This three-axis tourbillon movement is a 3D printed marvel
The three-axis tourbillon is one of the most complex watch complications in the world. Originally based on a design by watchmaker Abraham-Louis Breguet, this type of tourbillon – literally “whirlwind” – rotates the balance wheel of a watch in order to ensure that gravity doesn’t adversely affect any part of the watch. It’s a clever, complex, and essentially useless complication in an era of atomic clocks and nano materials but darn if it isn’t cool-looking.
Based on this original, simpler model, this new three-axis tourbillon is available for download here. It consists of 70 potentially fiddly parts and runs using a basic motor.
As you can see, the main component is the balance wheel which flips back and forth to drive the watch. The balance wheel is contained inside a sort of spike-shaped cage that rotates on multiple axes. The balance wheel controls the speed of the spin and often these devices are used as second hands on more complex – and more expensive – tourbillon watches. Tourbillons were originally intended to increase watch accuracy when they were riding in a vest pocket, the thinking being that gravity would pull down a watch’s balance wheel differently when it was vertical as compared to being horizontal. In this case, the wheel takes into account all possible positions leading to a delightful bit of horological overkill.
Source: https://techcrunch.com/2018/05/11/this-three-axis-tourbillon-movement-is-a-3d-printed-marvel/
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