APPARATUS FOR STRETCHING SHEET BLANKS

plastic metal working, namely, sheet forming. SUBSTANCE: apparatus for stretching sheet blanks includes holders for rigidly holding mutually opposite edges of blank. Holders have upper and lower parts with restricted ribs. Holders may perform simultaneous different-direction motion after holding bla...

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Bibliographische Detailangaben
1. Verfasser:	FEOFANOVA A.E
Format:	Patent
Sprache:	eng ; rus
Schlagworte:	MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVINGMATERIAL PERFORMING OPERATIONS PUNCHING METAL TRANSPORTING WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS ORPROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL
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Beschreibung
Zusammenfassung:	plastic metal working, namely, sheet forming. SUBSTANCE: apparatus for stretching sheet blanks includes holders for rigidly holding mutually opposite edges of blank. Holders have upper and lower parts with restricted ribs. Holders may perform simultaneous different-direction motion after holding blank, namely, one holder may descend and other opposite holder may raise at stretching blank in order to provide necessary ultimate strength of material for its subsequent shaping. EFFECT: material economy, increased degree of material shaping, necessary strength and rigidity of parts, simplified design of die set. 2 dwg