Scholarlink

<p>During rock breaking with a disc tool, oscillation effectively reduces cutting forces and improves efficiency. However, the mechanisms of oscillatory cutting, its main influencing factors, and governing laws remain poorly understood. To explore these aspects, a full-scale experimental platform for disc tool oscillatory cutting was built, and relevant rock-cutting tests were conducted. Additionally, a new method was introduced by applying discrete element-multibody dynamics (DEM-MBD) coupling technology to the field of disc tool rock breaking to study the oscillatory cutting process. Using this approach, the interaction between the disc tool and the rock was analyzed through cutting force, specific energy (<i>SE</i>), and wear as evaluation metrics to systematically examine how vibration frequency, cutting angle, and cutting depth influence cutting performance. The results show that the oscillatory cutting mode promotes crack expansion within the rock and significantly enhances the rock-breaking efficiency of the disc tool. Specifically, both cutting force and <i>SE</i> decrease as frequency increases. Compared to the traditional undercutting model, at 60&#xa0;Hz, the peak and average cutting forces are reduced by 48.6% and 70.9%, respectively. Additionally, disc tool wear decreases with higher frequency, while cutting angle and cutting depth have relatively minor effects on maximum wear depth. Under oscillatory cutting, the maximum wear depth is only 5.3% of that in the undercutting model. By thoroughly analyzing these indicators, the optimal parameter combination for disc tool oscillatory cutting was identified.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Rock Fragmentation by the Disc Tool Under Oscillatory Cutting

  • 期刊论文

  • 发表日期：

    2026年4月28日

查看全文
  • Huarui Yang,
  • Hongxiang Jiang,
  • Xuchang Lu

摘要

During rock breaking with a disc tool, oscillation effectively reduces cutting forces and improves efficiency. However, the mechanisms of oscillatory cutting, its main influencing factors, and governing laws remain poorly understood. To explore these aspects, a full-scale experimental platform for disc tool oscillatory cutting was built, and relevant rock-cutting tests were conducted. Additionally, a new method was introduced by applying discrete element-multibody dynamics (DEM-MBD) coupling technology to the field of disc tool rock breaking to study the oscillatory cutting process. Using this approach, the interaction between the disc tool and the rock was analyzed through cutting force, specific energy (SE), and wear as evaluation metrics to systematically examine how vibration frequency, cutting angle, and cutting depth influence cutting performance. The results show that the oscillatory cutting mode promotes crack expansion within the rock and significantly enhances the rock-breaking efficiency of the disc tool. Specifically, both cutting force and SE decrease as frequency increases. Compared to the traditional undercutting model, at 60 Hz, the peak and average cutting forces are reduced by 48.6% and 70.9%, respectively. Additionally, disc tool wear decreases with higher frequency, while cutting angle and cutting depth have relatively minor effects on maximum wear depth. Under oscillatory cutting, the maximum wear depth is only 5.3% of that in the undercutting model. By thoroughly analyzing these indicators, the optimal parameter combination for disc tool oscillatory cutting was identified.