Additional details on Slots

SA currently supports two types of slots: 

In order to use slots to define datums and checks they need to be manually identified in the annotation in order to be recognized in the evaluation process.

Marking a check as a slot triggers SA to search the surrounding surface faces for a representative slot feature. Only a single associated CAD face is necessary and additional face selections will only slow the search process.

 

Open Slots & Width Datums

In addition to a closed slot features, SA can also evaluate the position of a mid-planes or open slots. These open slots must be designated as a slot in the annotation properties using the is Slot check box. In addition, their is a requirement that 2 and only 2 parallel planar features are associated with the check. When an open slot is defined you will see the midplane displayed graphically when the check is highlighted.

In order to evaluate a slot with a material modifier a Width check must also be added to the same features. Width checks are a special case and are not the same as a Distance Between check. In order to define a Width check through the SA Toolkit a new right-click option has been added to the Distance Between check button.

A slot cannot be evaluated with a length only. It requires both a length and a width to be evaluated with a MMC condition. When both are added the most restrictive tolerance will be used.