I – 4 distance-t o-go – HEIDENHAIN PT 880 User Manual

Page 40

I Operating Instructions

I – 4 Distance-T

o-Go

Example: Drilling by traversing to display value zero

Enter the coordinates in incremental dimensions. These are indicated
in the following (and on the screen) with a preceding I. The datum is
the workpiece zero. See Fig. I.33 & Fig. I.34.

Hole

at: X = 20 mm / Y = 20 mm

Distance from hole

to hole

: IX = 30 mm / IY = 30 mm

Hole depth: Z = –12 mm

Operating mode: DISTANCE-TO-GO

Select an axis key: X axis.

Enter nominal position value for hole

: X = 20 mm

and press ENT. Cursor will move to the Y axis field.

Enter nominal position value for hole

: Y = 20 mm

and press ENT. Cursor will move to the Z axis field.

Enter the nominal position value for the hole depth:
Z = –12 mm The graphic positioning aid for the Z axis
is displayed. Press USE soft key.

Pre-position the drill over the first hole. Traverse Z
axis until the display value is zero. The square in the
graphic positioning aid is now centered between the
two triangular marks.

Retract the drill in the tool axis (Z).

Once the axis is moved to zero it will increment to
next block.

Press the NEXT BLOCK soft key.

Select an axis key: X axis.

Fig. I.33 Drilling example

Fig. I.34

NOMINAL POSITION VALUE