Operation Manual

HEIDENHAIN CNC PILOT 640 213
4.5 Recessing cycles
Undercut position
The CNC PILOT determines the position of an undercut from the cycle
parameters for starting point X, Z (Manual mode: current tool
position) and corner point of contour X1, Z1.
Contour forms
Undercuts can only be executed in orthogonal, paraxial
contour corners along the longitudinal axis.
Contour elements in recessing cycles
Basic mode
Machining a rectangular area
Expanded mode
Oblique cut at contour start
Expanded mode
Oblique cut at contour end
Expanded mode
Rounding arc in both corners of contour valley
Expanded mode
Chamfer (or rounding) at contour start
Expanded mode
Chamfer (or rounding) at contour end