Development and types of the hottest reducer

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Development and types of reducers

development of reducers

from the 1970s to 1980s, reducer technology in the world has developed greatly, and is closely combined with the development of new technological revolution. The development trend of general reducer is as follows:

① high level and high performance. Cylindrical gears are generally carburized, Quenched and ground, and the bearing capacity is improved. One of the future research is to launch the innovative plasticizing concept energizer, which is more than 4 times smaller, lighter, less noisy, more efficient and more reliable

② building block combination design. The basic parameters adopt the priority number, the size and specification are neat, the parts have strong versatility and interchangeability, and the series is easy to expand and renovate, which is conducive to organizing mass production and reducing costs

③ diversified types and many variant designs. It gets rid of the traditional single base installation method, and adds different types such as hollow shaft suspension, floating support base, integrated connection between motor and reducer, multi-directional installation surface, etc., so as to expand the scope of use

the main factors that have prompted Evonik industries, the world's leading manufacturer of special chemicals, to plan to improve the level of mass production of composite materials are:

① theoretical knowledge is becoming more and more perfect and closer to reality (such as gear strength calculation method, modification technology, deformation calculation, optimization design method, smooth transition of tooth root, new structure, etc.)

② good materials and various high-quality alloy steel forgings are widely used, and the quality control level of materials and heat treatment is improved

③ the structural design is more reasonable

④ the machining accuracy is improved to iso5-6 level

⑤ improve the quality and service life of bearings

⑥ improve the quality of lubricating oil

since the 1960s, China has successively formulated the standards for a number of general reducers, such as jb1130-70 cylindrical gear reducer. In addition to the self-made supporting use of the main engine factory, a number of professional reducers have also been formed. At present, there are hundreds of enterprises producing speed reducers nationwide, with an annual output of about 250000 general speed reducers, which has contributed to the development of mechanical products in China

most of the reducers in the 1960s were manufactured with reference to the technology of the Soviet Union in the 1940s-1950s. Although they developed later, they were limited to the design, process level and equipment conditions at that time, and their overall level was far behind the international level

Since the reform and opening up, China has introduced a number of advanced processing equipment, and gradually mastered the design and manufacturing technology of various high-speed and low-speed heavy-duty gear devices through the introduction, digestion and absorption of foreign advanced technology and scientific research. The quality of materials, heat treatment and gear processing accuracy have been greatly improved. The manufacturing accuracy of general cylindrical gears can be improved from grade 8-9 of jb179-60 to grade 6 of gb10095-88, and the manufacturing accuracy of high-speed gears can be stabilized at grade 4-5. After some reducers adopt hard tooth surfaces, the volume and mass are significantly reduced, and the bearing capacity, service life and transmission efficiency are greatly improved, which plays a great role in saving energy and improving the overall level of the host

the power of the high-speed gear reducer (accelerator) designed and manufactured by China has reached 42000kw, and the peripheral speed of the gear has reached more than 150m/s. However, the technical level of most reducers in China is not high, and the old products cannot be replaced immediately. The coexistence and transition of new and old products will take a long time

type of reducer

reducer is a relatively precise machine. The purpose of using it is to reduce speed and increase torque. It has a wide variety, different models and different uses. There are many kinds of reducers, which can be divided into gear reducers, worm reducers and planetary gear reducers according to the transmission type; According to the different transmission stages, it can be divided into single-stage and multi-stage reducers; According to the gear shape, it can be divided into cylindrical gear reducer, conical gear reducer and conical cylindrical gear reducer; According to the layout of transmission, it can be divided into deployable, shunt and coaxial reducers. The following are the commonly used reducer classifications:

⑴ cycloid pin gear reducer

⑵ hard tooth surface cylindrical gear reducer

⑶ planetary gear reducer

⑷ soft tooth surface reducer

⑤ three ring reducer

⑥ crane reducer

⑺ worm reducer

⑶ shaft mounted hard tooth surface reducer

⑼ stepless transmission <

the worm gear worm gear reducer has a reverse self-locking function at 2 p.m. on May 5, It can have a large reduction ratio, and the input shaft and output shaft are not on the same axis or plane. However, the general size is large, the transmission efficiency is not high, and the accuracy is not high. The harmonic drive of harmonic reducer uses the controllable elastic deformation of flexible components to transmit motion and power. It is small in size and high in accuracy, but its disadvantages are that the flexible wheel has limited service life, is not resistant to impact, and its rigidity is poor compared with metal parts. The input speed cannot be too high. Planetary reducer has the advantages of compact structure, small return clearance, high precision and long service life. It is simple and convenient to use microcomputer hydraulic servo universal testing machine to test the mechanical properties of materials, and the rated output torque can be very large. But the price is a little expensive. (end)

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