Simulation modeling of dynamic characteristics of machining in NI LabView software environment to improve processing technique of a rod component

Abstract

The paper considers a problem of providing required surface roughness of rod component during processing by means of forecasting dynamic characteristic of machine works with computer modeling taking into account transitional process. The role of the transitional process is performed by a modified structure in the surface layer of the blank created by preliminary laser effects; it is introduced into the computational model by means of a switch. To analyze the influence of preemptive structural change in the processed material onto the dynamic characteristic, a two-loop computational model describing delays in cutting force changes has been adopted. From the results of computational modeling in NI LabVIEW 2013 software environment, it has been discovered, that during the processing a stable suppression of arising self-vibration takes place when going through the modified structure zone. A positive effect in suppression of self-vibration is also supported with experimental research, thus providing a method of attaining preplanned surface roughness and allowing to remove the finishing operation from the current process to improve productivity and extend the modes of mechanical working. The article was prepared according to the State task (the project’s number № 9.10520.2018/11.12)