HEIDENHAIN CNC Pilot 4290 - Manual (Page 340)

6 TURN PLUS 328
6.16.7 Full-Surface Machining
You describe the geometry of the blank and finished
part, and TURN PLUS generates the working plan for
the complete workpiece.
Depending on the machining sequence, after machining
the front side TURN PLUS activates an expert pro-
gram for rechucking (machining parameter 21):
■ ”Rechuck – Full-surface machining”: the opposing
spindle takes over the workpiece (entry of ”UP-
UMKOMPL”)
■ ”Parting – Full-surface machining”: Bar machining –
the workpiece is parted and taken over by the
opposing spindle (entry of ”UP-UMKOMPLA”)
The NC program generated includes front and back
machining (including the drilling, milling and inside
machining), calling the expert program, and the
clamping information of both setups (see also: ”
4.18.3
Full-Surface Machining”)
Preconditions for full-surface machining
■ Program header: Assignment of spindle to slide for
the 2nd setup (input fields: ”2nd setup of spindle ..
With slides ..”).
■ Machining sequence: Entry ”Main machining”
RECHUCK or PART after machining the front side
(see ”
6.13.2 Machining Sequence”).
For the back machining you can:
■ Enter the machining operations after RECHUCK/
PARTING
■ Use the same machining sequence as for front
side machining (no further entries after RECHUCK/
PARTING.
Continued
6.16.6 Drilling
Drilling without definition of fits
TURN PLUS selects tools that permit machining to
finished dimensions. First it searches for twist drills,
then for boring bars with indexable inserts.
Drilling with definition of fits
TURN PLUS machines the bore hole in two steps.
■ Drilling with smaller diameter than the nominal
diameter of the hole.
■ ”Reaming” to finished dimension
6.16 Mac
hining Inf
or
mation
TURN PLUS only evaluates the information ”with/without
fit.” The type of fit (H6, H7, ..) is of no significance.