T-FLEX Parametric CAD. Fundamentals. 2D Design
T-FLEX Parametric CAD. Fundamentals. 2D Design T-FLEX Parametric CAD. Fundamentals. 2D Design
Select the dimension and enter the new nominal value: Drawing Modification via Dimensions Then confirm the input by pressing the key or . As was already mentioned, the drawing changes only when it is possible. The command will not work correctly in the following cases: • The flag “Manually” is set in the dimension parameters, or the parameter “Dimension text” is assigned the value “No parameters”. • The referenced construction elements definition does not allow their position modifications. For example, you cannot change the value of a circle radius if the circle is tangent to three entities. • Changes in the construction entity positions caused by the dimension modification make the system unable to define the position of some element with respect to other affected entities. In all of these cases, the dimension reverts to the original value, with no changes done to the drawing. "Recalculate Dimensions to middle of tolerance field" command Besides the command that allows arbitrary modifications to dimension values, there is also a command in T- FLEX CAD to automatically recalculate dimensions to the middle of the tolerance range. This command performs a correction of nominal values for all selected dimensions in such a way as to make their values balanced about the median of their own tolerance range. The new tolerance range (also referred to as “tolerance field”, or “zone”) becomes symmetrical. This functionality can be used when adapting a 3D model to the toolpath calculation in the CNC module. 457
Fundamentals. Two-Dimensional Design 458 Warning: this action is not reversible. That means, after recalculating all dimensions in the model to the middle of their tolerance range, the reverse model recalculation is impossible. To save the original state of the drawing, you can use the command “UN: Undo changes” right after recalculating the dimensions to the middle of the tolerance range, or save the original and the recalculated models in different files. The command can be called by one of the following means: Keyboard Textual Menu Icon “Parameters|Dimensions| Recalculate to Middle of Tolerance” The following options become available in the command automenu: Recalculate Preview Operation Result Exit Dimensions are recalculated upon clicking the icon . Before that, you can review the expected result ofthe recalculation with the option . In the command properties window there are flags that control the recalculation process. When all flags are disabled, then only the dimension on the current 2D page will be recalculated (except for the dimensions on 2D projections, if such exist on that drawing page). The flags in the properties window serve to make the following adjustments: Recalculate 3D Dimensions. If this flag is set, then 3D dimensions will be recalculated along with 2D dimensions (and, therefore, with the 3D model). Recalculate Projections. By having this flag set you allow recalculating the dimensions on 2D projections. If this flag is cleared, then the dimensions created on 2D projections are not recalculated. The projections themselves are not updated either (even if the 3D model changed as a result of recalculating 3D dimensions). Please note that projections recalculation is also affected by the state of the flag “Recalculate Dimensions on All Pages”. If this flag is set, the dimensions are calculated on all 2D projections of the given model. If the flag is cleared, then recalculated are the dimensions of 2D projections located on the current 2D page only.
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- Page 454 and 455: ELEMENT REPLACEMENT Element Replace
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<strong>Fundamentals</strong>. Two-Dimensional <strong>Design</strong><br />
458<br />
Warning: this action is not reversible. That means, after recalculating all dimensions in the model<br />
to the middle of their tolerance range, the reverse model recalculation is impossible. To save the<br />
original state of the drawing, you can use the command “UN: Undo changes” right after<br />
recalculating the dimensions to the middle of the tolerance range, or save the original and the<br />
recalculated models in different files.<br />
The command can be called by one of the following means:<br />
Keyboard Textual Menu Icon<br />
<br />
“Parameters|Dimensions|<br />
Recalculate to Middle of Tolerance”<br />
The following options become available in the command automenu:<br />
Recalculate<br />
Preview Operation Result<br />
Exit<br />
Dimensions are recalculated upon clicking the icon . Before that, you can review the expected result<br />
ofthe recalculation with the option .<br />
In the command properties window there are flags that control the recalculation process. When all flags are<br />
disabled, then only the dimension on the current <strong>2D</strong> page will be recalculated (except for the dimensions on<br />
<strong>2D</strong> projections, if such exist on that drawing page). The flags in the properties window serve to make the<br />
following adjustments:<br />
Recalculate 3D Dimensions. If this flag is set, then 3D dimensions will be recalculated along with <strong>2D</strong><br />
dimensions (and, therefore, with the 3D model).<br />
Recalculate Projections. By having this flag set you allow recalculating the<br />
dimensions on <strong>2D</strong> projections. If this flag is cleared, then the dimensions<br />
created on <strong>2D</strong> projections are not recalculated. The projections themselves<br />
are not updated either (even if the 3D model changed as a result of<br />
recalculating 3D dimensions).<br />
Please note that projections recalculation is also affected by the state of the<br />
flag “Recalculate Dimensions on All Pages”. If this flag is set, the<br />
dimensions are calculated on all <strong>2D</strong> projections of the given model. If the<br />
flag is cleared, then recalculated are the dimensions of <strong>2D</strong> projections<br />
located on the current <strong>2D</strong> page only.
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