<!DOCTYPE html
  PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">

<!--
Copyright (c) 2006 UGS Corp.

All Rights Reserved.

This software and related documentation are proprietary to UGS Corp.
-->
<html>
   <head>
      <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
      <title>Engage/Retract</title>
      <script language="javaScript">
        abridged="false";
        displayConditions=new Array();
      </script>
      <link type="text/css" href="../css/main_styles.css" rel="stylesheet">
   </head>
   <body class="bodydocs" onload="top.pageLoader()" bgcolor="#FFFFFF">
      <div class="title_topic2" id="xps10_pagetitle">Engage/Retract</div>
      <hr noshade="true">
      <table cellspacing="4" align="center">
         <tr valign="top">
            <td bgcolor="#f7f7f7" colspan="1" rowspan="1">
               <p class="para_td"><a class="links" href="javascript:void(0)" onclick="top.openFile('mfgmilling/plunge_mill_ov.html');return(false);">Overview</a></p>
            </td>
            <td bgcolor="#f7f7f7" colspan="1" rowspan="1">
               <p class="para_td"><a class="links" href="javascript:void(0)" onclick="top.openFile('mfgmilling/plunge_list_op.html');return(false);">Options</a> 
               </p>
            </td>
            <td bgcolor="#f7f7f7" colspan="1" rowspan="1">
               <p class="para_td"><a class="links" href="javascript:void(0)" onclick="top.openFile('mfgmilling/plunge_rt_list.html');return(false);">Related Topics</a></p>
            </td>
         </tr>
      </table><br><div class="title_division">Engage</div>
      <p class="para_division"> Plunge Milling has a single engage and retract move. You specify a vertical engage distance (along the tool axis) above the blank. The approach move is made from the clearance/rapid plane. The engage move is made along the tool axis from the vertical clearance distance above the blank. </p><a name="plunge_retract_moves"></a><div class="title_division">Retract</div>
      <p class="para_division">You specify the <b class="uiTerm">Retract Distance</b> and <b class="uiTerm">Retract Angle</b>. The retract move is made along a 3D vector formed by the vertical <b class="uiTerm">Retract Angle</b> specified and the horizontal retract angle, which is automatically generated by the system. The horizontal retract angle moves the tool away from the tool-blank contact of the last plunge by the <b class="uiTerm">Retract Distance</b> specified.
      </p>
      <p class="para_division">This retract move is only made if the tool can freely move into air at the end of the ramp move. The departure move travels along the tool axis (z-axis) from the end of the retract move to the clearance/rapid plane.</p>
      <div class="figure">
         <p align="center"><img align="bottom" src="graphics/plunge_cut-non_anim2.gif"></p>
      </div>
      <div class="title_figure">Plunge Moves: Approach in red, Engage in yellow, cutting in cyan, retract in white, Departure in Red, Traverse in red</div>
      <div class="figure">
         <p align="center"><img align="bottom" src="graphics/plunge_retract.gif"></p>
      </div>
      <div class="title_figure">Safe Retract Move (A) Allowed, Unsafe Retract Move (B) Prevented</div>
      <table border="0">
         <tr>
            <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">In this case, the tool simply retracts back along the plunge direction.</p>
               </div>
            </td>
         </tr>
      </table>
   </body>
</html>