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<h1 id="nc優化">NC優化</h1>
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<p>組態在NC仿真前設定，然後執行<strong>輸出優化NC檔</strong>指令。</p>
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<h2 id="組態">組態</h2>
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<div class="NOTE">
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<h5>Note</h5>
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<p><strong>指令格式</strong></p>
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<pre><code class="lang-csharp">OptEnableFeedrate = <布林值>;
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OptEnableInterpolation = <布林值>;
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OptRapidFeed_mmdmin = <實數>;
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OptMinFeedrate_mmdmin = <實數>;
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OptMaxFeedrate_mmdmin = <實數>;
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OptMaxAcceleration_mmds2 = <實數>;
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OptExtendedPreDistance_mm = <實數>;
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OptExtendedPostDistance_mm = <實數>;
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OptSpindlePowerSafetyFactor = <實數>;
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</code></pre>
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</div>
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<ul>
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<li><p><code>OptEnableFeedrate</code>：啟用順序式(Sequential)進給率優化。</p>
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<p>順序式係指該功能從下指令開始作用。與其相對的設定在刀具端，刀具端也能設定進給率優化，但是在裝刀時才會發揮作用。</p>
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<p><code>OptEnableFeedrate</code>與所有其他啟用進給率優化的指令需同時為真，進給率優化才會啟用。
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即與刀具設定端必須同時為真(true)，進給率優化才會啟用。</p>
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<p><code>OptEnableFeedrate</code>預設值為真。</p>
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</li>
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<li><p><code>OptEnableInterpolation</code>：優化程序用重新插補。</p>
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</li>
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</ul>
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<p>重新插捕後NC碼會增加，可以更好地控制加減速。</p>
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<ul>
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<li><code>OptRapidFeed_mmdmin</code>：優化程序中的無切削區域進給率。單位mm/min。</li>
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</ul>
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<p>沒有切到工件的NC路徑，為無切削區域。優化後該路徑將採用無切削區域進給率。</p>
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<ul>
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<li><code>OptMinFeedrate_mmdmin</code>：優化程序中的有切削區域最小進給。單位mm/min。</li>
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<li><code>OptMaxFeedrate_mmdmin</code>：優化程序中的有切削區域最大進給。單位mm/min。</li>
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</ul>
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<p>有切到工件的NC路徑，為有切削區域。有切削區域的最大最小進給的設定通常依據經驗法則。</p>
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<ul>
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<li><p><code>OptMaxAcceleration_mmds2</code>：優化程序中的加減速限制。優化後NC碼的F值變化在該限制之內。單位$mm/s^2$。</p>
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</li>
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<li><p><code>OptExtendedPreDistance_mm</code>：優化程序中的有切削區域等效計算的前長度。單位mm。</p>
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</li>
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<li><p><code>OptExtendedPostDistance_mm</code>：優化程序中的有切削區域等效計算的後長度。單位mm。</p>
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</li>
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</ul>
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<figure>
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<img src="ExtendedDistance.png" alt="ExtendedDistance">
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<figcaption>優化程序中的有切削區域等效計算的長度</figcaption>
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</figure>
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<ul>
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<li><code>OptSpindlePowerSafetyFactor</code>：主軸功率安全係數。</li>
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<li><code>OptSpindleTorqueSafetyFactor</code>：主軸扭力安全係數。</li>
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</ul>
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<p>優化後的NC碼，主軸功率及主軸扭力將被限制於安全係數之內。</p>
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<ul>
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<li><code>OptPreferedForce_N</code>：優化程中的目標力。單位N。</li>
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</ul>
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<p>在符合所有限制的條件下，優化程序中的加工路徑產生的力會盡可能的趨近目標力。</p>
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<h2 id="nc碼中的優化腳本指令">NC碼中的優化腳本指令</h2>
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<h3 id="於指定nc行不啟用優化">於指定NC行不啟用優化</h3>
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<p>在執行 <code>Preserve()</code> 的NC行中，不啟用優化。</p>
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<div class="TIP">
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<h5>Tip</h5>
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<p><strong>指令範例</strong></p>
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<p>在 <code>N0140</code> 行不啟用優化。</p>
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<pre><code class="lang-nc">...
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N0130 X-1.965 Y17.053
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N0140 G03 X-2.66 Y38.193 I-103.796 J7.172 (;@Preserve();)
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N0150 G01 X-3.068 Y40.776
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...
