The creation of the automated chessboard's XY table marks the first step in a journey of intricate engineering and design. This component is pivotal, acting as the foundation upon which the chess pieces dance their strategic ballet.
The XY table comprises two motorized linear slides, each dedicated to one axis of movement – the X and the Y. Drawing inspiration from the 3D printing world, these slides utilize the V-slot concept. This involves using standard aluminum profiles with V-shaped machining in the central grooves. These grooves serve a dual purpose: they provide a rigid support structure for the frame and act as linear rails guiding the movement of wheels seated in them.
For the X axis, the guiding system involves four wheels, two positioned at each end of the lateral beams. In a similar fashion, the Y axis is guided by another set of four wheels, arranged on either side of the trolley beam. The precise alignment and tension of these wheels against the beams are crucial for smooth movement. This fine-tuning is achieved through the use of eccentric spacers, which allow for the adjustment of the gap between the wheels and the beams, ensuring optimal sliding and accurate guiding.
The trolley's motion is powered by the Core XY system, a design choice that favors a compact horizontal beam to maximize the working area. This system employs two motors and belts in a configuration that avoids placing a motor directly on the trolley beam, as seen in traditional cartesian kinematics. While this arrangement requires more careful attention during assembly, particularly in aligning belts and pulleys, it offers a more spacious and efficient design.
The operational logic of the XY table is straightforward yet ingenious. Diagonal movements are achieved by turning just one motor, while horizontal and vertical movements result from the coordinated operation of both motors, either in the same or opposite directions. This mechanism allows for precise and varied movements of the electromagnetic trolley, which in turn guides the chess pieces across the board in a seemingly magical display of automation.
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