Heidenhain iTNC 530 (340 420) Manuel d'utilisateur Page 114

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86 4 Fundamentals of NC, File Management, Programming Aids, Pallet Management
4.13 Pallet Operation with Tool-Oriented Machining
4.13 Pallet Operation with Tool-
Oriented Machining
Function
Pallet tables are used for machining centers with pallet changer: 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 datums.
Pallet tables contain the following information:
n PAL/PGM (entry obligatory):
The entry PAL identifies the pallet, FIX marks the fixture plane and
PGM is used to enter the workpiece.
n 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.
n METHOD (entry obligatory):
Entry which 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.
n 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 name for the program.
Pallet management in combination with tool-oriented
machining is a machine-dependent function. The standard
functional range will be described in the following. Refer
to your machine manual for more information.
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