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T-FLEX Parametric CAD. Fundamentals. 2D Design

T-FLEX Parametric CAD. Fundamentals. 2D Design

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Dimensions<br />

Besides, special symbols can be entered in the text strings via . To do this, click inside a text<br />

string input box and press . Then, select the desired symbol and hit .<br />

«Tolerance» section<br />

Special symbols are various conventional textual and drawing notations. The symbols are<br />

represented by the textual font used in the parameter dialog box. On selecting a special symbol<br />

from the dialog box, it will be entered in the parameter string input box as a double percent<br />

character (%%) followed by the symbol code. However, upon placing the cursor into the parameter<br />

string which contains special symbols, a popup tooltip with a real image of the line contents will<br />

appear on the screen. On the drawing the special symbols will be also displayed precisely.<br />

Note that the special symbols can be used as part of any parameter, which is a textual string, for<br />

various system elements.<br />

This section of the properties window defines the tolerance zones and<br />

deviation limits.<br />

The “Text” parameter, which is coming first in the section, defines what<br />

parameters will be displayed together with the dimension nominal value:<br />

Nominal. Only the dimension value is displayed.<br />

Nominal + Deviations. The deviation limits are displayed<br />

next to the dimension value string.<br />

Nominal + Tolerance. The tolerance notation will be<br />

displayed next to the dimension value string.<br />

All parameters. In this case, both the tolerance notation<br />

and the deviation limits are displayed.<br />

Limits (ANSI standart). The dimension value string is<br />

composed of the two main values, each being the sum of<br />

the dimension value and the corresponding deviation<br />

limit.<br />

Deviations can be defined manually or calculated automatically based on the specified tolerance zone.<br />

Automatic deviations calculation is used by default. The change from the manual setting to the automatic is<br />

done by toggling the “Deviations” flag (when the flag is off, the deviations are calculated automatically,<br />

when it is on – those are defined manually).<br />

When using the automatic mode of calculating tolerances, you just need to specify the tolerance zone. Please<br />

note that the values of the calculated deviations depend on the measurement units defined in the<br />

“Customize|Status…” command menu. Automatic calculation of deviations works only for the millimeters<br />

or inches settings.<br />

When the dimension value is modified, the deviations populated from tolerances will be adjusted<br />

automatically.<br />

A variable can be entered in place of a deviation value just like in any other numerical field.<br />

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