DRIVE COUPLING WITH A PACKAGE OF COIL SPRINGS: CALCULATION OF TORSIONAL STIFFNESS AND STRENGTH OF SPRINGS

Abstract

One of the ways to reduce dynamic loads in machine drives is the use of couplings with low torsional stiffness. When the torque is transmitted by the coupling, the elastic elements deform, increasing the time of energy transfer from one coupling half to another, thereby reducing dynamic loads. The lower the stiffness of the coupling, the less dynamic loads. If a coupling with serpentine springs is used to reduce stiffness, instead of a single spring, a package of such springs should be used, the cross-sectional dimensions of which are the same as the cross-section of a single spring. In this case, the stiffness will decrease in comparison with a single spring by a number of times equal to the number of springs of the package raised to the second power.