Connection Between the Dynamic Character of the Cutting Force and Machined Surface in Abrasive Waterjet Machining

Abstract

This paper presents the results of research on the effect of traverse speed on cutting forces and machined surface in abrasive water jet machining. The results indicated that there is a significant connection between the dynamic character of the cutting force in abrasive waterjet machining, namely, peaks in the cutting force signal, with the appearance of irregularities and uncut parts in the machined surface. Also, the research showed that the increase of the traverse speed produces an increase in the mean value of the static component of the cutting force. In experiments, the vertical component of the cutting force has been measured for an Aluminium AlMg3 12 mm thick rod cut at traverse speeds from 900 mm/min to 1100 mm/min. Cutting with higher traverse speeds yields more irregularities, which are connected with the appearance of peaks in the measured cutting force.