174 lines
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174 lines
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<h1 id="building-virtual-machine-tools">Building Virtual Machine Tools</h1>
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<p>Complete the following steps to build and use virtual machine tools:</p>
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<ol>
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<li><p>Use the mechanism builder to create the topological structure.</p>
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<ol>
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<li>Specific <code>Branch</code> names in the topology structure need to be set with corresponding motion axis keywords.
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<ul>
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<li>Linear motion axis keywords corresponding to motion modes are <code>X</code>, <code>Y</code>, <code>Z</code>.</li>
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<li>Rotary motion axis keywords corresponding to motion modes are <code>A</code>, <code>B</code>, <code>C</code>.</li>
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</ul>
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</li>
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<li>Specific <code>Anchor</code> names in the topology structure need to be set with corresponding keywords.
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<ul>
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<li>Keyword <code>O</code> is the ground anchor.</li>
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<li>Keyword <code>base</code> is the base.</li>
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<li>Keyword <code>t</code> is the tool-end anchor. Used for connecting tools.</li>
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<li>Keyword <code>w</code> is the worktable-end anchor. Used for connecting fixtures or workpieces.</li>
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</ul>
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</li>
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</ol>
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<blockquote>
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<p><strong>Note</strong></p>
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<p>Keywords are case-sensitive.</p>
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</blockquote>
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</li>
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<li><p>Set geometric shapes for anchors. This is optional.</p>
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</li>
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<li><p>Save the topology structure as a machine tool file.</p>
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</li>
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</ol>
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<h2 id="best-practices">Best Practices</h2>
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<p>The most convenient approach is to assemble the machine in CAD software, position the moving elements at the machine origin<a id="fnref:1" href="#fn:1" class="footnote-ref"><sup>1</sup></a>, then:</p>
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<ul>
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<li>Export individual main component STL files from the <strong>same coordinate system</strong>. Then set these STLs into anchors.</li>
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<li>Measure the coordinates of tool-end anchor, worktable-end anchor, and any point on the rotary motion axis pivot relative to the output coordinate system in CAD software, then input these coordinates into the topology structure.</li>
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<li>Due to relative motion, the motion axis direction settings from base to worktable-end are generally negative.</li>
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</ul>
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<blockquote>
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<p>Too many STL meshes will reduce software opening speed and collision detection speed.</p>
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</blockquote>
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<h2 id="example-small-five-axis-vertical-milling-machine">Example: Small Five-axis Vertical Milling Machine</h2>
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<p>Example: <a href="machine-tool-img/B1.zip">B1.zip</a></p>
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<p>Target virtual milling machine:
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<img src="machine-tool-img/B1_anchors.png" alt="B1-with-anchors"></p>
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<p>Topology structure:
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<img src="machine-tool-img/B1-topo.en.png" alt="B1-topo"></p>
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<h2 id="building-horizontal-machine-tools">Building Horizontal Machine Tools</h2>
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<ol>
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<li>Create topology structure according to machine tool motion axis coordinates.</li>
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<li>Lay down the machine: set rotation in the connection between ground anchor and machine base anchor, axis direction (0,1,1)(must be normalized), angle 180 degrees.</li>
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</ol>
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<div class="footnotes">
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<hr>
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<ol>
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<li id="fn:1">
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<p>Machine Origin is the position where all machine coordinates (MC, Machine Coordinate) are 0, generally the home position.<a href="#fnref:1" class="footnote-back-ref">↩</a></p>
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</li>
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</ol>
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</div>
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