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<p>Additive Manufacturing (AM) is a disruptive technique that enables solid physical realization of a given 3D model, via <i>layer-by-layer</i> deposition in a rapid manner. Various AM techniques have been developed to suit different material, geometric, and property needs. Motion systems are crucial for any advanced manufacturing technique, as they define the kinematic capabilities of the overall system, such as range of travel, feed speed, acceleration, and working volume. While the majority of the machine tools and AM systems are based on serial kinematic motion systems, parallel machines are also gaining popularity because of their precision and design. The scissor mechanism is a parallel kinematic system that offers a compact design with an extensive motion range and distributed loading. Although they are extensively used in material handling and lifting operations, limited research has been done on the incorporation of scissor-based motion systems for advanced manufacturing. This research presents a novel arrangement of scissor kinematics, retrofitted with a rotary table, to provide an overall tri-axial hybrid motion system, suitable for machine tools or AM applications. The system achieves two Parallel Translations (2PT) along Y and Z directions and a rotation about the Z-axis using a Serial Rotary table (1SR). Analytical design and computational models are prepared to validate the proposed design. A design case study is presented to demonstrate the potential application of the triaxial scissor system in sheet-based <i>Electron Beam Additive Manufacturing</i> (EBAM).</p>

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A novel triaxial scissor mechanism for machine tools and additive manufacturing

  • 期刊论文

  • 发表日期：

    2025年8月25日

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  • Parth Lalpurwala,
  • Yash Mittal,
  • Avinash Kumar Mehta,
  • Gopal Gote,
  • Yogesh Patil,
  • Dixita Yadav,
  • K. P. Karunakaran

摘要

Additive Manufacturing (AM) is a disruptive technique that enables solid physical realization of a given 3D model, via layer-by-layer deposition in a rapid manner. Various AM techniques have been developed to suit different material, geometric, and property needs. Motion systems are crucial for any advanced manufacturing technique, as they define the kinematic capabilities of the overall system, such as range of travel, feed speed, acceleration, and working volume. While the majority of the machine tools and AM systems are based on serial kinematic motion systems, parallel machines are also gaining popularity because of their precision and design. The scissor mechanism is a parallel kinematic system that offers a compact design with an extensive motion range and distributed loading. Although they are extensively used in material handling and lifting operations, limited research has been done on the incorporation of scissor-based motion systems for advanced manufacturing. This research presents a novel arrangement of scissor kinematics, retrofitted with a rotary table, to provide an overall tri-axial hybrid motion system, suitable for machine tools or AM applications. The system achieves two Parallel Translations (2PT) along Y and Z directions and a rotation about the Z-axis using a Serial Rotary table (1SR). Analytical design and computational models are prepared to validate the proposed design. A design case study is presented to demonstrate the potential application of the triaxial scissor system in sheet-based Electron Beam Additive Manufacturing (EBAM).