Undercut position, Contour forms, 5 recessing cy cles – HEIDENHAIN SW 68894x-03 User Manual

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Original mode

HEIDENHAIN CNC PILOT 640

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4.5 Recessing cy

cles

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