Authors: R S Lee Y H Lin
Publish Date: 2012/01/25
Volume: 62, Issue: 9-12, Pages: 1261-1272
Abstract
Since a fiveaxis machine tool has two more rotary axes and two more degrees of freedom than a threeaxis machine tool it can manufacture a complex surface more efficiently However there are more error terms due to the extra axes Error sources for machine tools include structural error dynamic error and static error The static error which includes thermal and geometric errors is the main source of machining inaccuracy in machine tools Although a large number of studies have been made on geometric errors the influence of individual error term on volumetric error is seldom discussed This paper analyzes assembly error that belongs to the category of static error and the analytic method can be applied to general orthogonal configurations By adopting the machine tool formshaping function the effect of assembly errors on volumetric errors has been investigated And the error terms that cannot be compensated by driving single control axis have been recognized and explored for general orthogonal configurations
Keywords: