Author(s)

G.T. Smith

Abstract

In order to improve both the geometric and dimensional errors resulting from the drilling process, boring is often utilised by which a hole's inaccuracies are in the main, corrected. The boring bar due to its extensive and necessary overhang, often induces vibration on the hole being bored this means that the machined surface texture and roundness harmonic behaviour is compromised. Complex boring bars are available to minimise these errors in the bored hole; being of either an "active" or "dynamic" type, coupled to appropriate tool point control systems although such "damped" boring bars are expensive to purchase. This paper discusses an alternative machining strategy being based upon the so called "anti-vibration" and "compound" boring bars for smaller length-to-diameter bored hole ratios. A series of machini

Keywords