Roller Forming Unit Dynamic Analysis with Energy Balanced Drive Dissipative Properties Taken into Account

• Main Authors: Loveikin, V. S., Pochka, K. I., Romasevych, Yu. O.
• Format: Article
• Language: English; Ukrainian
• Published: Journal of Mechanical Engineering 2018
• Subjects: roll forming unit; drive; force; moment; rigidity; dissipation; UDC 693.546; роликовая формовочная установка; приводной механизм; усилия; момент; жесткость; диссипация; УДК 693.546; роликова формувальна установка; приводний механізм; зусилля; жорсткість; дисипація
• Online Access: https://journals.uran.ua/jme/article/view/135427

In order to increase the reliability and durability of a roller forming unit with an energy-balanced drive, loads in the unit structure elements and drive are calculated, dependencies for identifying efforts in the connecting rods, necessary for setting the forming trolleys in reciprocating movement, and normal reactions of the forming trolley guide rails to the guide rollers depending on the rotation angle of the cranks are obtained. For researching into loads, a two-mass dynamic model of a roller forming unit is used, in which the load and inertia characteristics of the drive motor and each of the forming trolleys as well as rigidity of the drive and its dissipation are considered. Function of change of the required moment for ensuring the process of compacting products from building mixtures, taking into account drive dissipation, is defined. By the average value of the resistance moment for one crank rotation cycle, the rated power is chosen, on which the electric motor, clutches and reducer are chosen. Using Lagrange's equation of the second kind differential equations of movement are worked out for a roller forming unit with an energy-balanced drive presented by a two-mass dynamic model. As a result of the numerical experiment for a roller forming unit with an energy-balanced drive, the value of the drive rigidity (reduced to the crank rotation axis) at which the minimum loads in the drive clutches are observed, is determined. Dependence of the drive clutch torque from the dissipation coefficient value is determined. The recommended dissipation coefficient value for a roller forming unit with an energy-balanced drive is determined.