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Tooth phenomenon and material of gear coupling

Characteristics of gear coupling:
The gear coupling is a new type of coupling developed by our country, which concentrates the advantages of different structures of the existing standard elastic coupling, such as the advantages of the plum-shaped elastic coupling: the elastic element is compressed, the structure is simple, and the sex is high. It overcomes the shortcomings of the plus-shaped elastic coupling: the half coupling is moved when changing the elastic element, the double-flanged plus-shaped elastic coupling and the moment of inertia, and the application range is limited. When transmitting the same torque, the radial size is much smaller than GB 4323 elastic sleeve pin coupling, light weight and small moment of inertia.

Tooth coupling phenomenon:
Type coupling in inner and outer tooth set, cutting phenomenon the reason is that material without high frequency quenching treatment, or is the internal and external tooth dimension clearance error is bigger, so in the case of high speed operation will be cutting phenomenon. Secondly, there is also a case that the curvature of the external teeth is relatively large, and the characteristics of the two axes will be found not in the same horizontal line between the two axes of torque transmission, and the curvature radius of the drum curve is proportional to the thinning amount of the internal teeth on one side, so the radius of the drum circle should be as large as possible. The curvature radius of the drum curve is proportional to the thinning amount of the inner tooth on one side, that is, it is related to the meshing clearance of the teeth to cause the phenomenon of the inner and outer teeth, which affects the service life of the coupling.
In the transmission of the gear coupling, the bolts may break, the noise is larger, and the teeth are broken. If such a phenomenon occurs, the coupling should be removed immediately, for analysis and inspection, and to carry out regular maintenance and inspection of the coupling, you can inject butter, but also need to replace the bolts, so as to increase the service life of the coupling.

In SUMMARY:
The tooth coupling bolt is a ream hole bolt connection, and the diameter of the screw part is the same as the basic size between its holes, which is a transition fit (not a gap fit). When there is relative sliding between the connected parts, the shear action of the bolt itself is relied on to prevent its movement, so only a small pre-tightening force is required. The unthreaded part of the reamed hole bolt is the same as the basic size of the hole wall and belongs to the fit; The unthreaded part of the ordinary bolt is different from the basic size of the hole wall and does not belong to the fit. On the drawing, it is that the reamed hole bolt and the hole wall are composed of a line; The ordinary bolt and the hole wall are composed of two lines.
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