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<p>Micro-textured cutting tools have been demonstrated to significantly enhance cutting performance by optimizing tool-chip contact conditions. Although there has been extensive research on the advantages of micro-textured tools, studies on the mechanism of serrated chip formation during th0eir processing remain relatively scarce. This paper uses AA7050 as the workpiece and comparatively analyzes the effects of textured and non-textured cutting tools on chip serration characteristics, surface roughness, and the microhardness of the matrix zone and adiabatic shear band (ASB). The results indicate that at a speed of 40&#xa0;m/min and a feed rate of 0.5&#xa0;mm/r, compared to conventional tools (CT), micro-textured tools significantly improve cutting performance and effectively suppress the formation of chip serrations, burrs, and inter-tooth cracks. The comprehensive cutting performance of the dot matrix micro-textured tool (ZT) is optimal, with chip serration reduced by 15.4%, workpiece surface roughness reduced by 57%, and serration spacing decreased by 37.7%. Under the same cutting conditions, the hardness of the ASB region is higher than that of the matrix zone. These research findings provide experimental evidence to facilitate a more profound understanding of how micro-textured cutting tools affect the formation of serrated chips in aluminum alloys.</p>

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Study on Textured Tool Cutting of 7050 Aluminum Alloy and Formation Mechanism of Serrated Chips

  • 期刊论文

  • 发表日期：

    2025年11月10日

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  • Xiaolong Yin,
  • Shaobin Ma,
  • Yawei Wu,
  • Wan Wang,
  • LuJun Cui,
  • Yongqian Chen

摘要

Micro-textured cutting tools have been demonstrated to significantly enhance cutting performance by optimizing tool-chip contact conditions. Although there has been extensive research on the advantages of micro-textured tools, studies on the mechanism of serrated chip formation during th0eir processing remain relatively scarce. This paper uses AA7050 as the workpiece and comparatively analyzes the effects of textured and non-textured cutting tools on chip serration characteristics, surface roughness, and the microhardness of the matrix zone and adiabatic shear band (ASB). The results indicate that at a speed of 40 m/min and a feed rate of 0.5 mm/r, compared to conventional tools (CT), micro-textured tools significantly improve cutting performance and effectively suppress the formation of chip serrations, burrs, and inter-tooth cracks. The comprehensive cutting performance of the dot matrix micro-textured tool (ZT) is optimal, with chip serration reduced by 15.4%, workpiece surface roughness reduced by 57%, and serration spacing decreased by 37.7%. Under the same cutting conditions, the hardness of the ASB region is higher than that of the matrix zone. These research findings provide experimental evidence to facilitate a more profound understanding of how micro-textured cutting tools affect the formation of serrated chips in aluminum alloys.