On the Modeling of Abrasive Waterjet Turning

Turning with abrasive waterjets has been demonstrated as a viable process for difficult-to-machine materials. The process uses abrasive waterjet as a cutting tool that deflects from its trajectory upon interaction with the workpiece. Therefore, the final workpiece diameter, in addition to depth of cut, is a function of abrasive waterjet, workpiece, and turning parameters. A two step approach to the modeling is presented. In the first step model is developed for the slotting operation, (i.e., zero traverse speed) that utilizes Finnie’s model of particle erosion. In the second step, a simplified approach to model the volume removal rate, and hence the final workpiece diameter, is developed that is based on the theories of erosion by Finnie and Bitter. The model qualitatively explains the experimental data observed in AWJT.