Development of High Speed Spindle for Machine Tool with Magnetic Bearings

Title & Authors
Development of High Speed Spindle for Machine Tool with Magnetic Bearings
Park, Cheol Hoon; Ham, Sang Yong; Hong, Doo Euy; Kim, Jun Kyu;

Abstract
Most of spindles for machine tool are supported by ball bearings, and there are problems in the limits of high speed and high power as well as the cumbersome maintenance due to the short life time. In order to overcome these problems of the conventional spindles, the high speed spindle with magnetic bearings is developed in this study. Magnetic bearings for 60 000 r/min class high-speed spindle are designed, and high speed spindle with magnetic bearings are fabricated. Based on the running test up to 60 000 r/min, it is verified that the spindle is stably supported by the magnetic bearings, and the magnitude of the unbalance response at 60 000 r/min is less than $\small{3{\mu}m}$.
Keywords
Machine Tool Spindle;High Speed Spindle;Magnetic Bearings;
Language
Korean
Cited by
References
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