RESEARCH, DEVELOPMENT AND DESIGN OF NEW ORIGINAL PROFILING LINE НАУЧНЫЕ, ТЕХНИЧЕСКИЕ И ЭКОНОМИЧЕСКИЕ ПРОБЛЕМЫ SCIENTIFIC, TECHNICAL AND ECONOMICAL PROBLEMS Milenko B. Jevtić, Dragomir S. Ilić, Vladimir D. Vukićević RESEARCH, DEVELOPMENT AND DESIGN OF NEW ORIGINAL PROFILING LINE The paper outlines a method and procedures for regulation and control of winder rollers on a steel strip profiling and calibration semiautomatic line, developed and used to meet the needs of Serbian industry. <...> Direct current motors and thyristor regulators provide possibilities to change continually the winding speed depend ing upon the strip tension force, as well as the auxiliary motion to wind all strip sizes to the reel, regardless of the strip thickness and section width. <...> A four stage working process is employed in the line, whereas the kinematics control and synchronization is carried out automatically, thus enabling the whole system to work adaptively. <...> Optimization and set ting the optimum work parameters are made automatically irrespective of inside or outside interferences. <...> The paper represents an original scientific research analysis, based on which the authors have developped and de signed complete technical documentation for the steel strip profiling and calibration line. <...> This documentation was the foundation for manufacturing, assembling and comissioning the described line. <...> This line operates in a semiautomatic mode with adaptive control. <...> In developping and designing this line the aim was to obtain the desired calibrated profile of the steel strip according to the defined tool geometry, which is wound automatically on the last module. <...> The realized technical solution for this line is original and unique. <...> By replacing the working rollers with another profile geometry, we obtain a wide spectrum of different profiled and calibrated strip materials of very high quality steel. <...> Thus profiled and calibrated steel strips are used as semifinished products for manufacturing various products in industry. <...> INTRODUCTION To obtain calibrated and profiled strips through material deformation by rolling, accompanied by higher reduction of strip cross section, is not possible by a single strip profiling. <...> Thus, the strip profiling in a few stages is undertaken, depending on the entire degree of material deformation. <...> Total section reduc tion is then distributed to several profiling <...>