Why is the error of the mechanical watch so big! However, the most expensive watches are mechanical

Although the quartz watch is accurate, its movement drive is quartz + integrated circuit board, which is easy to age and be scrapped. In other words, it has a shorter period of use. The movement of a high-end mechanical watch is a steel part integrated with a fine workmanship, which can be disassembled, washed and repaired, and the timing is also very accurate, and it can be used carefully and can be passed down.

Therefore, when spending money (more than 5000) to buy a watch, most people (not only the rich, but also the rich) are considering buying a mechanical watch. As for the top-of-the-line watches of hundreds of thousands, they are luxury goods that the rich play with. See also:

There are several reasons for the large error in the timing of mechanical watches

"Three defenses" is the main reason. The so-called "three proofs" refer to waterproof, anti-magnetic, and shockproof, because the movement as a precision machine is also very picky about the operating environment, and any problem in any of the "three proofs" will cause inaccurate or even more serious problems in the movement. Among them, the interference of the hairspring is often an important factor causing inaccuracy.

Insufficient winding. Friends who wear automatic movement watches, they think that as long as they wear them every day, the watch will be automatically wound, but they don't know that if their exercise is not big enough, such as taking the car when they go out, the elevator when they go to work, and the sitting when they go home, etc., in fact, they don't exercise much for a day, such a state of life may be commonplace for many people, but it is also an important reason why the automatic watch is not accurate because of the insufficient winding.

Problems with the movement. If the watch has neither been violently collided nor magnetized, one of the most likely reasons for the movement is that the position error of the watch is relatively large, such as the difference in precision between the surface and the face of the hand, which needs to be determined by professional instruments; Another important reason is that the secondary outer ring of the hairspring rubs against the outer pile of the hairspring, and the situation that the time is most inaccurate after the hairspring is deformed, in this case, it is necessary to debug the gap between the secondary outer ring of the hairspring and the outer pile of the hairspring, so that there should be a reasonable and safe distance between them. Of course, these things have to be left to professional institutions.

Neglect of maintenance. The watch is a precision instrument, the internal mechanical structure is very meticulous and fine, and we as a wearer, because of personal habits, because of negligence, it will not always meet all the wearing requirements, and even if it has been in full compliance with the wearing requirements, the watch will also cause some problems due to long-term operation, such as whether the screws are loose, whether the oil is not enough, etc., so mechanical watches are sometimes like cars, need regular maintenance, find problems in time, solve problems.

Watches, especially mechanical watches, are very delicate mechanical organizations after all, and although there are relatively many reasons for the large time error, the fundamental reason is that the accuracy of the mechanical structure is not as accurate as the accuracy of the electronic structure. This also gives it a reason to be "squeamish", so no matter what problems arise, including how fast or slow you go, don't open the back cover yourself to deal with it yourself, so it is easy to cause more damage to the watch, and it is the right choice to hand it over to professional institutions such as brand after-sales service.

A mechanical watch error of 30 seconds is considered normal. Generally speaking, as long as the mechanical watch is in the case of full winding, the time is not more than 30 seconds slower and no more than 30 seconds fast every day. The instantaneous error range of the calendar mechanical watch type I (men's watch) is:

Superior error per 24 hours -30 +45 seconds; First-class error -40 +75 seconds per 24 hours; The error of the qualified product is -60 +105 seconds per 24 hours. The average duration of the continuation is greater than or equal to 36 hours.

The instantaneous error range of the calendar mechanical watch type II (medium-sized watch) is: -35 +65 seconds per 24 hours for the superior product; First-class error per 24 hours -50 +95 seconds; The instantaneous error range of the qualified product is -70 +135 seconds per 24 hours. The average duration of the continuation is greater than or equal to 35 hours.

Precautions for purchasing a mechanical watch.

When buying a mechanical watch, pay attention to check whether it can swing automatically. The method is to gently hold the watch that relaxes the mainspring and slowly winds it up, while looking at the second hand, which should rotate at the beginning of the winding, otherwise it is not standard.

