Measuring Device for Motion Accuracy of NC Machine Tools by Rotary Encoders and Link Mechanism (RELM) –2nd report-

The influence of adsorption power of a magnetic tool cup to the measurement results

Abstract

We have been developing the measuring device for motion accuracy of NC machine tools using rotary encoders and link mechanisms. In previous report, we have shown that the difference of the magnitude of counter weight, in other words, the difference of the sliding condition between a steel ball and a magnetic tool cup affects the measurement repeatability. However, we must consider the difference of small deformation at links by the difference of the counter weights. We have made new magnetic tool cups which have different adsorption power. In this report, the influence of the magnetic tool cups to the experimental results are shown.