UR-CC1 King Cobra
On the UR-CC1, there are two horizontal indications displayed by two retrograde cylinders: one for the (jumping) hours, the other for the minutes. And don't be lulled by the apparent simplicity of the displays; the UR-CC1 is the result of more than three years of research, development, production and testing to ensure that the rotation and instant fly-back of the large hour and minute cylinders was achieved without compromising accurate timekeeping.
A vertical triple-cam operating a rack (visible through a window in the side of the case) rotates the minute cylinder. From zero to 60 minutes, the minute cylinder rotates through 300°. On arriving at the 60-minute mark the cylinder instantly (1/10th of a second) reverses back to its original position thanks to an extra-flat linear spring. The retrograde movement of the minute cylinder triggers the hour cylinder to advance (jump) one complete hour. The triple-cam is crafted from bronze beryllium, a metal selected for its inherently self-lubricating properties and low co-efficient of friction, and takes the form of three small inclines.
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73,5 KBThe precise shape of the curve of the incline is relayed to the pivoting rack, while the teeth on the end of the rack mesh with and rotate the minute cylinder. The triple-cam makes a complete rotation in three hours so that each of the three inclines takes 60 minutes, and 180 points of reference have been calculated on each of the three cams to ensure the precise and isochronic rotation of the minute cylinder.
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146,36 KBThe toothed segment at the end of the rack transmits and transforms the rotation triple-cam into the rotation of the minute cylinder. The toothed rack presents two properties that at first appear contradictory: absolute rigidity, so as to accurately transmit the motion of the cam to the minute cylinder; and extremely low mass to consume as little energy as possible and minimise the effects of gravity and accelerations/shocks. This vital component has been fabricated in silicon by Mimotec using their photolithography process
Immagine:
110,5 KBThe honeycomb pattern of the silicon structure resolves the two apparently contradictory requirements of maximum strength and minimum weight. The dial of the UR-CC1 is animated by a rotating disk displaying the seconds both digitally and linearly – a world first! This incredible exploit was achieved thanks to Mimotec’s photolithography production technique
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