Features of the power calculation of universal stands of the roll forming mill

The paper deals with the issues of calculation and design of structures of universal stands of roll forming mills intended for the production of low-tonnage batches of roll-formed profiles for agricultural engineering. It has been established that among the many publications on the issues of technology and equipment for profiling, there is no information regarding the power calculation of mill equipment that could be used in the design of new mills for the manufacture of profiles in small-tonnage batches. The aim of the work is to determine the forces and torques acting on the structural elements of the universal working stand of the roll forming mill for the general case of forming a sectioned asymmetric profile of the channel type, as well as to develop an equivalent design scheme for the action of these forces for the force calculation of the mill stand when desig new equipment. Based on the studies performed, expressions were determined for calculating the total forces from bending the shelves and the channel wall, as well as the torques acting on the working surfaces of the vertical non-driven rolls of the universal working stand, an equivalent design scheme of the forces acting on the frame and the reactions of the corresponding supports, which can be used for force calculations of universal stands of newly designed roll forming equipmen