Why are watch hands and scales not perfectly aligned?
Why are watch hands and scales not perfectly aligned?
Why is the pointer of the newly bought watch not completely aligned with the scale? Do you doubt and worry that you have bought a product of poor quality or even a fake watch? what can we do about it?
Many friends have discovered and raised the problem of the error pointed by the watch pointer, and I will explain it to you here. I hope this explanation will give more peace of mind to those who have doubts and entanglements. There are several reasons for the error of watch pointer pointing:
Dial printing error
There are errors in the installation and printing of dial characters and scales. It cannot be absolutely guaranteed that the scales of each part of the dial are concentric and evenly divided; the most important thing is the two disc claws under the dial, one is the positioning tolerance of the disc claws, One is verticality, and the other is that it may have a slight radial movement above the movement.
Visual error
The position of the second hand is the highest from the dial, far away from the dial, so that it is easy to cause visual errors caused by looking at it from different angles.
Working principle
The second hand of a quartz watch basically jumps the second, and the positioning of the second hand seems to be more obvious, especially for a quartz clock with a large dial, where the second hand is often aligned with the scale in one part of the dial, while the other part is not so positive, which is very normal. In fact, when the second hand of a mechanical watch is running, it is also intermittent and paused. It depends on the frequency of oscillation of the balance wheel.
Gear clearance
In order to ensure the normal meshing between the gears and the smooth and smooth transmission, there is a gap between the gears. Clocks and watches basically use the modified cycloid tooth profile. The gear teeth must have an entry angle and an exit angle, and there must be a backlash, otherwise the phenomenon of tooth scraping will occur. The backlash of a pair of gear pairs is very small, but the backlash of several pairs of gears is superimposed, and it becomes obvious.
No real meaning
It seems that there is no specific application in life to require the second hand of a watch to be completely accurate to the scale.In daily life, stopwatches are only used when exercising. Like the use of LCD electronic timers in the Olympic Games, there is no pointer type.Therefore, the installation of the second hand of a general watch does not need to be accurate to every scale.
I want to say Goodbye to you again.This concludes today's sharing.Thank you for your support to Window's Clock & Watch CO.,LTD .!
