Metal forming and drawing process and apparatus

Details Metal forming and drawing process and apparatus Metal forming and drawing process and apparatus

1991-07-29

1992-09-22

Larson, Lowell A.

Metal deforming

By use of closed-die and coacting work-forcer

Cup or shell drawing

72347, B21D 2226

Patent

active

051486962

ABSTRACT:
A process for manufacturing an integral metal furniture top having formed and drawn sides and connecting drawn corners in a single step. Each connecting corner has a radius of approximately 3/32 inch. A segmented die is employed having surface treated steel corner pieces with working faces at an approximately 90.degree. angle and steel side pieces having a compound working face including a metal forming face and a trailing coining projection for substantially removing the shockline produced during the forming operation. A metal blank has metal cut out of each corner that would interfere with the drawing process. The metal blank is placed on a mandrel and surrounding pressure plate. The segmented die then closes on the metal blank forming the sides and drawing the corners of the furniture top in a single operation. The sheet metal used to form the top is approximately 0.028 to 0.031 inch thick and to die/mandrel clearance is approximately 0.032 to 0.033 inch. The furniture top and segmented die are also disclosed.

REFERENCES:
patent: 1944527 (1934-01-01), Pfaendler
patent: 3314275 (1967-04-01), Mullen
patent: 4833903 (1989-05-01), de Smet

Affiliated with

Also associated with

Rating

Metal forming and drawing process and apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Metal forming and drawing process and apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Metal forming and drawing process and apparatus will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1060679