主軸回転中心位置測定法の開発 : 第1報, 鋼球による方法

概要

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A precision steel ball mounted at the center of the spindle end and an electronic capacitance type transducer installed on the tool slide with three dimensional sliding stage. Relative displacement in axial direction between the ball and the transducer is detected during spindle rotation. Detecting method of the central position is based on the fact that undulation component synchronized with rotational speed of the spindle in the displacement signal comes into minimum value at the central position of rotation. The results of preliminary experiments may be summarized as follows: (1) The new method is capable to detect the central position better than ±0.1 μm measuring resolution. (2)In case of the spindle with hydrodynamic bearings, central position of the spindle rotation very differs in different rotational speeds.
社団法人日本機械学会の論文
1991-10-25