## Creating an Auto Round Slot

The Round Slot option allows you to define a round slot measurement. This measurement type is particularly useful when you do not want to measure a series of lines and circles, or construct intersections and midpoints from them. The minimum number of hits needed to measure a round slot is six.

Round Slot with 6 Minimum Hits

To access the Round Slot option, access the Auto Feature dialog box for a Round Slot (Insert | Feature | Auto | Round Slot).

Auto Feature dialog box - Round Slot

With the dialog box open, depending on your situation, use one of these methods to create the feature:

Creating by Using Surface Data on the Screen

To generate a round slot measurement using surface data:

1. Click the Surface Mode icon .

2. Using the mouse, simply click once on any portion of the slot displayed in the Graphics Display window.

3. Make any other modifications to the dialog box and the Probe Toolbox as needed.

4. Click Create.

Creating by Using Surface Data with the CMM

To generate a round slot measurement using surface data with the CMM, simply touch three times on each arc.

The Find Noms option should be selected from the Mode list for this measurement method. See the "Mode List" topic in the PC-DMIS Core documentation for additional information on nominals.

Creating by Using Wire Frame Data on the Screen

Wire frame CAD data can also be used to generate a round slot. Using the animated probe, simply click once near any wire of the slot displayed in the Graphics Display window.

Creating by Using Wire Frame Data with the CMM

To generate a round slot measurement using wire frame data with the CMM, simply touch one three times on each arc.

Note: If the CAD data defining the ends of the slot is specifically a CIRCLE or ARC type (i.e., an IGES entity 100), PC-DMIS will automatically take two additional hits on the arc. If both ends are of this type, then one touch on each arc is sufficient to measure this feature type.

The Find Noms option should be selected from the Mode list for this measurement method. See the "Mode List" topic in the PC-DMIS Core documentation for additional information on nominals.

Creating without Using CAD Data

If the round slot is to be generated without the use of CAD data, touch three times on each arc (for a total of six hits).

Creating by Keying in the Data

This method allows you to key in the desired X, Y, Z, I, J, K values for the round slot.

1. Type in the desired X, Y, Z, I, J, K values for the feature into the dialog box.

2. Click Create to insert the feature into your part program.

See the "Mode List" topic in the PC-DMIS Core documentation for additional information on nominals.