Heidenhain ND 522 User Manual download pdf (Page 61)

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I - 4 Turning Specific Operations

Datum Hard key

See "Datum Hard key" on page 35 for basic information. Datum

settings define the relationships between the axis positions, and the

display values. For most lathe operations there is only one X-axis

datum, the center of the chuck, but it may be helpful to define

additional datums for the Z-axis. The table can hold up to 10 datum

points. The easiest way to set datum points is to touch a workpiece at

a known diameter, or location, then enter that dimension as the value

that the display should be showing

Example: Setting a workpiece datum.

Axis sequence in this example: X - Z

Preparation:

Call the tool data by selecting the tool which being used to touch the

workpiece.

Press the DATUM hard key.

The cursor will be in the DATUM NUMBER field.

Enter the datum number, and press the DOWN

ARROW key to go to the X AXIS field.

Touch the workpiece at point 1.

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Heidenhain ND 522 User Manual Page 61