HEIDENHAIN CNC PILOT 4290
289
Roughing longitudinal, transverse (G810, G820)
Parameters
P: Cutting depth (maximum infeed)
A: Approach angle (reference: Z axis)
■ Longitudinal: Default 0°/180° (parallel to Z axis)
■ Plan: default 90°/270° (perpendicular to Z axis)
W: Departure angle (reference: Z axis)
■ Longitudinal: Default 90°/270° (perpendicular to Z axis)
■ Transverse: Default 0°/180° (parallel to Z axis)
X, Z: Cutting limit
Type of oversize is selected by soft key per Softkey
I, K: Different longitudinal/transverse oversize
I: Constant oversize – generates ”oversize G58” before the
cycle
Plunging: Machine descending contours ?
■ Ye s
■ No
E: Reduced plunging feed rate with descending contours
H: Type of departure – type of contour smoothing
■ H=0: Smoothing after each cut along the contour
■ H=1: Lift off at under 45°; contour smoothing after the last
cut
■ H=2: Lift off at under 45° – no contour smoothing
Q: Retraction at cycle end
■ Q=0: Return to starting point
Longitudinal: first X, then Z direction
Transverse: First Z, then X direction
■ Q=1: Positions in front of the finished contour
■ Q=2: Lifts off to safety clearance and stops
Undercutting (see soft-key table)
6.12.4 Roughing
Overview of roughing operations
■ Roughing longitudinal (G810)
■ Roughing transverse (G820)
■ Contour parallel roughing (G830)
■ Roughing automatic – TURN PLUS generates all roughing
operations automatically
■ Rough hollowing
■ Residual roughing longitudinal
■ Residual roughing transverse
■ Residual roughing contour parallel
■ automatic hollowing
■ Rough hollowing (neutral tool)
”Roughing” Soft key
Select longitudinal/transverse oversize
or constant oversize.
FD relief turn machining
E and F undercut machining
G undercut machining
H, K and U undercut machining
6.12 Interactive Working Plan Generation (IWG)
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