Evaluación de los parámetros de mecanizado en la fabricación de roscas en ejes de acero aisi 4140 usando equipos cnc bajo diferentes condiciones de lubricación: diseño y fabricación de ejes roscados cam – sin lubricación.

Abstract

In the execution of threading, the influence of three parameters is fundamental to define the execution and the result of a thread: The revolutions per minute, the depth of cut and the lubrication. In this work, for AISI 4140 steel shafts and using the tools and lathes of the LABINTECDIMP laboratory in the EPN, several combinations of these parameters from standards and manufacturers' recommendations have been taken for experimentation, to determine in which arrangement of variables a good thread finish and a good chip control are obtained in a machining environment without lubrication. For this purpose, thread pass verification with a commercial nut has been used and chip samples have been collected to relate the obtained samples to the corresponding parameters, where significant variations were observed depending on the combination. This has allowed the selection of the most suitable parameters for thread machining, as well as to determine possible alternatives to adjust productivity, threading quality and tool life in the process.