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</code></pre>
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</div>
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<h3 id="於指定nc範圍不啟用優化">於指定NC範圍不啟用優化</h3>
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<p>使用<code>BeginPreserve()</code>的NC行及<code>EndPreserve()</code>的NC行及包含的NC範圍，不啟用優化。</p>
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<div class="TIP">
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<h5>Tip</h5>
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<p><strong>指令範例</strong></p>
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<p>在 <code>N0140</code>、<code>N0150</code>、<code>N0160</code> 行不啟用優化。</p>
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<pre><code class="lang-nc">...
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N0130 X-1.965 Y17.053
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N0140 G03 X-2.66 Y38.193 I-103.796 J7.172 (;@BeginPreserve();)
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N0150 G01 X-3.068 Y40.776
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N0160 X-3.555 Y43.338 (;@EndPreserve();)
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N0170 X-4.125 Y45.875
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...
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</code></pre>
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</div>
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<h2 id="輸出優化nc檔">輸出優化NC檔</h2>
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<div class="NOTE">
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<h5>Note</h5>
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<p><strong>指令格式</strong></p>
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<pre><code class="lang-csharp">OptimizeToFiles(<路徑樣板>);
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</code></pre>
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</div>
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<p><路徑樣板>支援 <a href="../Doc-Task/index.html#FileTemplate">檔案路徑樣板</a>。</p>
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<div class="TIP">
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<h5>Tip</h5>
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<p><strong>指令範例</strong></p>
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<pre><code class="lang-csharp">OptEnableFeedrate = true;
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OptEnableInterpolation = true;
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OptRapidFeed_mmdmin = 4000;
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OptMinFeedrate_mmdmin = 100;
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OptMaxFeedrate_mmdmin = 4000;
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OptMaxAcceleration_mmds2 = 10;
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OptExtendedPreDistance_mm = 3;
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OptExtendedPostDistance_mm = 2;
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OptSpindlePowerSafetyFactor = 1.5;
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OptSpindleTorqueSafetyFactor = 1.5;
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OptPreferedForce_N = double.PositiveInfinity;
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PlayNcFile("NC/file1.nc");
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OptRapidFeed_mmdmin = 8000;
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PlayNcFile("NC/file2.nc");
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OptimizeToFiles("Cache/Opt-[NcName]");
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</code></pre>
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</div>
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<p>組態設定可以穿插在NC仿真間，將會作用在組態設定後的NC仿真。</p>
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<p>以上範例為例，優化後的NC程式file1.nc的無切削區域快速進給為4000，file2.nc則為8000。</p>
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<div class="TIP">
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<h5>Tip</h5>
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<p><strong>NC碼中的優化指令範例</strong></p>
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<pre><code class="lang-nc">...
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N0110 X-3.064 Y6.378 (;@OptMaxAcceleration_mmds2=10;)
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N0120 X-2.411 Y11.712
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N0130 X-1.965 Y17.053
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N0140 G03 X-2.66 Y38.193 I-103.796 J7.172 (;@Preserve();)
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N0150 G01 X-3.068 Y40.776 (;@OptMaxAcceleration_mmds2=100; OptMaxFeedrate_mmdmin=12000;)
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N0160 X-3.555 Y43.338
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N0170 X-4.125 Y45.875
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...
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</code></pre>
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</div>
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<blockquote>
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<p>N0110至N0150前，優化區加速度設為10 <span class="math">\(mm/s^2\)</span>；
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N0140單行不做優化；
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N0150及以後，優化區加速度設為100 <span class="math">\(mm/s^2\)</span>；
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N0150及以後，優化區切削區域最大進給設為12000 <span class="math">\(mm/min\)</span>；</p>
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</blockquote>
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<div class="TIP">
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<h5>Tip</h5>
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<p><strong>斷刀解決方案</strong></p>
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<p>更改加工路徑降低切寬深 或 以HiNC優化功能調整進給率，將<strong>降伏應力比</strong>、<strong>主軸最大扭矩比</strong>、<strong>主軸最大功率比</strong>降至100%以下。</p>
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</div>
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<div class="TIP">
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<h5>Tip</h5>
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<p><strong>熱崩刃解決方案</strong></p>
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<p>在解決斷刀問題的前提下，降低轉速，讓刀刃有充足時間散熱。</p>
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<p>注意冷卻液是否對準刀刃影響甚大。</p>
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