Shearing method for thin plate

Details Shearing method for thin plate Shearing method for thin plate

2006-09-19

2006-09-19

Crane, Daniel C. (Department: 3725)

Metal deforming

With cutting

By composite tool

C083S055000

Reexamination Certificate

active

07107808

ABSTRACT:
A shearing method for a thin plate including forming a protruded product part having a first sagging part when the thin plate with a thickness of not more than approximately 0.3 mm is performed with a half die cutting by pressing the half die cutting punch slightly larger than the half die cutting hole to form a shallow recessed part, fixing the product part by a fixing member, forming a second sagging part at an edge portion of the thin plate by pressurizing a scrap part by moving a pressure punch which is provided with a gap between the fixing member and the pressure punch and by being bent between the scrap part and the product part, and then separating the scrap part from the product part.

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patent: 4916798 (1990-04-01), Ballast
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patent: 2001-284116 (2001-10-01), None

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