Abstract
This paper presents the research made on the modelling of forces when processing profiles corresponding to trapezoidal thread through cold deformation with rack tools. For proper orientation of the experimental research a theoretical study was made on the process and the parameters which influence the force were determined. Three possible models were established for the deformation force and an experience plan to allow determining the established models was performed. A stand with all the adequate means to measure process parameters was designed and built. The data acquired, corresponding to the experience plan established, were processed using LINEST application of EXCEL software. Therefore, there were determined the machinability functions which allow calculating the deformation forces when processing a trapezoidal profile on cylindrical pieces. The way in which process variables influence the size of the deformation force was analysed.
Keywords: Cold Forming, Rolling Process, Rolling Flat Wedges, Forming Force, Machinability Functions