HEIDENHAIN PT 880 - Manual (Page 104)

104 I Operating Instructions
I – 9 POSITIP 880 T
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ing F
unctions
Datum Setting
Example: Setting the workpiece datum (zero point)
The datum is set to zero for the display of the Z axis. All tool data
entered are automatically referenced to this datum.
Operating mode: ACTUAL VALUE
Machine the workpiece face. Leave the cutting edge
of the tool at the face.
Press the DATUM soft key.
Cursor to the Z axis.
Enter a value, for example 0. Press ENT, then press
USE
.
Taper Calculator
Use the taper calculator to calculate the taper angle. See Fig. I.81.
Entry values:
For the taper ratio, calculation requires:
„ Radius of the taper
„ Length of the taper
From both diameters and the length, calculations of the:
„ Starting diameter
„ End diameter
„ Length of the taper
Fig. I.81 TAPER CALCULATOR form