MTC200 New Functions 19VRS - Nuova Elva

7-8 CNC functions New Functions 19VRS
7.3 Adaptive feed control (G26)
Boundary conditions
Syntax
The adaptive feed control allows to modify the feedrate of an axis or the
path velocity of the interpolating axes depending on the motor
current/torque of a spindle or feed axis so that the machining capacity or
machining volume (during milling, turning or grinding) remains constant.
Thus, it is possible to obtain
• an improved surface quality,
• shorter machining times and
• to protect the tool, workpiece and machine against overload.
The function is activated by parameter B00.062. The feed control
parameters are available in machine page 30.
• The adaptive feed control can be used in conjunction with digital
spindles/feed axes with SERCOS interface.
• All axes and spindles involved in the adaptive feed control must be
part of a process. This means that the reference axis must be part of
the process of which the feedrate is to be controlled.
• All axes and spindles (including the feed axes involved in the
interpolation) involved in the adaptive feed control must be connected
to an axis processor. (The CPU informs the APR to which axes the
internal override is to be distributed.)
• The adaptive feed control cannot be used for the following functions:
- axis homing cycle (G74),
- feed to positive stop (G75).
• Furthermore, the adaptive feed control is only available in the
operating modes automatic, semi-automatic and MDI.
• The NC deactivates the adaptive feed control automatically (and sets
G25) upon control reset and end of program.
G25 Switch off adaptive feed control (switch-on state)
G26 Switch on adaptive feed control
DOK-MTC200-NEW*FUN*V19-AW02-EN-P