EP 3504014 A1 20190703 - METHOD FOR THE CHIPLESS PRODUCTION OF A ROTATIONALLY SYMMETRICAL BODY FROM A CIRCULAR SHEET METAL BLANK
Title (en)
METHOD FOR THE CHIPLESS PRODUCTION OF A ROTATIONALLY SYMMETRICAL BODY FROM A CIRCULAR SHEET METAL BLANK
Title (de)
VERFAHREN ZUR SPANLOSEN HERSTELLUNG EINES ROTATIONSSYMMETRISCHEN KOERPERS AUS EINER BLECHRONDE
Title (fr)
PROCÉDÉ POUR PRODUIRE UN CORPS À SYMÉTRIE DE ROTATION SANS ENLÈVEMENT DE COPEAUX À PARTIR D'UN FLAN DE TÔLE
Publication
Application
Priority
- DE 102016115791 A 20160825
- EP 2017071312 W 20170824
Abstract (en)
[origin: CA3033691A1] The invention relates to a method for the chipless production of a rotationally symmetrical body (17) from a circular sheet metal blank. The circular sheet metal blank (8) is shaped into a pot-shaped body (10) by pressing or pressure rolling about an inner mandrel (2), and a hub-shaped protrusion (16) which protrudes outwards from the base of the pot-shaped body (10) is molded on the body by pressing about a central projection (3). The aim of the invention is to improve the method, in particular simplify the production process and ensure a flawless concentricity of the shaped regions. This is achieved in that the circular sheet metal blank (8) is clamped only in the radial inner region of the blank in the axial direction between the inner mandrel (2) and at least one projection (3) during the entire shaping process.
IPC 8 full level
B21D 22/16 (2006.01)
CPC (source: EP KR US)
B21D 22/16 (2013.01 - EP KR US); B21D 51/04 (2013.01 - US)
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
DE 102016115791 A1 20180301; CA 3033691 A1 20180301; CA 3033691 C 20240611; CN 109641255 A 20190416; CN 109641255 B 20210914; EP 3504014 A1 20190703; KR 102343153 B1 20211223; KR 20190039738 A 20190415; MX 2019002150 A 20190918; US 11325174 B2 20220510; US 2021276066 A1 20210909; WO 2018037070 A1 20180301
DOCDB simple family (application)
DE 102016115791 A 20160825; CA 3033691 A 20170824; CN 201780051929 A 20170824; EP 17768004 A 20170824; EP 2017071312 W 20170824; KR 20197006217 A 20170824; MX 2019002150 A 20170824; US 201716326423 A 20170824