
221
8
Machining by Abrasion
8.1 Introduction
Machining by cutting (C) utilizes single- or multipoint tools with a denite
number of cutting points and geometric features. Abrasive processes are
carried out using the abrasion action (MA). Accordingly, abrasive tools
containing an indenite number and shape of cutting points remove
the machining allowance in the form of minute chips that are nearly invis-
ible 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 posi-
tion, only a portion carries out the abrasion machin