HEIDENHAIN CNC Pilot 4290 - Manual (Page 343)

HEIDENHAIN CNC PILOT 4290 331
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.
■ Machining operations on shaft ends
■ Note that the machining sequence defined applies to the entire
workpiece, including machining operations on shaft ends.
■ The AWG does not machine inside contours on rear ends. 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.
■ Avoiding collisions
Collisions during machining operations can be avoided as follows:
■ Add the retraction of the tailstock, the positioning of the collet,
etc., to the DIN PLUS program.
■ Add a cutting limitation to the DIN PLUS program.
■ Prevent the automatic execution of machining operations by
assigning the ”Do not machine” attribute or by specifying the
machining location in the machining sequence.
■ Define for the blank part: Oversize = 0. As a consequence, the
front area is not machined (e.g. shafts cut to length and centered
shafts).
6.16 Mac
hining Inf
or
mation