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<p>In the process of deep hole boring, boring bar vibration is the most critical factor affecting machining stability and surface quality. In order to solve a series of problems such as chatter, poor surface quality and tool failure caused by boring vibration, based on the dynamic vibration absorption theory, a new vibration damping boring bar integrated with an embedded variable stiffness variable damping vibration absorber was proposed, and The dynamic model of the vibration damping boring bar system is established, and the variable stiffness and variable damping mechanism of the vibration absorber is revealed, and the optimal number of windings turns of the vibration absorber coil is obtained through magnetic circuit analysis. The control performance of the stiffness and damping of the proposed vibration absorber is verified through the variable stiffness and variable damping experiment of the vibration absorber. Finally, the vibration absorber is installed in the boring bar for boring experiments and comparative experiments. The experimental results show that the proposed vibration damping boring bar can effectively reduce vibration and improve the surface quality of the workpiece, verifying the feasibility and effectiveness of the proposed vibration damping boring bar, and providing a new technical idea for boring vibration control.</p>

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Research on control of vibration damping boring bar with adjustable stiffness and damping

  • 期刊论文

  • 发表日期：

    2026年4月9日

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  • Qiang Zhou,
  • Qiang Liu,
  • Wei Han,
  • Jianran Li,
  • Zemin Zhao

摘要

In the process of deep hole boring, boring bar vibration is the most critical factor affecting machining stability and surface quality. In order to solve a series of problems such as chatter, poor surface quality and tool failure caused by boring vibration, based on the dynamic vibration absorption theory, a new vibration damping boring bar integrated with an embedded variable stiffness variable damping vibration absorber was proposed, and The dynamic model of the vibration damping boring bar system is established, and the variable stiffness and variable damping mechanism of the vibration absorber is revealed, and the optimal number of windings turns of the vibration absorber coil is obtained through magnetic circuit analysis. The control performance of the stiffness and damping of the proposed vibration absorber is verified through the variable stiffness and variable damping experiment of the vibration absorber. Finally, the vibration absorber is installed in the boring bar for boring experiments and comparative experiments. The experimental results show that the proposed vibration damping boring bar can effectively reduce vibration and improve the surface quality of the workpiece, verifying the feasibility and effectiveness of the proposed vibration damping boring bar, and providing a new technical idea for boring vibration control.