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Undercut position, Contour forms, Undercut position contour forms – HEIDENHAIN SW 68894x-02 User Manual

Page 199: 5 recessing cy cles

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HEIDENHAIN CNC PILOT 640

199

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 (current tool position in Manual

mode) 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 the contour

valley

Expanded mode

Chamfer (or rounding arc) at contour start

Expanded mode

Chamfer (or rounding arc) at contour end