HEIDENHAIN ND 1300 VED and Crosshair Systems User Manual

Page 111

Measuring

Probing slots
Five probed points are required to measure a slot. The five points must be probed in a prescribed pattern,

and must be probed in clockwise or counterclockwise order.

As shown above, the correct pattern of points probed around the slot is:

• Two points well distributed along one long side, followed by

• One point on the closest end, followed by

• One point on the approximate center of the second long side, followed by

• The last point on the remaining end

CAUTION

Probing a different pattern of points, or probing out of either clockwise or counter-

clockwise order will result in erroneous slot measurements.

When the slot is probed as described above, Measure Magic will assign the correct feature. However,

occasionally Measure Magic will assign the wrong feature type to the data. If the wrong feature type is

assigned, it can easily be changed by selecting the correct feature from a menu of alternatives in the DRO

window.

Measurement results are shown in the Features list, View window and DRO window. Results are also

shown in the DRO overlay. The feature graphic in the View window shows the feature and the points used

to define it. The DRO window shows the number of points probed, the coordinate location of the center of

the slot, the slot length, the slot width and the angle of the slot center line with respect to the skew axis.

Touch the feature type...

to display the menu of alternative

types

Probed points are shown in the

View window

Probing and Measuring Features