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      <title>Level Angle</title>
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      <div class="title_topic2" id="xps10_pagetitle">Level Angle</div>
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      <p class="para_topic">The level angle allows you to define the orientation for the individual level cuts which are computed by the system in straight linear roughing operations. It is measured counter-clockwise from the centerline and defines the orientation and direction for the roughing linear cuts. For your convenience, an arrow indicator,  <img align="bottom" src="graphics/rose045.gif" border="0">, visually presents the cutting orientation you have chosen. A level angle of 0 coincides with the direction of the &quot;positive&quot; centerline axis. Examples for setting the level angle are illustrated in the following figure:
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      <div class="figure">
         <p align="center"><img align="bottom" src="graphics/turn_Rough_fr28.gif"></p>
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      <div class="title_figure">Examples for Level Angle Definition</div>
      <p class="para_topic">The system computes all tool motions required for roughing a cut region by taking into account the tool orientation and the level angle as defined above. In this way you have the freedom to vary cut orientation for each machining side by proper specification of a single value only - the level angle.</p>
      <p class="para_topic">You may input a value in several ways:</p>
      <ul>
         <li>
            <p class="para_item">input an angle value in the input box</p>
         </li>
         <li>
            <p class="para_item">select Level Angle and use the resulting Vector Constructor dialog to select the desired angle.</p>
         </li>
      </ul>
      <p class="para_topic">If you specify only one trim point/trim plane, level angle plays a significant role when the system searches for the cut region. Depending on which direction you choose, the system identifies a different cut region. Take the following example:</p>
      <div class="figure">
         <p align="center"><img align="bottom" src="graphics/direction.gif"></p>
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      <div class="title_figure">Cut Region Detection and Level Angle (Containment Shown in Blue)</div>
      <p class="para_topic">If you choose left to right (0) as the level angle, the system will identify  <img align="bottom" src="graphics/num_1.gif" border="0"> as the cut region. If you choose right to left (180), the system will determine  <img align="bottom" src="graphics/num_2.gif" border="0"> as the cut region.
      </p>
      <div class="title_division"> Level Angle and Direction in Ramping</div>
      <p class="para_division">With ramping cut strategies the level angle setting also determines the basic cut orientation.</p>
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               <p class="para_th">Ramping Mode</p>
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            <th colspan="1" rowspan="1" width="76%">
               <p class="para_th">Level Angle Orientation</p>
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               <p class="para_td"> <img align="bottom" src="graphics/ramp_out_every_other.gif" border="0">Ramp out on every other pass
               </p>
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            <td colspan="1" rowspan="1" width="76%">
               <p class="para_td">Every second pass is oriented along the level angle. The maximum and minimum cut depths are then calculated against the linear pass.</p>
            </td>
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         <tr valign="top">
            <td colspan="1" rowspan="1" width="23%">
               <p class="para_td"> <img align="bottom" src="graphics/ramp_in_every_other.gif" border="0">Ramp in on every other pass
               </p>
            </td>
            <td colspan="1" rowspan="1" width="76%">
               <p class="para_td">Every second pass is oriented along the level angle. The maximum and minimum cut depths are then calculated against the linear pass.</p>
            </td>
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         <tr valign="top">
            <td colspan="1" rowspan="1" width="23%">
               <p class="para_td"> <img align="bottom" src="graphics/ramp_out_first.gif" border="0">Ramp out first
               </p>
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            <td colspan="1" rowspan="1" width="76%">
               <p class="para_td">The bisector of the angle between the two ramped cuts is oriented along the level angle.</p>
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            <td colspan="1" rowspan="1" width="23%">
               <p class="para_td"> <img align="bottom" src="graphics/ramp_in_first.gif" border="0">Ramp in first
               </p>
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            <td colspan="1" rowspan="1" width="76%">
               <p class="para_td">The bisector of the angle between the two ramped cuts is oriented along the level angle.</p>
            </td>
         </tr>
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