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Machine-building technologies
ArticleName Extraction of square box parts with lateral pushing and squeezing
DOI 10.17580/chm.2021.08.10
ArticleAuthor Yu. V. Bessmertnaya, S. N. Larin

Tula State University (Tula, Russia):

Yu. V. Bessmertnaya, Cand. Eng., Associate Prof., Dept. of Plastic Forming Mechanics, e-mail:
S. N. Larin, Dr. Eng., Prof., Head of Dept. of Plastic Forming Mechanics


Modern development of mechanical engineering sets the tasks consisting in increasing of quality of produced parts, development and introduction of waste-free and lowwaste technological processes. Non-waste and low-waste production reduces the cost of raw materials, which affects the production cost and leads to increased profits. New technological processes for obtaining square box parts can be used at various enterprises of the rocket and space complex, defense industry, aircraft construction, shipbuilding, instrument making, construction, energy, as well as at enterprises producing consumer goods. Also square box parts can be used as metal packing, i.e containers. This is a strong, reliable package that has a low weight and a number of advantages. Manufacture of this type of parts is used in mass and largescale production. In modern mechanical engineering, sheet metal stamping operations are widely used, in which up to 30% or more of metal is discarded when using round and profile blanks. It should be noted that 90% of the cost of finished parts is the cost of metal, so the development of manufacturing technologies in which raw materials are used rationally, is currently an urgent task. The article presents a method of manufacturing square box parts from a square sheet blank, which reduces or eliminates crowning in a square shell. The choice of a square blank is due to the fact that when it is produced, the utilization factor of the material during cutting is 100%. Reducing waste on a large scale leads to significant savings.
The research was conducted within the framework of the grant NSh-2601.2020.8.

keywords Drawing, extrusion, square box part, crowning, square blank, force, stress, deformation, destruction

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