Method and means for processing metal sheets
OwnerArnold Hurvitzinventor
Life of this patent
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Abstract
Method of processing metal sheets which includes the steps of applying tensile stress to an intermediate region of a sheet of metal by engaging the sheet on opposite sides of the region, deforming the intermediate region of the sheet and removing the tensile stress applied to the sheet. The intermediate region of the sheet may be deformed by embossing and the tensile stress can be applied to the intermediate region of the sheet by forming a bead on opposite sides of the region. The means for processing metal sheets comprises first means including die members for forming beads on opposite sides of a metal sheet, and second means for deforming the intermediate region of the sheet while the stress is applied thereto by the first means.
Claims26
A method of processing flat metal sheets which may have apparent or latent defects for providing embossed sheets with flat regions which includes the steps of
- applying tensile stress to an intermediate region of a substantially flat sheet of metal by engaging the sheet on opposite sides of said region while maintaining the sheet flat and its ends fixed with respect to each other,
- deforming a portion of the intermediate region of said sheet while the remaining undeformed portion of the sheet is maintained flat and the tensile stress is applied, and
- removing the tensile stress applied to said sheet to provide a metal sheet with intermediate deformed and undeformed flat portions with the undeformed portion being substantially in the same plane.
A sheet metal product made by the steps of
- applying tensile stress to an intermediate region of a substantially flat sheet of metal by engaging the sheet on opposite sides of said region while maintaining the sheet flat and its ends fixed with respect to each other,
- deforming a portion of the intermediate region of said sheet while the remaining undeformed portion of the sheet is maintained flat and the tensile stress is applied, and
- removing the tensile stress applied to said sheet to provide a metal sheet with intermediate deformed and undeformed flat protions with the undeformed portion being substantially in the same plane.
A means for processing substantially flat metal sheets which may have apparent or latent defects comprising first means for engaging a substantially flat metal sheet on opposite sides and applying tensile stress to its intermediate region while maintaining the sheet flat and its ends fixed with respect to each other, second means for deforming a portion of the intermediate region of said sheet while the remaining undeformed portion of the sheet is maintained flat and said stress is applied thereto by said first means, and third means for supporting said first and second means.
A means for processing metal sheets comprising first means for engaging a metal sheet on opposite sides and applying tensile stress to its intermediate region, second means for deforming the intermediate region of said sheet while said stress is applied thereto by said first means, and third means for supporting said first and second means, the first and second means respectively including first and second sets of engagable and disengagable corresponding male and female die members, the first set of die members forming a bead in opposite sides of the metal sheet to apply tensile stress to the intermediate region of the sheet, and the second set of dies embossing the intermediate region of the sheet, the first set of die members having removable inserts for changing the locations of the beads formed in said sheet, the inserts of the female die members having a plurality of parallel grooves, and the inserts of the male die members being replaceable by selected inserts each providing an elongated protuberance for being received in a selected one of the grooves of its corresponding female die member.
Dependencies are inferred from the claim text.