Zhuge Repeated Arrowbow

Keyword: Mechanical Design, Fabrication
The Zhuge Crossbow, invented by the military strategist Zhuge Liang during China’s ancient Three Kingdoms period, is a weapon that allows for the continuous firing of arrows without the need for reloading. Drawing inspiration from the crossbow’s mechanism, we separated the fixed hanging groove and track from the single-shot crossbow and designed a movable base plate. When the base plate moves forward, it positions the hanging groove onto the untensioned bowstring. Taking advantage of the downward tension of the bowstring, the hanging groove automatically captures the bowstring.

After hand-drawn sketches and precise dimensional calculations, we completed the three-dimensional modeling of the crossbow’s components, including their shapes and dimensions. We also simulated the movement coordination of the handle, arrow magazine, and other parts. We meticulously designed and verified the specific dimensions, tolerances, and fits of each component, and in the factory, we achieved precise processing and assembly through meticulous carving and craftsmanship.

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