Low distortion interference fits for spindle motor assembly

Details Low distortion interference fits for spindle motor assembly Low distortion interference fits for spindle motor assembly

1995-03-02

1997-09-16

Hall, Carl E.

Metal working

Method of mechanical manufacture

Electrical device making

29525, H02K 1514

Patent

active

056667167

ABSTRACT:
For a precision spindle motor, an invention for facilitating interference fits of a thrust plate to spindle motor shaft and of a counter plate to journal. A method is provided for assembling a spindle motor using press fits of a thrust plate to a shaft having an undercut for providing a relief to reduce unwanted translation into a thrust gap. A method is also provided for assembling a spindle motor using a press fit of a counter plate to a journal. The counter plate having a chamfer for reducing unwanted translation of the counter plate into a thrust gap. Also, the apparatus employed for the above methods are described.

REFERENCES:
patent: 4739427 (1988-04-01), Kilmer et al.
patent: 4828467 (1989-05-01), Brown
patent: 4920812 (1990-05-01), Okamoto et al.
patent: 5313355 (1994-05-01), Kagen

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