HEIDENHAIN iTNC 530 (340 49x-03) ISO programming - Manual (Page 167)

HEIDENHAIN iTNC 530 167
4.15 P
allet Oper
ation with T
ool-Or
ient
ed Mac
h
ining
4.15 Pallet Operation with Tool-
Oriented Machining
Function
Pallet tables are used for machining centers with pallet changers: The
pallet table calls the part programs that are required for the different
pallets, and activates datum shifts or datum tables.
You can also use pallet tables to run in succession several programs
that have different reference points.
Pallet tables contain the following information:
„ PAL/PGM (entry obligatory):
The entry PAL identifies the pallet, FIX marks the fixture level and PGM
is used to enter the workpiece.
„
W-STATE:
Current machining status. The machining status is used to
determine the current stage of machining. Enter BLANK for an
unmachined (raw) workpiece. During machining, the TNC changes
this entry to INCOMPLETE, and after machining has finished, to
ENDED.
The entry EMPTY is used to identify a space at which no
workpiece is to be clamped or where no machining is to take place.
„
METHOD (entry obligatory):
Entry that determines the method of program optimization.
Machining is workpiece-oriented if WPO is entered. Machining of the
piece is tool-oriented if TO is entered. In order to include subsequent
workpieces in the tool-oriented machining, you must enter CTO
(continued tool oriented). Tool-oriented machining is also possible
with pallet fixtures, but not for multiple pallets.
„
NAME (entry obligatory):
Pallet or program name. The machine tool builder determines the
pallet name (see Machine Manual). Programs must be stored in the
same directory as the pallet table. Otherwise you must enter the full
path and name for the program.
„
PRESET (entry optional):
Preset number from the preset table. The preset number defined
here is interpreted by the TNC either as a pallet datum PAL in the
PAL/PGM
) column or as a workpiece datum (PGM entry in the PAL/PGM)
line.
„ DATUM (entry optional):
Name of the datum table. The datum table must be stored in the
same directory as the pallet table. Otherwise you must enter the full
path name for the datum table. Datums from the datum table can be
activated in the NC program with Cycle 7 DATUM SHIFT.
Pallet management in combination with tool-oriented
machining is a machine-dependent function. The standard
functional range will be described below. Refer to your
machine manual for more information.