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      <title>Set Trim Planes</title>
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      <div class="title_topic3" id="xps10_pagetitle">Set Trim Planes</div>
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      <table base="file:///D:/perforce/workdocs/XPS/products/nx/nx5/english/tdoc/mfgturning/entities/turn_cont_trim_planes.xml" bgcolor="#f4f4f4" cellspacing="0" width="100%" align="center">
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               <p class="para_td"> <a class="links" href="javascript:void(0)" onclick="top.openFile('mfgturning/04topic_14.html');return(false);">Setting Trim Points</a></p>
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               <p class="para_td"> <a class="links" href="javascript:void(0)" onclick="top.openFile('mfgturning/06topic_30.html');return(false);">Setting Trim Angles</a></p>
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               <p class="para_td"> <a class="links" href="javascript:void(0)" onclick="top.openFile('mfgturning/turn_cont_comb_point_plane.html');return(false);">Combining Trim Point &amp; Trim Plane Containment</a></p>
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               <p class="para_td"> <a class="links" href="javascript:void(0)" onclick="top.openFile('mfgturning/turn_cont_dial_opt2.html');return(false);">Containment Dialog Options</a></p>
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      </table><br><p class="para_topic">A trim plane limits machining to one side of a plane. There are three possible combinations of trim planes that you can use. </p>
      <ul>
         <li>
            <p class="para_item">one trim plane specified (axial or radial) - the part is machined up to that limit</p>
         </li>
         <li>
            <p class="para_item">two trim planes specified - the machining takes place between the two limits, as shown in the following figure</p>
         </li>
         <li>
            <p class="para_item">three trim planes specified - the machining is confined to the area enclosed by them</p>
         </li>
      </ul>
      <div class="figure">
         <p align="center"><img align="bottom" src="graphics/turn_cuttinau14.gif"></p>
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      <div class="title_figure">Example of Containment Using Trim Planes where</div>
      <table base="file:///D:/perforce/workdocs/XPS/products/nx/nx5/english/tdoc/mfgturning/entities/turn_cont_trim_planes.xml" cellspacing="0" align="center">
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               <p class="para_td">A =</p>
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               <p class="para_td">Plane 1</p>
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            <td colspan="1" rowspan="1">
               <p class="para_td">B =</p>
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            <td colspan="1" rowspan="1">
               <p class="para_td">Plane 2</p>
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      </table><br><p class="para_topic">The system treats containment trim planes with respect to operation stock in the same way as it processes adjacent geometry, i.e., cuts are continuously and smoothly made in cases where trim planes only partially coincide with the part surface and operation stock has been defined.</p>
      <p class="para_topic">If you set trim planes, the system calculates the cut region based on the intersection of the trim plane and the in-process workpiece. It begins cutting at that point. This can lead to unexpected results in the following situation:</p>
      <div class="figure">
         <p align="center"><img align="bottom" src="graphics/cont_trim_planes_1.gif"></p>
      </div>
      <div class="title_figure">Part  to be Cut with Tool</div>
      <p class="para_topic">In the above figure, the blank extends beyond the part, but you don't want to cut the face, so you can set radial and axial containments as follows:</p>
      <div class="figure">
         <p align="center"><img align="bottom" src="graphics/cont_trim_plane_2.gif"></p>
      </div>
      <div class="title_figure">Radial  and Axial  Containments with Recognized Cut Region  </div>
      <p class="para_topic">The cut region begins at the intersection between the blank and the axial trim plane. With the given tool, the system only recognizes the purple area as the cut region. If you wish to cut the entire region above the radial trim plane, you have to remove the axial trim plane or move it as follows:</p>
      <div class="figure">
         <p align="center"><img align="bottom" src="graphics/cont_trim_planes_3.gif"></p>
      </div>
      <div class="title_figure">The Expanded Cut Region  after Moving Axial Trim Plane  </div>
      <div class="title_division">Using Trim Planes to Recognize Rest Material</div>
      <p class="para_division">In the following situation, the system would not recognize the material &nbsp; <img align="bottom" src="graphics/num_1.gif" border="0"> left over from a previous operation due to the part shape and the shape of the tool. 
      </p>
      <div class="figure">
         <p align="center"><img align="bottom" src="graphics/trim_points_a.gif"></p>
      </div>
      <div class="title_figure">Rest Material Not Identifiable </div>
      <p class="para_division">To overcome this situation, you can set trim planes  <img align="bottom" src="graphics/num_2.gif" border="0"> that force the system to ignore all geometry beyond the trim planes as follows:
      </p>
      <p align="center"><img align="bottom" src="graphics/trim_p_2_b.gif"></p>
      <p class="para_division">Now, the system recognizes the rest material and can remove it. You can also use trim points to achieve this effect. See  <a class="links" href="javascript:void(0)" onclick="top.openFile('mfgturning/04topic_14.html');return(false);">Setting Trim Points</a>.
      </p>
      <div class="title_division"> Setting Trim Planes:</div>
      <ol type="1" start="1">
         <li>
            <p class="para_item"> <a class="links" href="javascript:void(0)" onclick="top.openFile('mfgturning/turn_cont_dial_opt2.html');return(false);">Open the Containment dialog</a></p>
         </li>
         <li>
            <p class="para_item">In the Trim Planes section, select up to two radial and/or two axial trim planes by checking the desired check box. </p>
         </li>
         <li>
            <p class="para_item">Designate the position of the plane by either:</p>
         </li>
      </ol>
      <ul>
         <li>
            <p class="para_item">inserting the distance from the x or y axis in the input box or</p>
         </li>
         <li>
            <p class="para_item">clicking the Radial 1/2 or Axial 1/2 buttons. The familiar Point Constructor dialog will assist you with placing the desired trim plane.</p>
         </li>
      </ul>
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            <td valign="top" align="left"><img align="left" src="../graphics/note.gif" alt="Note" title="Note"></td>
            <td valign="bottom" align="left" width="100%">
               <div class="para_note">
                  <p class="para_note_body">Inserting a distance when setting a trim plane causes the containment to be associative to the MCS. If you use a smart point to place the trim plane, the containment will not move if the MCS is moved.</p>
               </div>
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         </tr>
      </table>
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