DOI: https://doi.org/10.32347/2410-2547.2019.103.112-130

Dynamic balancing of drive mechanism of roller forming installation with energy balanced drive

Viacheslav Loveikin, Kostiantyn Pochka, Mykola Prystajlo, Olga Pochka

Abstract


In order to increase reliability and durability dynamic balancing of drive mechanism of roller forming installation with energy balanced drive is considered. When simulating the process of balancing the drive mechanism, two tasks of dynamic balancing are solved: balancing of inertia forces applied in cents of masses of movable links, and balancing of torque moment brought to the axis of rotation of the drive shaft resulting from the action of inertia forces. At the same time all kinematic characteristics of forming trolleys of the installation are defined, functions of kinetic energy of each element and the whole system, forces of inertia of each element of the installation and total force of inertia, total moment from action of inertia forces are recorded. On the basis of Lagrange equations of the second kind, the equation of the motion of the installation is compiled and the generalized force and driving moment on the shaft of the drive motor are determined. Unbalance of drive mechanism is estimated by maximum and standard values of total inertia force and torque total moment from action of inertia forces, dimensionless coefficients expressing a ratio of the standard values of the total inertia force and inertia forces reduced to the center of mass of the apparatus; acting on each trolley, and ratio of standard values of moment from action of inertia forces of the whole mechanism and components of moment from action of inertia forces of individual elements. It has been found that in an energetically balanced drive unit, the best balancing of the inertia forces applied in the centers of mass of the links and the torque brought to the rotation axis of the drive shaft resulting from the action of the inertia forces is observed at the value of the displacement angle of the cranks 1200. The received results can be used further for the specification and improvement existing engineering by method of calculation of driving mechanisms of cars of roller formation both at design/designing stages and in the modes of real operation.


Keywords


roller forming installation; driving mechanism; inertia force; moment; balancing

References


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