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This study examines the influence of tool diameter and downstep (z-direction downstep) on the surface roughness of AA1050 aluminum sheets in Single Point Incremental Forming (SPIF). Tool diameters ranging from 6 to 14 mm and downsteps of 1.5 mm, 1.0 mm, and 0.5 mm were evaluated under controlled conditions. Findings reveal that larger tool diameters reduce surface waviness, while smaller downsteps enhance surface smoothness by ensuring closer tool-to-material conformity. Optimal results were achieved with a 14 mm tool diameter and a 0.5 mm downstep, yielding a surface roughness of Ra = 0.486 µm. These insights provide guidance for improving SPIF surface quality.

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Investigation of the Effects of Downstep and Tool Diameter on Surface Quality in Single Point Incremental Forming of AA1050 Aluminum Sheet

  • 会议论文

  • 发表日期：

    2025年

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  • Trung-Kien Hoang,
  • Duc-Toan Nguyen,
  • The-Thanh Luyen,
  • Phap-Dong Tran

摘要

This study examines the influence of tool diameter and downstep (z-direction downstep) on the surface roughness of AA1050 aluminum sheets in Single Point Incremental Forming (SPIF). Tool diameters ranging from 6 to 14 mm and downsteps of 1.5 mm, 1.0 mm, and 0.5 mm were evaluated under controlled conditions. Findings reveal that larger tool diameters reduce surface waviness, while smaller downsteps enhance surface smoothness by ensuring closer tool-to-material conformity. Optimal results were achieved with a 14 mm tool diameter and a 0.5 mm downstep, yielding a surface roughness of Ra = 0.486 µm. These insights provide guidance for improving SPIF surface quality.