Talk to everyone today about the escapement. Escapement is the heart of modern mechanical watches and clocks, the original escapement was born in the 15th century, and gradually evolved to the present various appearances. Hundreds of escapements are still used on modern timepieces. Escapement is a mechanical energy transfer switch device, the switch is controlled by the timing reference to the clock with a certain frequency switch the main drive chain, so that the instructions to stop the phase and with a certain average speed, indicating the exact time . The function of escapement can be understood from two aspects: capture, the movement of the main drive lock (capture), at this time, the watch's main chain is locked; vertical, is part of the oscillation system potential energy, open ) The main drive chain moves while retrieving a certain amount of energy from the main drive chain to keep the turbulence system working. Escapement speed regulation mechanism is the heart of the mechanical watch, by the escape wheel, pallet fork and balance wheel composition . Escapement wheel escapement escapement escapement of a longitudinal, to complete the lock, pass Chong, the release of the action, the power transmission to the balance wheel, the balance wheel to complete the distribution of time to speed effect. Escape fork In the lever escapement, the pallet fork is a small parallelepiped made of ruby, sapphire or garnet, arranged on each lever arm. One is to enter the fork, the other is the exit fork. The pallet fork includes a fork body, a fork nail, a fork body, a fork shaft, and an inlet shoe and a shoe disposed on both ends of the fork body. An escapement fork from the production, decoration, to go through dozens of assembly process. Features fork body and fork head, fork body from the fork shaft connection is divided into two bodies. The fork body is self-contained, the shaft hole is arranged in the middle, the fork nail is connected with the fork body, and the shaft hole is arranged at one end of the fork body which is connected with the fork shaft according to the structure of the balance wheel And the corresponding point of points, the next two layers and fork shaft tight fit connection. Balance wheel The balance wheel consists of a general bearing consisting of a pendulum shaft, a wheel rim, a pendulum beam, a peg, a balance spring, a double disc, and a disc nail. The balance spring connected with the balance spring drives it to reciprocate and cut the time into exactly the same aliquot, which has a decisive influence on the travel time of the watch. Each round of reciprocation is called swing frequency, 1 swing frequency subdivided into 2 frequency. Mechanical watch go wrong, it depends on the balance of the swing, that is, the magnitude of the wheel swing. The balance of wheel operation directly affects the accuracy of travel time. Whether the balance wheel balance depends on whether its texture is uniform or not depends on its roundness, while the roundness is related to the number of balance arms. Common with two arms, three arms or four arms. In other words, the more the balance of the axis of the balance wheel, the closer it is to the theoretical true circle, the more stable it operates and the more accurate it travels. Compared with the hairspring part of the adjustment, the difficulty of adjusting the balance will be much higher, usually need to be carefully adjusted by experienced watchmakers by hand, so that the weight of each part of the balance to avoid the direction of the difference produce. In addition to the ring balance (light pendulum), the balance can be adjusted on the balance must have symmetrical screws or weights, these screws or weights is the adjustment point. Temperature changes have a negative effect on the watch because the temperature changes the elasticity and effective length of the steel balance spring. High temperature will make hairspring inflated, take time to slow down, low temperature will make gossamer contraction, go faster. Therefore, in the automatic compensation springs invented before, watchmakers in Switzerland have adopted bimetal compensation balance wheel. That is to say, the two kinds of metals rely on different expansion coefficients to achieve the purpose of temperature error compensation. Several common balance wheel: Glucydur balance, screw balance, weight balance, Gyromax balance, Rolex balance. gossamer Hairspring is a very thin spring, usually steel as the material, coiled around the balance wheel. The change of effective length of gossamer determines the moment of inertia and the amplitude period of the balance. Gossamer parts from gossamer, pile, composed of piles. The hairspring is mounted on the balance shaft through the inner piles, and the outer piles are fixed on the pendulum plywood. The hairspring components cooperate with the balance wheel components to produce a stable oscillation period that determines the travel time accuracy of the watch. Therefore, the material, length, thickness, stiffness and hairspring frame distance of the hairspring directly affect the travel time quality of the watch. Most of the watch is a balance spring, the shape of a Archimedes spiral shape. The hairspring into the balance of the deployment direction of right-hand, left-handed points, watch the assembly surface from the watch movement of the development of the spring, clockwise to spin out of the right-handed, counterclockwise spin out as the left-handed. The company is located in: After the balance spring assembly is loaded into the watch machine, it is free from the external force and is in a state of rest and freedom. That is, the disc nail is in the position of connecting the center of the two shafts of the balance wheel and the pallet fork. In this case, Balance the position, which is commonly known as "three-point line." Shock Absorbers Shock absorbers are devices that prevent the watch from damaging as a result of impact shocks. Escapement system as the core of the watch, the balance wheel is large and continuous high-speed operation, however, the ends of the balance wheel are only adult hair thickness, very fragile, if the watch vibration, the balance wheel ends easily broken. The solution is to install shock absorbers on both ends of the balance wheel axle to cushion the impact on the balance axle. Several typical shock absorbers: 1. In 1790, Mr. Breguet invented the Parachute Susrension. In 1933, Universal Escapement of Switzerland introduced Incabloc; 3, 1944 KIF shock absorber; 4, late 90s Etashoc shock absorber (triangular shock absorber); 5, 2005 Rolex launched Paraflex shock absorbers; 6,2006 Swatch Group Breguet 777Q new generation of automatic movement using the new Nivachoc shock absorbers;