Sudharsan R’s research while affiliated with Saranathan College of Engineering and other places

... This decision was made with the understanding that the cutting system would be scalable and could be adapted for other applications requiring cartesian movement, such as CNC machines or a modular laser cutting system. Lastly, the movement of the Z-axis is driven by a servo motor through a mechanism similar to those used in drawing machines [30], [31]. The 3D model developed in SketchUp, along with its real-world implementation, is shown in Figure 16. ...

Reference:

Proposal of a flying-cutting plant for the development of control systems in academic environmentsPropuesta de planta de corte volador para el desarrollo de sistemas de control en ambientes académicosProposta de planta de corte volante para o desenvolvimento de sistemas de controle em ambientes acadêmicos