Method and apparatus for extruding a burred edge of a hole in a

Details Method and apparatus for extruding a burred edge of a hole in a Method and apparatus for extruding a burred edge of a hole in a

1977-12-12

1980-07-22

Gilden, Leon

Metal deforming

By use of closed-die and coacting work-forcer

Forcing work into or within closed die; e.g., forging

72370, B21D 2200

Patent

active

042133238

ABSTRACT:
Method and apparatus for extruding burr holes in a metal sheet, in which a punch with a conical end portion and adjoining cylindrical portion of a diameter greater than the inner burr diameter is passed through the burr. The conical end portion has a half apex angle between 10.degree. and 20.degree., and the axial length of the cylindrical portion and the coefficient of friction between the cylindrical portion and the burr wall are selected according to a specified relationship.

REFERENCES:
patent: 3812704 (1974-05-01), Kowal
patent: 4055067 (1977-10-01), Kozima

Affiliated with

Also associated with

Rating

Method and apparatus for extruding a burred edge of a hole in a does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method and apparatus for extruding a burred edge of a hole in a , we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for extruding a burred edge of a hole in a will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2173744