Shutter manufacturing method

Details Shutter manufacturing method Shutter manufacturing method

1994-05-02

1996-04-30

Crane, Daniel C.

Metal deforming

With cutting

By shearing tool-couple

72339, 72404, B21D 2806

Patent

active

055114059

ABSTRACT:
A method of manufacturing shutters for computer disks, optical disks and the like, includes forming a rib on a connecting member formed between adjoining shutter blanks during bending and cutting processing. The rib is concave in cross-section and increases a strength of the connecting portion such that stress applied during bending processing, and movement of the rolled steel which is used for manufacturing, does not deform the connecting portion. According to this, processing speed for manufacturing may be increased and further, thinner material may be utilized in forming the shutters. Also, at a later stage of processing, the convex ribs may again be flattened.

REFERENCES:
patent: 3765217 (1973-10-01), Ikeda
patent: 4320647 (1982-03-01), Kummeling
patent: 5021913 (1991-06-01), Overland
patent: 5247825 (1993-09-01), Erickson

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