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fix SoftNcRunner GM code normalization.

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iamboss
2026-05-08 22:17:04 +08:00
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App/wwwroot/HiAPI-docsite/manual/analysis/machinability.html
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<h1 id="evaluating-process-machinability">Evaluating Process Machinability</h1>
<p>The <strong>machinability time-series chart</strong> can be used to evaluate tool breakage risk during machining.</p>
<p>Tool breakage occurs when any of the following exceeds 100% and persists for longer than one simulation step: <strong>Yielding Stress Ratio</strong>, <strong>Max Spindle Torque Ratio</strong>, or <strong>Max Spindle Power Ratio</strong>.
<p>Tool breakage occurs when any of the following exceeds 100% and persists for longer than one simulation step: <strong>Yielding Stress Ratio</strong> <small>[<a class="xref" href="../../api/Hi.MachiningSteps.MachiningStep.html#Hi_MachiningSteps_MachiningStep_YieldingStressRatio">YieldingStressRatio</a> (API)]</small>, <strong>Max Spindle Torque Ratio</strong> <small>[<a class="xref" href="../../api/Hi.MachiningSteps.MachiningStep.html#Hi_MachiningSteps_MachiningStep_MaxSpindleTorqueRatio">MaxSpindleTorqueRatio</a> (API)]</small>, or <strong>Max Spindle Power Ratio</strong> <small>[<a class="xref" href="../../api/Hi.MachiningSteps.MachiningStep.html#Hi_MachiningSteps_MachiningStep_MaxSpindlePowerRatio">MaxSpindlePowerRatio</a> (API)]</small>.
If the value significantly exceeds 100% — roughly speaking, above 200% — tool breakage can occur even without sustained duration.</p>
<blockquote>
<p><strong>Note</strong>: The default simulation uses per-revolution milling mode, where one simulation step equals one spindle revolution.</p>
@@ -96,14 +96,15 @@ If the value significantly exceeds 100% — roughly speaking, above 200% — too
<p><strong>Yielding Stress Ratio</strong> is a percentage indicator with the tool material's breakage force as the denominator. The numerator is the simulation step's absolute force <a class="xref" href="../../api/Hi.MachiningSteps.MachiningStep.html#Hi_MachiningSteps_MachiningStep_MaxAbsForce_N">MaxAbsForce_N</a><small>(API)</small>. Compared to using the absolute force value directly as a limit, the ratio incorporates tool material mechanics and more accurately reflects the tool's actual safety margin. The optimization target force <a class="xref" href="../../api/Hi.MachiningProcs.RuntimeApi.html#Hi_MachiningProcs_RuntimeApi_OptPreferedForce_N">OptPreferedForce_N</a><small>(API)</small> represents the desired MaxAbsForce_N after optimization.</p>
<p>For small tools, breakage is typically caused by insufficient tool force capacity, and breakage is based on the <strong>Yielding Stress Ratio</strong>.</p>
<p>For small-to-medium tools, breakage is typically caused by insufficient spindle performance, and breakage is based on the <strong>Max Spindle Torque Ratio</strong> or <strong>Max Spindle Power Ratio</strong>.
When cutting resistance exceeds spindle performance, the machine feed rate remains constant but the spindle speed continuously decreases, causing the feed per tooth to continuously increase, which drives cutting forces to spike until tool breakage or machine stoppage.</p>
When cutting resistance exceeds spindle performance, the machine feed rate remains constant but the spindle speed continuously decreases, causing the feed per tooth to continuously increase, which drives cutting forces to spike until tool breakage or machine stoppage.
For the underlying boundary curves and how each ratio's denominator is computed at the current rpm, see <a href="spindle-capability.html">Spindle Capability</a>.</p>
<div class="NOTE">
<h5>Note</h5>
<p><strong>Tool Breakage Solutions</strong></p>
<p>Modify the toolpath to reduce cutting width/depth, or use HiNC's optimization feature to adjust feed rates, bringing the <strong>Yielding Stress Ratio</strong>, <strong>Max Spindle Torque Ratio</strong>, and <strong>Max Spindle Power Ratio</strong> below 100%.</p>
</div>
<h2 id="thermal-plastic-deformation-of-cutting-edge">Thermal Plastic Deformation of Cutting Edge</h2>
<p>If the <strong>Thermal Yield Ratio</strong> exceeds 100%, thermal plastic deformation of the cutting edge occurs, accelerating wear.
<p>If the <strong>Thermal Yield Ratio</strong> <small>[<a class="xref" href="../../api/Hi.MachiningSteps.MachiningStep.html#Hi_MachiningSteps_MachiningStep_ThermalYieldRatio">ThermalYieldRatio</a> (API)]</small> exceeds 100%, thermal plastic deformation of the cutting edge occurs, accelerating wear.
Unlike the Yielding Stress Ratio, Max Spindle Torque Ratio, and Max Spindle Power Ratio, this is a long-term indicator — exceeding 100% does not cause immediate effects.</p>
<div class="NOTE">
<h5>Note</h5>