HiNC-2025-win-desktop-Deploy/App/wwwroot/HiAPI-docsite/manual/setup/cutter.html

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          <h1 id="cutter-configuration-notes">Cutter Configuration Notes</h1>

<h2 id="cutter-body-settings">Cutter Body Settings</h2>
<h3 id="cutter-body-types">Cutter Body Types</h3>
<p>Cutter body types include:</p>
<ul>
<li><strong>Milling</strong>
Any tool that machines by rotation is classified as milling in HiNC, including drilling and boring.</li>
<li><strong>Freeform Subtraction</strong>
Cutting tools, EDM (electrical discharge machining) dies.</li>
</ul>
<h3 id="milling-tool-description-parameters">Milling Tool Description Parameters</h3>
<ul>
<li>Material: Shank material, cutter body material, (multi-layer) coating material and thickness.</li>
<li>Cutting edge rotation envelope: Can use simplified parameters (APT) or a custom ZR table.</li>
<li>Simplified (yield-equivalent) edge center rotation envelope:
<ul>
<li>Solid space ratio of the cutting edge rotation envelope.</li>
<li>Custom ZR table.</li>
</ul>
</li>
<li>Clamping end (non-cutting zone) shape: Custom ZR table.</li>
<li>Per-tooth geometry (including side edges and bottom edges):
<ul>
<li>Simplified parameters: Helix angle position, rake angle, relief angle.</li>
<li>Custom per-Z value: Helix angle position, rake angle, relief angle, radius length.</li>
</ul>
</li>
<li>Hone radius, tool weight, insert weight, and (thermal-equivalent) thickness.</li>
</ul>
<blockquote>
<p>For information on measuring rake angle and relief angle, refer to <a href="../analysis/radial-angle-measurement.html">Radial Angle Measurement</a>.</p>
</blockquote>
<h3 id="upper-beam-clamping-end--shank-geometry">Upper Beam (Clamping End / Shank) Geometry</h3>
<p>The <em>upper beam</em> is the cutter's shank / body above the flute — the non-cutting,
clamping zone. It can be modeled with several geometry types; the two common
choices are:</p>
<ul>
<li><p><strong>Cylindroid</strong> — an explicit ZR table. You author every <code>(Z, r)</code> pair, so the
shank radius (and any stepped / necked profile) is whatever you type in. This
faithfully reproduces a <em>known</em> shank, but every value is data you must supply.</p>
</li>
<li><p><strong>Extended Cylinder</strong> — a cylinder whose <strong>start (bottom) profile is driven by
the flute</strong> and whose only parameter is the total length. Its radius follows
the cutter (flute-top) radius automatically, so it needs <strong>no shank
measurements</strong> — only a length long enough to reach the holder.</p>
<p>⚠ <strong><code>FullLength</code> is the beam's FULL length measured from <code>Z=0</code> (the cutter
tip), so it includes the flute span</strong> — it is <em>not</em> the remaining segment from
the flute top to the exposed end. It must therefore be <strong>larger than the flute
height</strong>: e.g. flute height 20 mm and 10 mm of shank above it → <code>FullLength = 30</code>, not 10. A value at or below the flute height inverts the beam solid;
thermal physics then cannot build its shank shell layers and reports a
<code>Cutter-UpperBeam--BelowFluteHeight</code> configuration error at tool change (the
web editor rejects such a value outright).</p>
</li>
</ul>
<p><strong>Convention — prefer the Extended Cylinder when the shank is not given.</strong> Most
tool sheets (especially at quoting stage) list only the cutting diameter, corner
radius, and stick-out; they do not give a shank diameter or a stepped/necked
profile. In that case use the <strong>Extended Cylinder</strong>: it extends the flute by a
length without inventing a radius the data does not support. A hand-authored
Cylindroid here would bake a <em>guessed</em> shank radius into the model — and an
over-fat guess produces false clearance / collision results, while an over-thin
one understates the body. Reserve the <strong>Cylindroid</strong> (explicit ZR) for tools
whose shank or neck profile is actually known or measured — e.g. stepped,
necked, or back-tapered shanks where a flute-radius extension would be wrong.</p>
<blockquote>
<p>Tip: because the Extended Cylinder's radius tracks the flute, set its length
comfortably past the exposed cutter height so the beam reaches into the holder
with no gap; the overlap is harmless for clearance checks.</p>
</blockquote>
<h3 id="relief-angle-setting">Relief Angle Setting</h3>
<p>The relief angle setting in HiNC refers to the primary relief angle. It is used to calculate flank wear width (Flank Wear, VB).</p>
<h3 id="cutter-body-weight">Cutter Body Weight</h3>
<p>Cutter body weight is used for thermal transfer calculations.</p>
<ul>
<li>Solid tools: Enter the weight of the solid tool as the cutter body weight.</li>
<li>Indexable tools: Enter the total insert weight as the cutter body weight, excluding the weight of the tool body.</li>
</ul>
<h3 id="hone-radius">Hone Radius</h3>
<p>The hone radius represents the sharpness of the tool and is the radius at the cutting edge tip. Typical values range from 20 to 50 um.</p>
<p>Tools used for machining easy-to-cut materials typically have a smaller hone radius (e.g., Al6061-T6, which can be assumed as 20 um); tools used for difficult-to-cut materials typically have a larger hone radius (e.g., stainless steel, which can be assumed as 50 um).</p>
<h3 id="edge-profile-and-edge-grind--bottom-edge-grind">Edge Profile and Edge Grind — Bottom Edge Grind</h3>
<p>The bottom edge grind needs to be configured when the bottom edge is horizontal or concave, and it affects segments with downward cutting.</p>
<p>Drill bits do not require bottom edge grind configuration — only the side edge grind needs to be set. This is because drill bit bottoms are not horizontal or concave. If a custom drill bit has a horizontal or concave bottom, then the bottom edge grind must be configured.</p>
<p>Typically, only bull-nose cutters require bottom edge grind configuration. Note that flat end mills usually do not perform downward cutting and should not, but if the process does so, the bottom edge grind must be configured.</p>

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