DYNAMICS OF A CIRCULAR KNITTING MACHINE WITH A DEVICE OF REDUCTION OF DYNAMIC LOADS WITH TWIN SPRINGS

The issue of improving the efficiency of circular knitting machines remains relevant, so the task of research is to develop a new design of circular knitting machine with a device to reduce dynamic loads with torsion springs, engineering method of choosing rational parameters of the device, and evaluate its efficiency. The aim of the work is to analyze the feasibility of using a device with torsion springs to reduce the dynamic loads in the drive of circular knitting machines, to develop a method for selecting rational parameters of the device and evaluate the effectiveness of its use. The article uses modern methods of the theory of dynamics of mechanical systems in order to assess the feasibility of using a device with a torsion spring to reduce the starting dynamic loads in the drive of machines. Based on the analysis of the dynamics of mechanical systems with elastic ties, an algorithm for calculating the dynamic loads that occur during the start of circular knitting machines, the calculated dynamic model of which is reduced to a three-mass dynamic model with an average leading mass. A new design of the device is proposed to reduce the dynamic loads that occur during the start of circular knitting machines. In contrast to the known devices, the proposed device is made in the form of two cylindrical torsion springs and bypass couplings, which increases its efficiency. The new design of the drive of the circular knitting machine with the device of reduction of dynamic loadings with torsion springs, a method of a choice of rational parameters of the device and results of an estimation of efficiency of its use are presented. A scientific novelty is the development of scientific bases and engineering methods for designing devices for reducing dynamic loads in the drive of knitting machines. The practical significance lies in the development of a new design of the device for reducing dynamic loads in the drive of circular knitting machines and an engineering method for selecting its rational parameters.