Zeeko 1 metre polishing system

Firstly, the paper introduces some interesting comparisons between CNC polishing machines and precision grinding and turning machines. The distinction between 'polishing' and 'control of form' is made, and the inherent non-determinism of control-of-form according to traditional craft-practice is described. This leads to an outline of why automation is important, and how improved determinism can be achieved. The Zeeko Classic and Zeeko Jet small-tool CNC polishing processes are then introduced. We describe the mechanical and control approach behind the first of Zeeko's novel CNC polishing machines that can accommodate a work-piece 1 metre in diameter. We discuss issues of required positioning-accuracy, maximum acceleration and velocity, and how these affect the polishing process and drive the mechanical design. Finally, ergonomic issues are discussed, together with other practical aspects concerning the interaction of the polishing process with measurement.