HEIDENHAIN CNC Pilot 4290 V7.1 - Manual (Page 558)

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ining Inf
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Protective zones for drilling and milling operations
TURN PLUS machines drilling and milling contours on transverse
surfaces (front/rear face) if:
„ (Horizontal) distance to transverse surface > 5 mm, or
„ Distance between chucking equipment and drilling/milling contour is
> SAR (SAR: See machining parameter 2).
If jaws are used for clamping the shaft at the spindle, TURN PLUS
accounts for the cutting limitation (SB).
Machining information
„ Chucking the workpiece at the spindle: Ensure that the area,
where the blank part is chucked, is premachined. Otherwise, the
cutting limitation might adversely affect the machining strategies.
„ Machining of bars: TURN PLUS does not control the bar loader
and does not move the tailstock and steady rest components. TURN
PLUS does not support workpiece adjustment between collet and
dead center during machining operations.
„ Transverse machining
„ Please note that the entries made in the machining sequence
apply to the complete workpiece and thus also to the transverse
machining of shaft ends.
„ The AWG does not machine inside areas on the rear face. If jaws
are used for clamping the shaft at the spindle, the rear face is not
machined.
„ Longitudinal machining: First the front area is machined, then the
rear area.
„ Collision prevention: If machining operations are not performed
without collisions, you can do the following:
„ Add a retraction of the tailstock, a positioning of the steady rest,
etc. to the DIN PLUS program.
„ Add cutting limits to the DIN PLUS program to avoid collisions.
„ Disable automatic machining in the AWG by assigning the
“Exclusion from machining” attribute or by defining a specific
machining location in the machining sequence.
„ Define an oversize=0 for the workpiece blank. As a consequence,
the front area is not machined (e.g. shafts cut to length and
centered shafts).