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12 coor dinat e t ransf or mation cy cles – HEIDENHAIN iTNC 530 (340 49x-04) User Manual

Page 516

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516

8 Programming: Cycles

8.12 Coor

dinat

e

T

ransf

or

mation Cy

cles

Application

Datum tables are used for

„

frequently recurring machining sequences at various locations on
the workpiece

„

frequent use of the same datum shift

Within a program, you can either program datum points directly in the
cycle definition or call them from a datum table.

Datum shift:

Enter the number of the datum from the

datum table or a Q parameter. If you enter a
Q parameter, the TNC activates the datum number
entered in the Q parameter.

Cancellation

„

Call a datum shift to the coordinates
X=0; Y=0 etc. from the datum table.

„

Execute a datum shift to the coordinates X=0, Y=0 etc. directly with
a cycle definition.

„

Use the TRANS DATUM RESET function (see “TRANS DATUM RESET”
on page 578).

Selecting a datum table in the part program

With the SEL TABLE function you select the table from which the TNC
takes the datums:

Press the PGM CALL key to select the functions for

program call.

Press the DATUM TABLE soft key.

Enter the complete path name of the datum table and

confirm your entry with the END key.

Program a SEL TABLE block before Cycle 7 Datum Shift.

A datum table selected with SEL TABLE remains active
until you select another datum table with SEL TABLE or
through PGM MGT.

You can define datum tables and datum numbers in an NC
block with the TRANS DATUM TABLE function (see “TRANS
DATUM TABLE” on page 577).