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<p dir="auto"><img src="https://mj7.cn/uploads/default/mold_structure_08.png" alt="注塑模具镶件设计：组合型芯拆分原则与定位方案" class=" img-responsive img-markdown" /></p>
<p dir="auto">镶件（Insert）在注塑模具中广泛用于复杂型芯拆分、局部易损部位替换和特殊结构成形。</p>
<h2>镶件拆分六大原则</h2>
<p dir="auto"><strong>1. 加工便利原则</strong></p>
<ul>
<li>将难加工的内腔变为外加工</li>
<li>将深孔加工变为通孔加工</li>
<li>优先拆分需要电火花加工的区域</li>
</ul>
<p dir="auto"><strong>2. 排气需要原则</strong></p>
<ul>
<li>镶件分型面利用自然排气</li>
<li>镶件间隙0.005~0.01mm</li>
</ul>
<p dir="auto"><strong>3. 强度考虑</strong></p>
<ul>
<li>镶件壁厚不小于3mm</li>
<li>细长镶件（L/D &gt; 5）需增加定位台阶</li>
</ul>
<p dir="auto"><strong>4. 热平衡原则</strong></p>
<ul>
<li>镶件材质导热系数不低于模具钢</li>
</ul>
<p dir="auto"><strong>5. 维修替换</strong></p>
<ul>
<li>易损部位做独立镶件</li>
<li>镶件尺寸标准化</li>
</ul>
<p dir="auto"><strong>6. 定位可靠</strong></p>
<ul>
<li>台阶定位：台阶深度3~5mm</li>
<li>销钉定位：Φ4~Φ8定位销</li>
<li>防转设计：D型或月牙形</li>
</ul>
<h2>常见定位方案</h2>
<table class="table table-bordered table-striped">
<thead>
<tr>
<th>结构</th>
<th>精度</th>
<th>适用场景</th>
</tr>
</thead>
<tbody>
<tr>
<td>D型定位</td>
<td>±0.01</td>
<td>圆形镶件</td>
</tr>
<tr>
<td>月牙键</td>
<td>±0.005</td>
<td>精密镶件</td>
</tr>
<tr>
<td>销钉</td>
<td>±0.01</td>
<td>异形镶件</td>
</tr>
<tr>
<td>台阶+销钉</td>
<td>±0.005</td>
<td>大型镶件</td>
</tr>
</tbody>
</table>
<hr />
<blockquote>
<p dir="auto">本文由模极社(<a href="http://mj7.cn" rel="nofollow ugc">mj7.cn</a>)内容团队原创整理，欢迎收藏转发。</p>
</blockquote>
<hr />
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<hr />
<p dir="auto"><img src="https://forum.mj7.cn/assets/plugins/nodebb-plugin-emoji/emoji/android/1f4cc.png?v=r7ujabd6dv0" class="not-responsive emoji emoji-android emoji--pushpin" title=":pushpin:" alt="📌" /> <strong>相关内容推荐</strong>：</p>
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<hr />
<p dir="auto">新手建议收藏，老手欢迎指点。</p>
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