精密工学会 = The Japan Society for Precision Engineering
抄録
Using an injection mold produced by a metal laser sintering combined with high–speed milling, cooling channels are arranged at effective positions. It promotes the cooling speed and improves the shape accuracy. In this research, spirallyformed cooling channel was located between the ribs where heat accumulates and causes the temperature difference in the work piece. The effect of the reduction of the warp has been confirmed compared with a steel mold with conventionalcooling channels. Analyzed temperature in the resin and the displacement of the warp agreed well with the experimental result.
金属粉末のレーザ焼結による積層造形とミーリングを複合した金属光造形複合加工を用いて射出成形金型を製作すれば,冷却管を任意の場所に配置でき,樹脂の冷却促進とそりの低減につなげられる.本研究では,熱のこもりやすいリブ形状成形品のリブ間に冷却管を配置し,その効果を実験により調べた.その結果従来の金型に比べそりを低減できることを確認した.さらに射出成形シミュレーションを用いて樹脂温度とそりを解析し,金型設計に対して有効であることをみいだした.
金属光造形金型による射出成形の成形精度向上
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TE-PR-YONEYAMA-T-585.pdf
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