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      <title>Implementing Design Association</title>
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      <div class="title_topic2" id="xps10_pagetitle">Implementing Design Association</div>
      <hr noshade="true">
      <p class="para_topic">PDW keeps the&nbsp;design association between sheet metal part, process design, structure design, pocket and drawing by leveraging NX's latest technologies, such as&nbsp;Knowledge Fusion,&nbsp;WAVE, and smart objects.</p>
      <p class="para_topic">A progressive-die design assembly structure and a brief explanation are shown below. Note that the characters between the brackets &lt;&gt; are part attributes.</p>
      <p align="center"><img align="bottom" src="graphics/pdw_assoc_001.gif"></p>
      <p class="para_topic">PDW maintains the design association; you can go back to change sheet metal parts or upstream design at any stage.&nbsp; Because a typical progressive die assembly may contain from 500 - 1500 components or more, it is not practical&nbsp;to let&nbsp;the system automatically propagate all design changes downstream.&nbsp;&nbsp;PDW lets&nbsp;you control the updates.</p>
      <p class="para_topic">The following are several tips for implementing design updates:</p>
      <ul>
         <li>
            <p class="para_item">Sheet Metal Part change (for example, change a feature dimension, add or delete a feature.)</p>
            <ul>
               <li>
                  <p class="para_item">If you've already created a blank, then click the Update Blank button in the Blank Generator dialog to update your blank. </p>
               </li>
               <li>
                  <p class="para_item">If you want to adjust your blank layout, use the Blank Layout Design module to edit it. </p>
               </li>
               <li>
                  <p class="para_item">If you've already designed scraps, to check if there is any distorted scrap, use the Scrap Design module to adjust scrap profile sketch. </p>
               </li>
               <li>
                  <p class="para_item">If you've already&nbsp;initialized a strip layout, use the Strip Layout module. If there are Feature Pre-process definitions, toggle on the Sheet Metal Part button, and click Apply to update a strip layout. (rarely used now)</p>
               </li>
               <li>
                  <p class="para_item">If you've&nbsp;already designed insert groups, use the Insert Group Design module to check if there are any insert groups that need to be repositioned or to have their dimensions adjusted.</p>
               </li>
            </ul>
         </li>
         <li>
            <p class="para_item">Process Definition change (rarely used now)</p>
            <ul>
               <li>
                  <p class="para_item">If the change will affect blank size, then click the  Update Blank button in the Blank Generator&nbsp;dialog to update your blank.&nbsp; </p>
               </li>
               <li>
                  <p class="para_item">If you've already designed scraps, to check if there are any distorted scraps, use the Scrap Design module adjust scrap profile sketch. </p>
               </li>
               <li>
                  <p class="para_item">If you've already&nbsp;initialized strip layouts, go to the Strip Layout module, toggle on the  Process Definition button and click Apply to update the strip layout. </p>
               </li>
               <li>
                  <p class="para_item">If you've&nbsp;already designed insert groups, to check if there are any insert groups that need to be deleted, use the Insert Group Design module.</p>
               </li>
            </ul>
         </li>
         <li>
            <p class="para_item">Blank Layout change </p>
            <ul>
               <li>
                  <p class="para_item">If the blank orientation changes,&nbsp;go to the Strip Layout module, check the  Blank toggle button, and click Apply to update the strip layout. Orientation</p>
               </li>
               <li>
                  <p class="para_item">If the width changes, the system automatically does the updating.</p>
               </li>
            </ul>
         </li>
         <li>
            <p class="para_item">Scrap change </p>
            <ul>
               <li>
                  <p class="para_item">Is handled automatically in Strip Layout</p>
               </li>
               <li>
                  <p class="para_item">If Piercing Insert is already designed, go to Piercing Design Module, click Update Position of Piercing Insert as necessity or/and re-link the changed scrap and related piercing insert.  </p>
               </li>
            </ul>
         </li>
         <li>
            <p class="para_item">Pitch, Feeding Direction, Station Number change </p>
            <ul>
               <li>
                  <p class="para_item">If strip layout is already initialized, go to the Strip Layout module, check&nbsp;the corresponding toggle button, and click the Apply to update the strip layout. </p>
               </li>
               <li>
                  <p class="para_item">Click Update Position of Piercing Insert in Piercing Design Module.</p>
               </li>
               <li>
                  <p class="para_item">Click Update Position of Insert Groups from the Tools tab of Insert Group to update any related insert groups positions. If the related pockets have been created, they are automatically updated.&nbsp;But it is better for you to check them and, if necessary, do some updating&nbsp;using the Insert Group module. </p>
               </li>
            </ul>
         </li>
         <li>
            <p class="para_item">Move Process, Insert idle station, etc. in Strip Layout </p>
            <ul>
               <li>
                  <p class="para_item">Click Update Position of Piercing Insert in Piercing Design Module.</p>
               </li>
               <li>
                  <p class="para_item">Click Update Position of Insert Groups from the Tools tab of Insert Group to update any related insert groups positions. If the related pockets have been created, they are automatically updated. &nbsp;But it is better for you to check them and, if necessary, do some updating using the Insert Group module. </p>
               </li>
            </ul>
         </li>
      </ul>
      <p class="para_topic">Updating performance depends on the complexity of the sheet metal part, the assembly size, and the changed contents. If a large amount of change has occurred, we suggest you start a new project. &nbsp;PDW can finish new projects very quickly and easier&nbsp;if you already know the design procedure.</p>
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