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<p>Pyramid-structured abrasive belts are characterized by their regular microgeometry and self-sharpening, layer-by-layer wear. The coupling of this wear evolution with material removal behavior may significantly influence the surface residual stress during grinding. In this study, pyramid belts at various wear stages were utilized to perform constant-load and constant-speed plane grinding of Mn13 high-manganese steel plates on a force-controlled robotic platform. Surface residual stress distributions in different directions were measured using X-ray diffraction, and their consistency was evaluated through repeated trials and statistical indices. The results indicate that the ground surfaces predominantly exhibit tensile stress, whereas compressive stress or a transition toward compression tends to occur at the entry and exit regions of the grinding path. In the transverse direction, <i>σ</i><sub><i>x</i></sub> displays a symmetric distribution that diminishes in the final wear stage, while <i>σ</i><sub><i>y</i></sub> evolves from initial compression to tensile stress with increasing magnitude. As belt wear progresses, the removal mode transitions from cutting to plowing and friction, resulting in <i>σ</i><sub><i>x</i></sub> gradually shifting toward compression and <i>σ</i><sub><i>y</i></sub> toward tensile. Consistency analysis reveals that the Relative Uniformity Index (RUI) remains stable across wear stages, with lower values observed in the transverse direction compared to those along the grinding path. This stability is closely related to the layer-by-layer wear and self-sharpening characteristics of the pyramid belts. Together, these results provide a systematic link between pyramid-belt wear evolution, material removal mode and three-dimensional residual stress distribution, offering a basis for controlling surface integrity in robotic belt finishing.</p>

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Influence of wear evolution in pyramid-structured abrasive belts on surface residual stress

  • 期刊论文

  • 发表日期：

    2026年5月9日

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  • Lei Wan,
  • Kangkang Song,
  • Wenxi Wang,
  • Lai Zou

摘要

Pyramid-structured abrasive belts are characterized by their regular microgeometry and self-sharpening, layer-by-layer wear. The coupling of this wear evolution with material removal behavior may significantly influence the surface residual stress during grinding. In this study, pyramid belts at various wear stages were utilized to perform constant-load and constant-speed plane grinding of Mn13 high-manganese steel plates on a force-controlled robotic platform. Surface residual stress distributions in different directions were measured using X-ray diffraction, and their consistency was evaluated through repeated trials and statistical indices. The results indicate that the ground surfaces predominantly exhibit tensile stress, whereas compressive stress or a transition toward compression tends to occur at the entry and exit regions of the grinding path. In the transverse direction, σx displays a symmetric distribution that diminishes in the final wear stage, while σy evolves from initial compression to tensile stress with increasing magnitude. As belt wear progresses, the removal mode transitions from cutting to plowing and friction, resulting in σx gradually shifting toward compression and σy toward tensile. Consistency analysis reveals that the Relative Uniformity Index (RUI) remains stable across wear stages, with lower values observed in the transverse direction compared to those along the grinding path. This stability is closely related to the layer-by-layer wear and self-sharpening characteristics of the pyramid belts. Together, these results provide a systematic link between pyramid-belt wear evolution, material removal mode and three-dimensional residual stress distribution, offering a basis for controlling surface integrity in robotic belt finishing.