An air spring is now designed and developed in place to replace imported products in test equipment. Structure of the electric port The mechanical part (shown) of the electric table is mainly composed of a moving coil, a guide assembly, a magnetic circuit assembly and a bracket 4 . The moving coil is the source of vibration. The moving coil is connected to the other parts of the system through the guiding assembly, and a spring is required in the guiding assembly. The main body of the electric table is placed on the working ground through the bracket, so a spring is also needed between the main body of the electric stand and the bracket to reduce vibration and vibration isolation. There is a problem that needs to be paid attention to, that is, when the turntable clamp clamps the pin, the movement of the entire roller mechanism is controllable, and when the clamp is loosened, the roller mechanism has no limit mechanism in the circumferential direction, and its movement will be Out of control, so a turntable bolt is designed to bolt the positioning shaft on the right side of the foaming fixture. The main function of the dial bolt mechanism is to complete the locking of the drum during the period of the idle shaft of the turntable clamp. However, due to the large force on the pin shaft, it is easy to loosen and shift by screw fixing. Therefore, the right turntable is partially strengthened during design, and 8 holes are formed in the reinforcing area, and the pin is equally divided along the circumference. The pin shaft is matched with the gap. Insert these 8 holes. One end of the pin shaft is provided with two wear-resistant pieces, which cooperate with the clamp block in the turntable clamp. By grinding the thickness of the wear-resistant piece, the eight shafts and the clamp block can be well matched, and the tilting of the drum when rotating is eliminated. The other end of the pin shaft is equipped with an anti-rotation pin to prevent possible rotation of the pin shaft, so that the pin can be accurately clamped by the clamp every time. Due to the success of the overall design, the actual commissioning of this equipment has been smooth and has been operating normally for more than 2 years, creating good economic benefits. The four main components of the air spring designed by the author, Junchuan, change its structural form according to the actual design requirements, and even make a certain part or parts of the air spring become an integral part of the equipment; or according to the actual structural form of the equipment. One or more parts of the apparatus are air springs. The pistons and the anisotropic sections shown in the air springs are used by the electric stage to become one of the two guiding groups of the moving coil of the electric stage. This type of structure makes full use of the limited space, and the reduction in the number of parts of the mountain J fly reduces the manufacturing cost and production cycle, greatly enhancing the competitiveness of the product in the market. By utilizing the existing space and the semi-closed structure of the lower half of the electric frame, the air chamber portion of the air spring and the lower half of the frame are integrated, thereby making the structure of the electric table more compact and utilizing 4 The symmetrically distributed air spring piston itself has an anisotropic action in the vertical direction. In the structure of the air spring, the original guiding portion of each air spring can be omitted. The air spring has been obtained in the electric platform of different specifications. The expected results have been achieved, and many technical indicators have been measured to exceed the similar imported products. The structure of a common air spring is as shown. When the air spring is compressed or stretched, the volume in the air chamber changes. The volume change causes the pressure of the gas in the air chamber to change. When the volume of the air chamber is not large enough, the air spring is deformed. When the amount is large, excessive pressure changes will cause the air spring to rupture or load failure. Therefore, in the application design of the air spring, a certain volume of the external air chamber should be appropriately matched according to the use conditions, as shown. The air spring is used for vibration isolation and support of the electric table. Its performance and advantages, such as it can provide a very low resonance frequency, generally less than 3, even in the case of reasonable structure and layout, can reach IHz. Since the air spring obtains the vibration isolation effect by the pressure change of the compressed air in the air spring rubber airbag, the isolation vibration, especially the high frequency vibration, has an excellent effect. A practical air spring conventional air spring has many advantages in terms of performance, but its use in vibration equipment is greatly limited due to its complicated manufacturing process, high manufacturing or purchase of wood. For example, in the electric station, it is generally necessary to use 5 pairs of air springs, so the use of air springs greatly increases the manufacturing cost of the electric table. The author has studied the working principle of the air spring and combined practical experience. Design and develop an air spring of the structure shown in the actual production of the electric bench.