From the development trend in foreign countries, a new generation of NC machine tool in order to improve the production efficiency, the super high speed development, using a new type of functional components (electric spindle, linear motor etc.) to realize high speed machining. The required electric spindle and linear motor is through swelling link sets will be directly connected to the motor and spindle, saves the transmission mechanism, the realization of super high speed. A CNC machine at least needs five or six sets of coupling, more than fifty or sixty sets of coupling. This shows that this is a very large market. Coupling industry becoming more and more popular, and the business management and other factors, will appear a kind of trend in the coupling of industry in the near future, we analyse the.

One is the coupling will be very large, high precision, long service life, high efficient and long-lasting, healthy development.

The two is the integration of a variety of materials, a variety of color coupling, multiple cavity, forming a variety of methods will be developed.

Three is the coupling of the steel must be refined, in order to ensure the stability of raw material properties, this coupling will become the market mainstream products.

Four is the coupling design, processing and management will be the development of digital, information-based direction.

Five is the various coupling processing equipment with higher speed, higher accuracy, more intelligent will get further popularization and application.

Six is due to the popularization and application of new materials in the coupling in the industry, more high performance, meet the coupling will be special purpose development, will produce some special, more advanced processing methods.

Seven is the reverse engineering, concurrent engineering, composite processing and virtual technology will be further developed.

Eight is the coupling degree of standardization will increase along with the high-speed development of modern metallurgy industry, put forward higher requirements on metallurgical enterprises to use the coupling. It is not only to meet the high-speed, heavy-load, manufacturer of high precision requirements, should also meet the stable operation, high transmission efficiency, long service life, easy maintenance etc..

The shaft hole type couplings are three kinds of Y type, J type and Z type, the J type is divided into J type and J1 type, Z type is divided into Z type and Z1 type. The keyway type is divided into A, B, B1, C, D five, what is the importance of the shaft hole and keyway type poetic couplet axis device? The shaft hole type and keyway type is decided according to the type of coupling shaft hole and slot type two shaft, when data are accurate, can ensure the coupling can be very good to be connected to equipment needed to complete two connected together, to work, to play the role of purpose.

The first coupling shaft hole type: Y type shaft hole is a long cylindrical shaft hole; the J shaft hole of J type and J1 type, J type is a short cylindrical shaft hole hole, J1 type short cylindrical shaft hole without counterbore; Z type shaft hole of Z type and Z1 type, Z type there is a short conical shaft hole hole, Z1 type is short conical shaft hole without sink hole, in which Z axis hole taper is 1:10.

Type keyway coupling and coupling: A single groove is a flat key; B was 2 120 keyways degree distribution; B1 was 2 180 keyways degree distribution; C single groove is a conical hole; D is a cylindrical shaft hole of ordinary tangential key groove.

Coupling is widely used in metallurgical machinery, heavy machinery, mining, lifting, transportation machinery, papermaking, metallurgy, textiles, shipbuilding, machinery, transportation, chemical industry, light industry equipment.

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