Method and apparatus for manufacturing slip stopper

Details Method and apparatus for manufacturing slip stopper Method and apparatus for manufacturing slip stopper

2006-04-04

2006-04-04

Crane, Daniel C. (Department: 3725)

Metal deforming

With cutting

By composite tool

C072S379200

Reexamination Certificate

active

07021109

ABSTRACT:
An easy manufacturing method of a slip stopper, and apparatus therefor, that has a great slip stopping effect and can be used for a location where a problem occurs if a though hole is opened therein. After a protruding portion is formed on a steel plate, by using a first punching die unit, so as to protrude from the upper surface in a plate thickness direction, a concave portion and drain channels are formed in the protruding portion by shear planes that extend substantially perpendicular to the steel plate upper surface and have been half-blanked so as not to open a through hole in the steel plate by using a second punching die unit.

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