Method and apparatus for testing a spindle in a disc drive

Details Method and apparatus for testing a spindle in a disc drive Method and apparatus for testing a spindle in a disc drive

1997-07-31

1999-01-05

Raevis, Robert

Measuring and testing

Testing of apparatus

33517, G01B 712

Patent

active

058566244

ABSTRACT:
A method and apparatus are used for testing a spindle which is used to support a disc pack for rotation in a disc drive. The test apparatus is removably coupled to the spindle. The current apparatus defines a test surface and has an outer periphery greater than an outer periphery of the spindle. A measurement device is placed proximate the test surface at a location radially displaced from the spindle. A distance between the test surface and the measuring device is measured with a measuring device during rotation of the spindle and the test apparatus.

REFERENCES:
patent: 3146528 (1964-09-01), Goulet et al.
patent: 4347667 (1982-09-01), Albertazzi

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