Author(s)

W. Schroder

Abstract

The productivity of a machine tool corresponds to the quality and the quantity of the workpieces, which it can produce in a constant time interval. The quality of a workpiece is measured in terms of surface roughness and geometric accuracy. Increasing the productivity of a machine tool generally requires improving the dynamic behaviour of the feed axes. Especially machine tools with a parallel kinematic structure seem to have a great deal of static and dynamic advantages in comparison to conventional machine tools and they are also interesting from an economical point of view. To produce workpieces with small geometric devia- tions on a parallel machine tool, the geometrical properties of the hexapod must be well known, because a parallel kinematic structure requires a great deal of non-linear kinematic transformations betwee

Keywords