Agarkov V. Improving universal modular readjustable stamps trough the optimization of design parameters arrangements in machinery production

Object of study: separation operations of sheet metal stamping with using universal modular readjustable stamps. The aim of the study: enchancing the technological capabilities of universal modular readjustuble stamps for sheet metal forming separation operations by optimizing the design parameters of layouts under multiproduct production. Research methods: theoretical study of the force interaction design elements of the universal modular readjustable stamps was performed using a variational finite element method. Experimental studies were carried out using the methods of static and dynamic strain measurement, holographic interferometry in both laboratory and production environments. Theoretical and practical results: developed designs of new elements layouts for expansion of technological capabilities sets of universal modular readjustable stamps; developed the assembly technology of universal modular readjustable stamps, including for operations combined and sequential action; provided recommendations on the selection of materials for the manufacture of layouts of universal modular readjustable stamps using composite materials and plastics; defined the effective scope of the proposed constructions of universal modular readjustable stamps to perform separation operations of sheet metal stamping. Scientific novelty: was further improvement mathematical model of force interaction of base and work elements of universal modular readjustable stamps, which allowed us to determine the power mode of deformation with the influence of the geometric parameters of the stamped parts and material thickness; scientifically justified force loading conditions, bearing and fixing stamps on the press table, possible to establish rational schemes operating layouts of universal modular readjustable stamps aggregate-based modular approach; for the first time based on a study of the stress-strain state of the basic elements of universal modular readjustable stamps the degree of influence of geometrical parameters on stiffness and strength, that allowed us to obtain the analytical dependence for their calculation; for the first time scientifically defined rational design parameters of structural elements layouts of universal modular readjustable stamps given production conditions at separation operations. Degree of implementation: results introduced in production by state-owned enterprises Kharkov machinebuilding factory "FED" (Kharkiv) and Scientific-Production Enterprise "Equipment" (Kramatorsk) with economic impact of about 150 thousand hrn.per year. Application area: results of work can be used in sheet stamping productions of multiproduct engineering manufactures of Ukraine and in educational process of technical secondary and higher aducational institutes of Ukraine.