Importance of fatigue strength of drum gear coupling

Drum gear coupling product use effect we all know, in front of you have discussed this problem, let's talk about the importance of drum gear coupling fatigue strength.

Middle and low speed and heavy load transmission system is mostly used drum gear coupling, the product has the advantages of bearing reciprocating load and strong impact resistance, which belongs to the coupling of non-elastic components flexible components. Drum gear coupling applicable conditions determine the importance of strength performance stability, drum gear coupling torque transmission is mostly drive shaft end tooth transfer to the inner tooth, and then through the two half coupling flange connection bolts, in the transfer to the passive end of the inner tooth ring, in the transfer to the passive shaft end of the outer tooth to achieve, Thus it can be determined that the coupling fittings of the drum gear coupling should be connecting bolts, and the failure of the coupling should be connecting bolts failure, rather than the overall scrapping of the coupling.

In order to achieve this effect, the coupling manufacturer to coupling nominal torque set in the coupling accessories (connecting bolts), according to the coupling nominal torque to determine the diameter and number of connecting bolts and strength grade (8.8, 10.9, 12.9, etc.), and the two half coupling teeth inside and outside the strength to match the overall strength of the transmission system.
The importance of fatigue strength is particularly critical because of the manufacturing cost and complex operating conditions of drum gear coupling. The high-frequency treatment of tooth surface and the overall nitriding treatment only improve the surface hardness of teeth, while the overall conditioning treatment of coupling is an effective measure to improve the strength of the internal organization of the coupling.

The improvement of fatigue strength of the drum gear coupling is not only to improve the service life of the two halves of the coupling, but also to improve the service life of the two halves of the coupling bolt (coupling accessories) (reduce the diameter of the hole caused by impact), so as to achieve the high quality manufacturing of the drum type coupling.