Workpiece Datum; Units Of Measure - HEIDENHAIN 548431-05 User Manual

Introduction and fundamentals | Fundamentals

Workpiece datum

To machine a workpiece, it is easier to enter all input data with
respect to a zero point located on the workpiece. By programming
the zero point used in the workpiece drawing, you can take the
dimensions directly from the drawing, without further calculation
(dimensioning origin). This point is the workpiece datum. The
workpiece datum is designated with the letter W.

Units of measure

You can program the control either in the
The units of measurement listed in the table below apply to all
inputs and displays.
Dimensions
Coordinates
Lengths
Angle
Spindle speed
Cutting speed
Feed per revolution
Feed per minute
Acceleration
HEIDENHAIN | MANUALplus 620 | User's Manual | 12/2017
metric or inch system.
Metric Inches
mm inch
mm inch
Degrees Degrees
rpm rpm
m/min ft/min
mm/rev inch/rev
mm/min inch/min
m/s ft/s
2 2
1
55