Check the sound of the table in various positions. After a few springs, turn the surface upwards, downwards, left, and right. Listen to the frequencies and beats in all directions, and after winding up, the sound is crisp and noise-free.

About 30 seconds.

Errors in mechanical watches are unavoidable, but there is a standard range for error, and generally speaking, the error standards vary from movement to movement. The standard range of error for Swiss mechanical watches is +-30 seconds per day for men's watches and +-40 seconds for women's watches. In the case of a chronometer-certified movement, the error criterion is between -4 and 6 seconds.

Precautions for mechanical watch maintenance.

If you want to readjust the time, you must pay special attention to the operation mode, so as not to cause gear jamming failure, internal parts can not operate normally, if you can maintain normally, the watch needs to spend a lot of money to repair the situation can be reduced to a minimum.

After a long period of rest, the mainspring of a mechanical watch naturally relaxes to the point where the watch is stationary, and in order to re-wear, it is necessary to re-wind the mainspring and then calibrate the time. Generally, when the mainspring is the loosest, the hour and minute hands will slow down or become faster, so the mainspring should be tightened first, so as not to have a standard power-driven hand after calibrating the time.

The allowable error range of the mechanical watch is 30 seconds, the power of the fully automatic mechanical watch ** in the swing of the wearer's wrist to generate energy to wind the winding, a fully wound Camai mechanical watch can last more than 40 hours, must ensure that the normal wear is not less than 8 hours a day, when the wearer usually does not have much activity or insufficient wearing time, the power will be insufficient, resulting in the watch is not accurate or stopped, all automatic watches including the Cami mechanical watch will stop if not worn, and the full spring should be worn again after stopping.

Generally speaking, mechanical watches (including automatic watches) basically meet the standards as long as they are slow by no more than 30 seconds per day and no faster than 30 seconds when the clock is full.

For the time error of clocks and watches, the current national standard and watch industry standards (GB T6044-92, QB T1903-93) stipulate:

The instantaneous error range of the calendar mechanical watch type I (men's watch) is:

Superior error per 24 hours -30 +45 seconds;

First-class error -40 +75 seconds per 24 hours; The error of the qualified product is -60 +105 seconds per 24 hours.

The average duration of the continuation is greater than or equal to 36 hours.

The range of instantaneous error of the calendar mechanical watch type II (medium) is:

Error of excellent products per 24 hours 35-65 seconds; First-class error per 24 hours -50 +95 seconds;

The instantaneous error range of the qualified product is -70 +135 seconds per 24 hours.

The average duration of the continuation is greater than or equal to 35 hours.

The permissible error range of a mechanical watch is 30 seconds, and the average error range of a chronometer-certified movement is between -4 seconds and +6 seconds, the specific error depends on the movement used in the watch, not according to the principle of **the higher the error, the smaller the error, the power of the automatic watch**The swing of the wearer's wrist generates energy to wind the wind, a fully wound automatic watch can last for about 36 hours: if it is guaranteed to be worn normally every day, it can operate for about 15 hours, If you do not wear it for more than the above time or do not swing enough (the wearer does not exercise much), it will cause the watch to stop, and it is recommended that you should fully wind the watch before wearing it again.

The permissible margin of error for mechanical watches is 30 seconds, while the average error range for chronometer-certified Chasson movements is between -4 seconds and +6 seconds, depending on the movement used in the watch, not the higher the error, the smaller the error. The power of the automatic watch**The swing of the wearer's wrist generates energy to wind the wind, a fully wound automatic watch can last for about 36 hours: if it is guaranteed to be worn normally every day, it can operate for about 15 hours, if it is not worn for more than the above time or the swing is insufficient (the wearer's exercise is less) will cause the watch to stop, and the watch should be fully wound before wearing it again.

View larger image. The case of the time error.

