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<p>This study investigates the impact of cutting parameters and pre-compressive stress on the machining behavior of 7075 aluminum alloy. Using ABAQUS finite element software, a three-dimensional model of the alloy was developed to examine the effects of cutting depth, speed, and both transverse and longitudinal extrusion speeds on cutting force, surface roughness, and residual compressive stress at the tool-workpiece interface through single-factor experiments. The findings indicate that cutting force follows a distinct pattern with changes in cutting and longitudinal extrusion speeds. Specifically, at cutting speeds of 1186&#xa0;mm/s and 2338&#xa0;mm/s, increasing the longitudinal extrusion speed from 10 to 30&#xa0;mm/s results in an increase in cutting force by 4.91 N and 5.86 N, reflecting rises of 6.92 and 7.17%, respectively. Surface roughness is predominantly influenced by cutting depth and transverse extrusion speed. As cutting depth increases from 0.95 to 2.3&#xa0;mm, roughness rises by 114.75, 185.37, and 736.36% at transverse extrusion speeds of 10, 20, and 30&#xa0;mm/s, respectively. Furthermore, residual compressive stress at the contact interface shows a marked increase with higher cutting and longitudinal extrusion speeds. When cutting speed rises from 1186 to 2338&#xa0;mm/s and longitudinal extrusion speed increases from 10 to 30&#xa0;mm/s, residual compressive stress experiences increases of 161.4, 202.27, and 686.49%, respectively.</p>

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Study on the Influence of Pre-deformation on the Cutting Mechanism of 7075 Aluminum Alloy

  • 期刊论文

  • 发表日期：

    2025年6月12日

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  • Ping Zhang,
  • Songting Zhang,
  • Shuai Ge,
  • Xiaomin Jiang,
  • Xuezhao Wang

摘要

This study investigates the impact of cutting parameters and pre-compressive stress on the machining behavior of 7075 aluminum alloy. Using ABAQUS finite element software, a three-dimensional model of the alloy was developed to examine the effects of cutting depth, speed, and both transverse and longitudinal extrusion speeds on cutting force, surface roughness, and residual compressive stress at the tool-workpiece interface through single-factor experiments. The findings indicate that cutting force follows a distinct pattern with changes in cutting and longitudinal extrusion speeds. Specifically, at cutting speeds of 1186 mm/s and 2338 mm/s, increasing the longitudinal extrusion speed from 10 to 30 mm/s results in an increase in cutting force by 4.91 N and 5.86 N, reflecting rises of 6.92 and 7.17%, respectively. Surface roughness is predominantly influenced by cutting depth and transverse extrusion speed. As cutting depth increases from 0.95 to 2.3 mm, roughness rises by 114.75, 185.37, and 736.36% at transverse extrusion speeds of 10, 20, and 30 mm/s, respectively. Furthermore, residual compressive stress at the contact interface shows a marked increase with higher cutting and longitudinal extrusion speeds. When cutting speed rises from 1186 to 2338 mm/s and longitudinal extrusion speed increases from 10 to 30 mm/s, residual compressive stress experiences increases of 161.4, 202.27, and 686.49%, respectively.