EP 0204290 B1 19891102 - A SHEETMETAL ROLLING MACHINE FOR MAKING A CONICAL SHELL FROM A SHEETMETAL BLANK
Title (en)
A SHEETMETAL ROLLING MACHINE FOR MAKING A CONICAL SHELL FROM A SHEETMETAL BLANK
Publication
Application
Priority
CH 235685 A 19850604
Abstract (en)
[origin: US4735076A] A method of producing a conical shell from a metal sheet cut to size. The method includes feeding the sheet in a nip between two transport rollers an incremental distance between respective positions in which nonparallel straight line generatrices on the sheet defining the shell to be produced are in an aligned with the nip, translating a bending roller into engagement with the sheet to incrementally bend the sheet in a direction perpendicular to the generatrix between the nip, then retracting the bending roller away from the sheet, and successively repeating the above steps until the sheet is in the shape of the conical shell to be produced.
IPC 1-7
IPC 8 full level
B21D 5/14 (2006.01)
CPC (source: EP US)
B21D 5/14 (2013.01 - EP US)
Designated contracting state (EPC)
AT DE FR GB IT SE
DOCDB simple family (publication)
EP 0204290 A2 19861210; EP 0204290 A3 19870527; EP 0204290 B1 19891102; EP 0204290 B2 19930915; AT E47676 T1 19891115; DE 3666673 D1 19891207; US 4735076 A 19880405
DOCDB simple family (application)
EP 86107426 A 19860602; AT 86107426 T 19860602; DE 3666673 T 19860602; US 87309486 A 19860604