Fundamentals of Machining Processes, 3rd Edition

8

Machining by Abrasion

8.1   INTRODUCTION

Machining by cutting (C) utilizes single- or multipoint tools with a definite number of cutting points and geometric features. Abrasive processes are carried out using the mechanical abrasion action (MA). Accordingly, abrasive tools containing an indefinite number and shape of cutting points remove the machining allowance in the form of minute chips that are nearly invisible to the naked eye and partially oxidized (Figure 8.1). Abrasive processes have the following features (Kaczmarek, 1976):

1. Due to the varying shape of abrasives situated in a random position, only a portion carries out the abrasion machining action, while another part plastically scratches the work surface. The remaining part rubs ...