CONTRIBUTIONS REGARDING THE OPTIMIZATION PROCESS OF THE BENCH DRAUGHT BAR IN THE ROLLING MATERIAL INDUSTRY

The paper is developed in conditions of elaboration of a research grant realised between University “Politehnica” from Timișoara and S.C. MEVA S.A. regarding the optimization of the processing procedure (according to the stipulation from STAS 3135-76.) of the bench draught bar. It was considered as a factor of progress in optimization of the technological process the utilization of the simulation concept in the manufacturing of such components (draught bars). 1.Introduction, objectives The paper presents the result of the researches obtained by the contractual collaboration established between University “Politehnica” of Timisoara and SC MEVA SA Drobeta-Turnu-Severin, referring to the processing optimization of the bench ”draught bar” in the industry of rolling material. The product representing the research object (draught bar) is tested to elongation, crushing and shearing for which the modeling was made using the 3D soft SolidWorks, starting from the execution drawing of the bench draught bar. This 3D model was applied in the simulations hich use the finite element method, as well as for creating the technological itinerary using CAM soft, defined by the STAS 3135-76. According to these specifications, for the bench ”draught bar” has been elaborated a simulation of the real conditions of functioning [4] using the analysis with finite element (ABAQUS/CAE), which highlighted correct value results in the area of the restrictions stipulated in the STAS attached to the manufacturing conditions. As well, in the paper there are presented the contributions related to the elaboration of the optimization method for the processing of the bench draught bar using the simulation method, conditions for which there was accepted the development of the modeling in the real conditions of the manufacturing capabilities, specific to a certain company, for which will covered be the following stages: The first step in the simulation conception is to import into a CAM software the 3D model and the conception history of the model (the conception tree) from different conception/projection soft-wares, this operation having as result the reduction of the conception time of the technological itinerary; The next step in the simulation conception is to implement the MUCN (CNC machine tools), initially evaluating the technological itinerary applied within the company from the viewpoint of time and costs necessary to process the bench, considering as representative the milling operation of the surfaces of the analyzed bench construction. This analysis helps to develop the optimization process using three-dimensional simulations on CNC machine tools with advanced cutting tools which can be imposed as comparison means, and for the selection of the optimization method. The conception and the simulation of the technological itinerary were realized using the CAM Esprit soft which exists in the endowment of the laboratory HTEC-TIMISOARA MUCN of the TCM Department. Development and evaluation of modeling-simulation results show the ANNALS of the ORADEA UNIVERSITY. Fascicle of Management and Technological Engineering, Volume X (XX), 2011, NR3