104 I Operating Instructions
I – 9 POSITIP 880 Turning Functions
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
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