Why do Custom Mechanical Watches often have errors when they go? Mechanical Wrist Watch Supplier tell you that the mechanical watch uses the mechanical oscillator composed of the balance spring as the time base. The accuracy of the watch will mainly depend on the stability of the balance period of the balance spring. However, the oscillation stability of the balance spring is affected by the following factors:
(1) Influence of swing
The tightness of the spring directly affects the amplitude of the balance and therefore the isochronous performance of the watch. The so-called "isochronism" refers to a phenomenon in which the amplitude of the swinging object does not affect the vibration period, but the balance spring system in the watch is not free to oscillate. It frequently collides and collides with the escapement components, and is a combined force state of "forced + free", so it is inevitably affected by the escapement. The magnitude of the thrust moment determines the size of the swing and also determines the time at which they will be related. This time is of course as short as possible.
(2) Influence of position change
The main positional change is the change of plane and vertical plane. There are 2 planes (surface up and surface down). The plane only counts 3 (they are: the crown is down, the crown is left, the crown is up) It does not happen to the right when it is worn normally, so it counts a total of five positions. The change of position firstly causes the change of the friction surface of the balance shaft, the friction surface increases, and then the imbalance of the balance wheel is more obvious and prominent under the action of gravity, and an additional torque acts on the swinging swing. On the wheel, as well as the gravity of the hairspring, the balance of the watch balance spring system is affected by the size of the oscillation cycle at each position.
(3) The effect of the hairspring clip
Most of the watches have quick and slow clips. The fast and slow clips are used to facilitate the correction of travel time accuracy. However, because there is a gap between the fast and slow clips and the balance spring, it is also called "dangling gap". Its existence greatly destroys the watch. The isochronism also increases the positional error of the watch.
(4) The effect of temperature changes
Changes in temperature will also change the geometry of the balance wheel and the balance spring. Each tiny change in these critical components will directly affect the oscillation period, and the temperature will also change the viscosity of the oil, thus making the watch wheel The torque transmission and oscillation of the system change.
