name>.H.AFC.DEP.

AFC.DEP settings file for teach-in cuts

When you are performing a teach-in cut, the control shows the spindle reference power determined until this time in a pop-up window.

When the control has determined the control reference power, it ends the teach-in cut and switches to control mode.

Notes

  • When you record a teach-in cut, the control internally sets the spindle override to 100%. Then you can no longer change the spindle speed.
  • During the teach-in cut, you can influence the measured reference load by using the feed rate override to make any changes to the contouring feed rate.
  • You can repeat a teach-in cut as often as desired. Manually change the status from ST back to L. If the programmed feed rate value is far too high and forces you to sharply decrease the feed rate override during the machining step, you will have to repeat the teach-in cut.
  • If the determined reference load is greater than 2%, the control changes the status from teach-in (L) to controlling (C). Adaptive feed control is not possible for smaller values.