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HEIDENHAIN ND 1300 VED and Crosshair Systems User Manual

Page 97

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Measuring

2 Perform the skew alignment by probing 2 or

more points well distributed along the entire length

of the desired part reference edge. Press the Enter

key to enter each point. Press the Finish key to com-

plete the Skew measurement. The skew line feature

will be added to the Features list in blue.

Creating a datum zero point

Creating the datum zero point is the final step in establishing a valid Cartesian or polar coordinate system

for subsequent measurements. The datum zero point will be used as the origin of Cartesian or polar sys-

tems. The datum zero point can be positioned in any location that satisfies the measurement requirements

of the user and can be created by probing a point or by constructing a point from parent features.

Probing a datum zero point
The datum zero point can sometimes be created directly by probing a point. Simple probing is more often

possible when the part is precisely aligned in the stage.

To probe a datum zero point:

1 Touch the Point Measure icon.

2 Use the crosshair to probe the desired point for the datum zero, and then

press the Finish key. The point will be added to the Features list.

Two points are probed on the bottom edge to perform

a skew alignment on the X-axis

Establishing a Measurement Reference