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<p>This study investigated a robotic polishing process for SKD61 hot die steel under fully immersed wet machining conditions. Four polishing tools—plastic ring, sand cloth sleeve, sandpaper, and wool felt with diamond paste—were used to examine the effect of tool material on surface quality. During polishing, both the tool and workpiece were completely submerged in cutting fluid to minimize dry machining effects and ensure consistent lubrication and cooling. A robotic arm equipped with force feedback control was employed to maintain stable contact pressure throughout the operation. After polishing, the surface morphology was quantitatively evaluated using white-light interferometry to compare the advantages and limitations of each polishing material. The Taguchi method was applied to identify optimal process parameters for achieving fine surface finishes. The results provide practical guidance for tool selection and parameter optimization in precision die polishing and highlight the industrial potential of immersed robotic polishing for automated mold finishing.</p>

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Evaluation of immersed robotic polishing strategies for mold and die surface finishing via Taguchi design

  • 期刊论文

  • 发表日期：

    2025年12月5日

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  • Meng-Hsun Tsai,
  • Shi-Chang Tseng,
  • Chung-Fu Huang

摘要

This study investigated a robotic polishing process for SKD61 hot die steel under fully immersed wet machining conditions. Four polishing tools—plastic ring, sand cloth sleeve, sandpaper, and wool felt with diamond paste—were used to examine the effect of tool material on surface quality. During polishing, both the tool and workpiece were completely submerged in cutting fluid to minimize dry machining effects and ensure consistent lubrication and cooling. A robotic arm equipped with force feedback control was employed to maintain stable contact pressure throughout the operation. After polishing, the surface morphology was quantitatively evaluated using white-light interferometry to compare the advantages and limitations of each polishing material. The Taguchi method was applied to identify optimal process parameters for achieving fine surface finishes. The results provide practical guidance for tool selection and parameter optimization in precision die polishing and highlight the industrial potential of immersed robotic polishing for automated mold finishing.