Feed rate

Application

Description of function

With turning, feed rates are often specified in millimeters per revolution. The control thus moves the tool at a defined value for every spindle rotation. The resulting contouring feed rate is thus dependent on the speed of the turning spindle. The control increases the feed rate at high spindle speeds and reduces it at low spindle speeds. This enables you to machine with uniform cutting depth and constant cutting force, thus achieving constant chip thickness

640_turn_004

Note

During many turning operations, it is not possible to maintain constant surface speeds (VCONST: ON) because the maximum spindle speed is reached first. Use the machine parameter facMinFeedTurnSMAX (no. 201009) to define the behavior of the control after the maximum speed has been reached.