The clock is a timing device and a precise instrument for measuring and indicating time. Clocks are usually distinguished by the size of the internal machine. According to international practice, clocks and watches with a movement diameter greater than 80 mm and a thickness greater than 30 mm; A pocket watch with a diameter of 37 ~ 50 mm and a thickness of 4 ~ 6 mm is called a pocket watch; Watches with a diameter less than 37 mm; A watch whose diameter does not exceed 20mm or whose movement area does not exceed 3 14m2 is called a women's watch. The watch is one of the smallest, strongest and most sophisticated machines invented by human beings.
Commonly used tools mainly include the following four kinds.
1. Watch calibrator is an essential testing instrument for maintaining mechanical watches. Mainly used to measure the speed of clocks and watches. The calibrator of paper tape recording watch can also check the defects of the watch according to the shape of the recording line, so as to determine the cause of the failure. There are many kinds of instrument calibrators, including digital display and paper tape recording. There are two kinds of paper tape recording forks: one is to record graphics (that is, lines) and the other is to record numbers. It is best to use record charts for maintenance. When calibrating the watch, put the watch to be tested on the microphone 8, put the handle in the fixed clip, and then clamp the watch with the movable fork. By rotating the microphone box, the instantaneous daily difference of six different positions of the watch can be measured.
Clock calibrator
2. Clock amplitude meter machinery, the amplitude of clocks and watches is generally measured on the amplitude meter. There are three types of amplitude scoring: pointer, point and digital. There are mainly AMPLIMETER, the pointer amplitude meter produced by Greener factory in Switzerland. Because the design principle of the amplitude meter is related to the full lift angle of the balance wheel of the watch machine, and the full lift angle of the balance wheel is a parameter determined when designing the movement, the value of the full lift angle of the balance wheel is different for different models of movements. The parameter values of the balance wheel full-lift angle of the mechanical watch movement are different, so that it can be selected when measuring the amplitude. If it is specified in advance that the amplitude of the measured machining center is 200. -280。 Is qualified within the range of, then when the pointer enters this range, the indicator light 3 will light up. The selection of measuring range is realized by adjusting the three regulators A, B and C at the top of the amplitude meter.
3. Watch microscope, stereo microscope is commonly known as double-tube microscope. It's a microscope for cultivating three-dimensional sense. The magnification can usually be changed from 4 times to 100 times, with 10 steps in the middle. Using stereo microscope, the movement of quartz watch and its parts can be enlarged for careful observation. In general, it is enough to wear an inch mirror to repair the watch, but the magnification of the inch mirror is limited. Sometimes it is not easy to observe the stopwatch caused by burr of parts, or the stopwatch caused by friction between parts, and the defect that parts are secretly lost. If you look at it under a stereoscopic microscope, the reason will be clear at a glance. In addition, in order to repair the unfamiliar movement, it is necessary to know the structure of each part of the movement under the stereo microscope in advance.
4. Clock degausser, whether in work or in daily life, the application of electrical equipment is more and more extensive. When electrical equipment works, it will inevitably produce magnetic field. When the watch is close to the strong magnetic field, the Swiss watch parts will have different degrees of magnetization. Magnetized mechanical watches generally go fast. When the magnetic field strength continues to increase, the magnetized hairsprings stick to each other, and the watch stops. Once the manipulator belt is found to be magnetized, it must be demagnetized on the demagnetizer.