Jinyou Kang , Jinsheng Zhang , Heng Zhang , Xingdong Yuan , Changyu Lv , Tianyu Bai
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引用次数: 0
Abstract
Circular saw blades with large diameter-to-thickness ratios are essential tools in the transportation, construction, and aerospace industries thanks to their high efficiency and deep-cutting capabilities. However, the sawing process is hindered by instability, noise, and the intricate design of circular saw blades, posing challenges to productivity and workplace conditions. To address these issues, a novel circular saw blade tool with high machinability is developed to enhance machining stability and eliminate harsh noise. Firstly, an in-depth analysis of the dynamic behavior of the high-speed sawing process is undertaken to determine the excitation source accurately. The transverse vibration differential equation of the circular saw blade is established to obtain its mode shapes and critical rotational speed. The dominant vibration shape during sawing is calculated and paths for blocking vibration transmission are determined. Then, a topology-optimized mathematical method is used to minimize the flexibility of the circular saw blade, and the shape of the built-in cavity is determined based on the dominant vibration shape. Subsequently, a novel 14-step manufacturing process card is proposed to achieve tool manufacturing. Finally, the experimental results show that the vibration and noise levels of the novel circular saw blade are reduced by 30% and 12 dB(A), respectively, compared to conventional ones. Additionally, the surface quality is improved, while sawing forces are reduced in most frequency bands. This research contributes to tool design and process card optimization, filling a research gap in the field of high-performance circular saw blade tool manufacturing.
期刊介绍：
The International Journal of Mechanical Sciences (IJMS) serves as a global platform for the publication and dissemination of original research that contributes to a deeper scientific understanding of the fundamental disciplines within mechanical, civil, and material engineering.
The primary focus of IJMS is to showcase innovative and ground-breaking work that utilizes analytical and computational modeling techniques, such as Finite Element Method (FEM), Boundary Element Method (BEM), and mesh-free methods, among others. These modeling methods are applied to diverse fields including rigid-body mechanics (e.g., dynamics, vibration, stability), structural mechanics, metal forming, advanced materials (e.g., metals, composites, cellular, smart) behavior and applications, impact mechanics, strain localization, and other nonlinear effects (e.g., large deflections, plasticity, fracture).
Additionally, IJMS covers the realms of fluid mechanics (both external and internal flows), tribology, thermodynamics, and materials processing. These subjects collectively form the core of the journal's content.
In summary, IJMS provides a prestigious platform for researchers to present their original contributions, shedding light on analytical and computational modeling methods in various areas of mechanical engineering, as well as exploring the behavior and application of advanced materials, fluid mechanics, thermodynamics, and materials processing.
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