The accuracy of a watch varies depending on the type of movement of the watch. Stone or filial piety watches use quartz oscillators instead of the balance wheel in mechanical watches, using its correct high-speed oscillations to keep time, generally speaking.

The accuracy of quartz watches is high, and the Swiss standard is a monthly error in.

In seconds, some precision movements can reach an annual error of a few seconds.

Mechanical watches rely on internal mechanical devices to control the uniform and accurate timing of the watch, these mechanical devices will be affected by gravity, ambient temperature and other errors caused by errors, the error of general mechanical watches is calculated by days, according to the model of the movement and the quality of the manufacture is different, generally every day error.

Anything within a second is within the normal range. Some movements with higher precision, such as the Chronometer series, can achieve this.

seconds or so.

Professional mechanical watches have errors every day, which is normal, because there is no such thing as a mechanical watch that never beats every second. After all, mechanical watches are composed of mechanical parts, these parts rub against each other every day, collide, balance drive, plus the influence of temperature and magnetic field, a total of 86,400 seconds a day 24 hours a day, there is an error of more than ten seconds, it is really a normal thing.

However, since there is the concept of "inaccurate time", there must be an error standard for judging whether the time is normal or not. This standard is somewhat different in each country and region, generally speaking, as long as the mechanical watch is in the case of full winding, the time does not exceed 30 seconds per day, and the speed does not exceed 30 seconds, it basically meets the standard.

This standard is quite surprising at first glance, why is it so loose, it turns out that the mechanical watch is so inaccurate? But in fact, the daily difference of more than ten seconds is more than enough for ordinary watch owners, and there is only about one minute of error in a week. In addition, many people only wear it during commuting time, and when they get up early on Monday, they still have to adjust the time on their mobile phones as usual, and the error of this minute will be adjusted back.

If you want absolute accuracy, then buy a radio-controlled watch, real-time reception of signal time, 300,000 years will not have more than 1 second error, but compared to mechanical watches are still a little bit worse, this is not to say.

Of course, the Haute Horlogerie brands are much more demanding on themselves, and most watchmaking brands will use the Swiss Official Chronometer Standard, which requires an accuracy of -4 + 6 seconds per day. The pursuit of precision is the direction of many watch brands, so in recent years, there is a stricter standard in the industry - "Master Chronometer Certification", which requires the watch to have a daily error of 0 +5 seconds under a strong magnetic field of 15,000 gauss, which can be said to be the industry benchmark.

There are a few common situations where the watch suddenly increases its error.

Lack of power: If the quartz watch suddenly finds that it is slowing, it is most likely caused by a lack of battery energy, and you can send the watch to the special.

Check the power level at the maintenance point.

Insufficient power reserve: You need to check if the power is sufficient, as a self-winding watch can also be built if you have a small amount of exercise.

If the power reserve is insufficient, the power can be replenished by manual winding, and then observe whether it continues to be fast or slow.

The watch is magnetized: If the hairspring of a mechanical watch is magnetized, the watch will not be accurate.

Need for maintenance: Lack of oil or wear and tear of internal parts of the movement may cause time problems, and it needs to be sent to a designated repair point.

Maintenance services.

Hit or hit: The watch is very precise, and if it is hit or hit, it may cause loose damage to the internal parts.

Can cause timekeeping problems.

In addition to the above common situations, some environmental temperature influences and wearers' usage habits may cause time-lapsing.

Increase in error. But you don't need to worry, please send the watch to the designated repair point for professional inspection and adjustment.

Return the watch to its normal error range.

4 seconds of congestion is more than the error of the Zheng section, because the movement setting of the mechanical cluster hole watch is not the same, so it will be affected by some environment when walking, and there will be some errors.

There is an error of 5 seconds. Because the movement will slowly wear out during the process, it is normal for lead and loss to have a relatively small error.

The error of my mechanical watch is about 6 seconds a day, because the mechanical watch is operated by a movement, and there will be errors when the movement is running.