Screw Press with Clutch Engagement and a Separate Driving Flywheel Mass
DOI:
https://doi.org/10.37142/2076-2151/2025-1(54)183Keywords:
screw press, kinetic energy accumulation, driving flywheel mass, clutch engagement, autonomous reverse motion, inertial loads, thermal overloads, energy efficiency.Abstract
Obdul V., Matiukhin A., Yepishkin O. Screw Press with Clutch Engagement and a Separate Driving Flywheel Mass.
The paper examines the design features and energy aspects of screw presses with a nominal force of 2 MN and above, and with an impact energy of up to 5 MJ, intended for precision stamping of complex critical parts made from refractory and hard-to-deform materials. These characteristics allow for a significant expansion in the range of applications of such presses, particularly for manufacturing large-scale drop forgings with enhanced precision, compressor and turbine blades for gas turbine engines, gears, and other products with high requirements for dimensional accuracy and surface quality, without the need for stamping inclinations in the die. An analysis is conducted of modern technical solutions from leading manufacturers, such as Weingarten and Hasenclever, particularly of the RZS type designs, where the working flywheel serves as the rotor of an electric motor and is rigidly connected to the screw. Their shortcomings have been identified, including high peak loads on the electrical network, significant energy losses, thermal overloads, and low efficiency in transient operating regimes. A new screw press design with an alternative drive is proposed, which incorporates an accumulator of kinetic energy in the form of a driving flywheel mass that is kinematically coupled with the working flywheel via a clutch. The kinematic scheme of the drive and methods for reducing inertial loads by dividing the driving flywheel mass into several parts are discussed. Recommendations for implementing an autonomous reverse movement of the slider and for improving the operating conditions of the press to enhance its efficiency and reliability are provided.
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